Method for determining the circulating blood volume by introducing a known quantity of foreign substance into the blood and determining its concentration some minutes later when thorough mixing has occurred. From these two values the blood volume can be calculated by dividing the quantity of injected material by its concentration in the blood at the time of uniform mixing. Generally expressed as cubic centimeters or liters per kilogram of body weight.
Coloring matter from the insect Coccus cacti L. It is used in foods, pharmaceuticals, toiletries, etc., as a dye, and also has use as a microscopic stain and biological marker.
Volume of circulating BLOOD. It is the sum of the PLASMA VOLUME and ERYTHROCYTE VOLUME.
The volume of the HEART, usually relating to the volume of BLOOD contained within it at various periods of the cardiac cycle. The amount of blood ejected from a ventricle at each beat is STROKE VOLUME.
Volume of PLASMA in the circulation. It is usually measured by INDICATOR DILUTION TECHNIQUES.
An abnormally low volume of blood circulating through the body. It may result in hypovolemic shock (see SHOCK).
Volume of circulating ERYTHROCYTES . It is usually measured by RADIOISOTOPE DILUTION TECHNIQUE.
The circulation of blood through the BLOOD VESSELS of the BRAIN.
Passage of light through body tissues or cavities for examination of internal structures.
The oxygen-carrying proteins of ERYTHROCYTES. They are found in all vertebrates and some invertebrates. The number of globin subunits in the hemoglobin quaternary structure differs between species. Structures range from monomeric to a variety of multimeric arrangements.
That portion of the electromagnetic spectrum in the visible, ultraviolet, and infrared range.
Photosensitive proteins in the membranes of PHOTORECEPTOR CELLS such as the rods and the cones. Opsins have varied light absorption properties and are members of the G-PROTEIN-COUPLED RECEPTORS family. Their ligands are VITAMIN A-based chromophores.
The volume of BLOOD passing through the HEART per unit of time. It is usually expressed as liters (volume) per minute so as not to be confused with STROKE VOLUME (volume per beat).
A bibliographic database that includes MEDLINE as its primary subset. It is produced by the National Center for Biotechnology Information (NCBI), part of the NATIONAL LIBRARY OF MEDICINE. PubMed, which is searchable through NLM's Web site, also includes access to additional citations to selected life sciences journals not in MEDLINE, and links to other resources such as the full-text of articles at participating publishers' Web sites, NCBI's molecular biology databases, and PubMed Central.
A publication issued at stated, more or less regular, intervals.
"The business or profession of the commercial production and issuance of literature" (Webster's 3d). It includes the publisher, publication processes, editing and editors. Production may be by conventional printing methods or by electronic publishing.
The premier bibliographic database of the NATIONAL LIBRARY OF MEDICINE. MEDLINE® (MEDLARS Online) is the primary subset of PUBMED and can be searched on NLM's Web site in PubMed or the NLM Gateway. MEDLINE references are indexed with MEDICAL SUBJECT HEADINGS (MeSH).
Publications in any medium issued in successive parts bearing numerical or chronological designations and intended to be continued indefinitely. (ALA Glossary of Library and Information Science, 1983, p203)
All of the divisions of the natural sciences dealing with the various aspects of the phenomena of life and vital processes. The concept includes anatomy and physiology, biochemistry and biophysics, and the biology of animals, plants, and microorganisms. It should be differentiated from BIOLOGY, one of its subdivisions, concerned specifically with the origin and life processes of living organisms.
Procedures in which placement of CARDIAC CATHETERS is performed for therapeutic or diagnostic procedures.
The study of the heart, its physiology, and its functions.
The production of an image obtained by cameras that detect the radioactive emissions of an injected radionuclide as it has distributed differentially throughout tissues in the body. The image obtained from a moving detector is called a scan, while the image obtained from a stationary camera device is called a scintiphotograph.
Developmental abnormalities involving structures of the heart. These defects are present at birth but may be discovered later in life.
A medical specialty concerned with maintaining health and providing medical care to children from birth to adolescence.
Heart sounds caused by vibrations resulting from the flow of blood through the heart. Heart murmurs can be examined by HEART AUSCULTATION, and analyzed by their intensity (6 grades), duration, timing (systolic, diastolic, or continuous), location, transmission, and quality (musical, vibratory, blowing, etc).
The biological science concerned with similarities or differences in the life-supporting functions and processes of different species.
The movement and the forces involved in the movement of the blood through the CARDIOVASCULAR SYSTEM.
Expenditure of energy during PHYSICAL ACTIVITY. Intensity of exertion may be measured by rate of OXYGEN CONSUMPTION; HEAT produced, or HEART RATE. Perceived exertion, a psychological measure of exertion, is included.
Abnormally low BLOOD PRESSURE that can result in inadequate blood flow to the brain and other vital organs. Common symptom is DIZZINESS but greater negative impacts on the body occur when there is prolonged depravation of oxygen and nutrients.
The time span between the beginning of physical activity by an individual and the termination because of exhaustion.
Physical activity which is usually regular and done with the intention of improving or maintaining PHYSICAL FITNESS or HEALTH. Contrast with PHYSICAL EXERTION which is concerned largely with the physiologic and metabolic response to energy expenditure.
A genus of parasitic nematode worms which infest the duodenum and stomach of domestic and wild herbivores, which ingest it with the grasses (POACEAE) they eat. Infestation of man is accidental.
Infection with nematodes of the genus HAEMONCHUS, characterized by digestive abnormalities and anemia similar to that from hookworm infestation.
A medical specialty concerned with the hypersensitivity of the individual to foreign substances and protection from the resultant infection or disorder.
Individual's rights to obtain and use information collected or generated by others.
A quantitative measure of the frequency on average with which articles in a journal have been cited in a given period of time.
Disorders caused by abnormal or absent immunologic mechanisms, whether humoral, cell-mediated, or both.
Therapy for the insufficient cleansing of the BLOOD by the kidneys based on dialysis and including hemodialysis, PERITONEAL DIALYSIS, and HEMODIAFILTRATION.
The end-stage of CHRONIC RENAL INSUFFICIENCY. It is characterized by the severe irreversible kidney damage (as measured by the level of PROTEINURIA) and the reduction in GLOMERULAR FILTRATION RATE to less than 15 ml per min (Kidney Foundation: Kidney Disease Outcome Quality Initiative, 2002). These patients generally require HEMODIALYSIS or KIDNEY TRANSPLANTATION.
Solutions prepared for hemodialysis. The composition of the pre-dialysis solution may be varied in order to determine the effect of solvated metabolites on anoxia, malnutrition, acid-base balance, etc. Of principal interest are the effect of the choice of buffers (e.g., acetate or carbonate), the addition of cations (Na+, K+, Ca2+), and addition of carbohydrates (glucose).
Solutions prepared for exchange across a semipermeable membrane of solutes below a molecular size determined by the cutoff threshold of the membrane material.
A drive stemming from a physiological need for WATER.
The combination of hemodialysis and hemofiltration either simultaneously or sequentially. Convective transport (hemofiltration) may be better for removal of larger molecular weight substances and diffusive transport (hemodialysis) for smaller molecular weight solutes.
A member of the alkali group of metals. It has the atomic symbol Na, atomic number 11, and atomic weight 23.

Measurement of cerebral blood volume using near-infrared spectroscopy and indocyanine green elimination. (1/161)

Methods for measuring cerebral blood volume (CBV) have traditionally used radioisotopes. More recently, near-infrared spectroscopy (NIRS) has been used to measure CBV by using a technique involving O(2) desaturation of cerebral tissue, where the observed change in the concentration of oxygenated hemoglobin is a marker of the volume of blood contained within the brain. A new integration method employing NIRS is described by using indocyanine green (ICG) as the intravascular marker. After bolus injection, concentration-time integrals of cerebral tissue ICG concentration ([ICG](tissue)) measured by NIRS are compared with corresponding integrals of the cerebral blood ICG concentrations ([ICG](blood)) estimated by high-performance liquid chromatography of peripheral blood samples with allowance for cerebral-to-large-vessel hematocrit ratio. It is shown that CBV = integral [ICG]tissue/[ICG]blood. Measurements in 10 adult volunteers gave a mean value of 1.1 +/- 0.39 (SD) ml/100 g illuminated tissue. This result, although lower than previous NIRS estimations, is consistent with the long extracerebral path of light in the adult head. Scaling of results is required to take into account this component of the optical pathlength.  (+info)

Measurement of blood volume in surgical and intensive care practice. (2/161)

Clinical studies to assess the benefits of blood transfusion or haemodilution in critical illness should take account of measured CBV before, during and after intervention. As mentioned above, surrogate measures of CBV are inadequate and studies based on these must be considered incomplete, because they cannot distinguish between effects of changes in haemoglobin concentration and changes in blood volume. The choice of a suitable technique for measuring CBV depends on the facilities available locally. In general, methods based on labelled red cells are more reliable but are technically demanding and time consuming. Those based on albumin are likely to yield false high values and this is particularly true in all patients with impaired capillary integrity. The most promising plasma marker is hydroxyethyl starch which may be particularly useful when the polysaccharide is labelled with a fluorescent dye. Attaching fluorescein to hydroxyethyl starch is not difficult and, should demand be sufficient, it may well become available from manufacturers who are already capable of providing other fluorescent polysaccharides. The clinical benefits of such a development would include more rational schedules of i.v. fluid and blood transfusion management in surgical and intensive care patients.  (+info)

The female reproductive cycle is an important variable in the response to trauma-hemorrhage. (3/161)

Although immune functions in proestrus females are maintained after hemorrhage as opposed to decreased responses in males, it remains unknown whether such a sexual dimorphism also exists with regard to cardiovascular and hepatocellular functions under those conditions. To study this, male and female (estrus and proestrus) rats underwent a 5-cm midline laparotomy and were bled to and maintained at a mean blood pressure of 40 mmHg until 40% of the maximal bleed-out volume was returned in the form of Ringer lactate (RL). Rats were then resuscitated with four times the shed blood volume with RL. At 24 h thereafter, cardiac index; heart performance; hepatocellular function; and plasma estradiol, testosterone, and prolactin levels were measured. Cardiovascular and hepatocellular functions were depressed in males and estrus females (P < 0.05) but were not depressed in proestrus females after resuscitation. Plasma estradiol and prolactin levels were highest in proestrus females (P < 0.05), whereas males had high testosterone and the lowest estradiol levels (P < 0.05). Thus the female reproductive cycle is an important variable in the response to hemorrhage. Because low testosterone and high estradiol and prolactin levels appear to be beneficial for organ functions after trauma-hemorrhage, antagonism of testosterone receptors and/or increases in estradiol and prolactin levels in males and estrus females, respectively, may be novel approaches for improving organ functions under such conditions.  (+info)

Local cerebral blood volume determined by three-dimensional reconstruction of radionuclide scan data. (4/161)

We developed a method to determine in man absolute values of local cerebral blood volume (LCBV) localized throughout the brain in three dimensions and presented in a cross-sectional picture format. Previously, absolute values of LCBV have been determined in vivo by stimulated X-ray fluorescence, but these determinations have been limited to one point in the brain at a time. All other previous estimates of LCBV by external emission counting have been contaminated by the significant contribution of blood in the overlying scalp and cranium. In our method, a transverse section scan is made after the injection of -99m-Tc-labeled red blood cells into a peripheral vein. Data processing then gives a point-to-point estimate of absolute radionuclide concentration analogous to an autoradiograph. After the concentration of blood activity is determined, counting data are converted to a two-dimensional map of LCBV representing a cross section at a known level of the brain. In a series of five baboons, the following equation was obtained for the regression plane that relates LCBV in the center of the brain to arterial carbon dioxide tension (P-ALPHA-CO2) and mean arterial blood pressure (MABP): LCBV equals 2.88 + 0.049P-ALPHA-CO2 MINUS 0.013MABP. In patients, LCBE values ranged from 2 to 4 ml/100 g depending on location; higher values corresponded to regions of cerebral cortex. Differences in blood volumes of focal brain lesions were also quantified.  (+info)

Regulation of extracellular volume and interstitial fluid pressure in rat bone marrow. (5/161)

The volume and fluid pressure characteristics of the intact bone marrow is incompletely understood. We used microspheres and lipoproteins for measurements of intravascular volume (IVV) and EDTA for interstitial fluid volume (IFV) within the rat bone marrow. Interstitial fluid pressure (IFP) was determined with micropipettes connected to a servo-controlled counter-pressure system. Both the microspheres and the lipoproteins yielded estimates of IVV of approximately 1 ml/100 g. After a brief reactive hyperemia, IVV increased to 2.5 ml/100 g, whereas IFV decreased with approximately 1.5 ml/100 g, so that total extracellular volume did not change. Baseline bone marrow IFP was 9.7 mmHg. The hyperemia led to a transient twofold increase in IFP, whereas a marked blood loss decreased IFP by almost one-half. These novel data suggest that extracellular volume and IFP within the bone marrow can be measured with tracer methods and the micropuncture technique. The responses of IVV, IFV, and IFP during changes in blood flow to the bone marrow suggest a tight regulation and are thus compatible with those for a low-compliant tissue.  (+info)

Clinical evaluation of circulating blood volume in critically ill patients--contribution of a clinical scoring system. (6/161)

The circulating blood volume (CBV) of critically ill patients may be difficult to estimate on the basis of history and physical examination. The aim of this study was to evaluate the ability of seven clinical signs and central venous pressure (CVP) to predict CBV in critically ill patients; CBV was evaluated with the [125I]human serum albumin technique. A scoring system was constructed using a combination of independence Bayes method and logistic regression. Sixty-eight patients constituted a 'model development' sample and 30 patients a validation sample. Thirty-six patients (53%) in the model development sample were found to have a low CBV (measured CBV at least 10% lower than the predicted mean normal CBV). Neither the haemodynamic variables monitored in ICU, nor the spot urinary sodium concentrations were different between patients with and without a low CBV. Individually, none of the clinical signs tested have a good positive or negative predictive value. For CVP, only extreme values seem to have clinical significance. To construct the score, the signs tested were ranked according to their discriminating efficacy. The probability of a low CBV was obtained by adding the weights of each sign tested and converting the score obtained into a probability. On a validation sample of 30 patients, the predictions are reliable as assessed by Z statistics ranging between -2 and +2. Our results suggest that: (1) individually, no clinical sign presented a clinical useful predictive value; and (2) a clinical scoring system may be helpful for the evaluation of CBV in critically ill patients.  (+info)

Mechanisms of edema formation after intracerebral hemorrhage: effects of extravasated red blood cells on blood flow and blood-brain barrier integrity. (7/161)

BACKGROUND AND PURPOSE: Red blood cell (RBC) lysis contributes to brain edema formation after intracerebral hemorrhage (ICH), and RBC hemolysate (oxyhemoglobin) has been implicated to be a spasminogen in subarachnoid hemorrhage. Whether cerebral ischemia contributes to brain edema formation after ICH remains unclear, however. The aims of this study were to test whether extravasation of RBCs induces cerebral ischemia and/or blood-brain barrier disruption in a rat ICH model characterized by perihematomal brain edema. METHODS: In this study, 87 pentobarbital-anesthetized Sprague-Dawley rats were used. In each animal, saline, packed RBCs, or lysed RBCs were injected into the right caudate nucleus. Sham injections served as controls. Regional cerebral blood flow, brain water and ion contents, blood-brain barrier integrity, and plasma volume were measured. RESULTS: Intraparenchymal infusion of lysed RBCs caused severe brain edema by the first day but did not induce ischemic cerebral blood flows. In contrast, blood-brain barrier permeability increased during the first day after infusion of lysed RBCs (a 3-fold increase) and 3 days after infusion of packed RBCs (a 4-fold increase). CONCLUSIONS: These results suggest that ischemia is not present at 24 or 72 hours after hematoma induction by injection of intact or lysed RBCs. RBC constituents that appear after delayed lysis, however, increase blood-brain barrier permeability, which contributes to edema formation.  (+info)

Absence of beneficial effect of acute normovolemic hemodilution combined with aprotinin on allogeneic blood transfusion requirements in cardiac surgery. (8/161)

BACKGROUND: The efficacy of acute normovolemic hemodilution (ANH) in decreasing allogeneic blood requirements remains controversial during cardiac surgery. METHODS: In a prospective, randomized study, 80 adult cardiac surgical patients with normal cardiac function and no high risk of ischemic complications were subjected either to ANH, from a mean hematocrit of 43% to 28%, or to a control group. Aprotinin and intraoperative blood cell salvage were used in both groups. Blood (autologous or allogeneic) was transfused when the hematocrit was less than 17% during cardiopulmonary bypass, less than 25% after cardiopulmonary bypass, or whenever clinically indicated. RESULTS: The amount of whole blood collected during ANH ranged from 10 to 40% of the patients' estimated blood volume. Intraoperative and postoperative blood losses were not different between control and ANH patients (total blood loss, control: 1,411 +/- 570 ml, n = 41; ANH: 1,326 +/- 509 ml, n = 36). Allogeneic blood was given in 29% of control patients (median, 2; range, 1-3 units of packed erythrocytes) and in 33% of ANH patients (median, 2; range, 1-5 units of packed erythrocytes; P = 0.219). Preoperative and postoperative platelet count, prothrombin time, and partial thromboplastin time were similar between groups. Perioperative morbidity and mortality were not different in both groups, and similar hematocrit values were observed at hospital discharge (33.7 +/- 3.9% in the control group and 32.6 +/- 3.7% in the ANH group; nonsignificant) CONCLUSIONS: Hemodilution is not an effective means to lower the risk of allogeneic blood transfusion in elective cardiac surgical patients with normal cardiac function and in the absence of high risk for coronary ischemia, provided standard intraoperative cell saving and high-dose aprotinin are used.  (+info)

Multicenter prospective randomized trial to compare heart failure management strategies based on clinical assessment of volume status vs. direct measurement of blood volume with a radioisotope technique. Subjects will be randomly assigned to a standard care strategy with guideline recommended treatment based on serial clinical assessment of blood volume or a measured blood volume strategy with guideline recommended treatment based on serial measured blood volume. All subjects will undergo blood volume measurement procedures, but the testing results will only be returned to the physician in the group assigned to management according to measured blood volume status. Subjects will be blinded to their study treatment assignment status ...
An apparatus is provided for determining a calibration coefficient of a blood property sensor located in a blood system, wherein the blood system can include a vascular portion and an extracorporeal portion. The blood property sensor can be located in the extracorporeal portion to measure the change in a blood property corresponding to the passing of an indicator. The indicator can include a known amount of an introduced dilution indicator. The controller is provided for determining the calibration coefficient of the blood property sensor corresponding to the introduced dilution indicator in the measured change in the blood property.
TITLE AND DESCRIPTION OF COURSES. VPY 211:. Lectures and practicals on the structure and functions of blood. The production, function and degradation of blood cells. Anaemias, blood coagulation, plasma proteins and blood volume measurement. The cardiovascular physiology involves the study of the structure and functions of the heart. The dynamics of blood flow and lymph flow. Blood pressure and heart rate control and regulation. Circulation of blood through special organs e.g. lungs, heart, brain, liver and kidney. Digestion in monogastric animals, prehension, mastication and swallowing. Saliva production and function. Gastric juice production, digestion and absorption of food items. Digestion in the ruminant stomach. Intestinal motility. Hormones of the gut. Avian digestion. Respiratory physiology involves the functions of respiratory system and properties of gas. Mechanism of respiration and gas exchange in the lungs. Regulation of respiratory and buffers in the blood.. Remark: Pre-clinical ...
MediLumine (pronounced ˌmɛdiluˈmin) is a world-leading provider of anatomical and functional micro-CT contrast agents. Our biomimetic Fenestra® lipid emulsions and Mvivo™ nanoparticles are used for a wide array of applications such as angiogenesis blood volume measurements, cardiovascular disease studies, tumor imaging, in-vivo vascular casting and imaging of altered liver function.. ...
The aim of this study was to measure and portray blood movement in the placenta in vivo in normal and growth restricted pregnancies, using Intra Voxel Incoherent Motion (IVIM) magnetic resonance imaging. Thirteen patients with apparently normal healthy pregnancies were scanned at 31+/-7 (mean+/-s.d.) weeks gestation and seven patients with intrauterine growth restriction (IUGR) were scanned at 31+/-4 weeks. A region of interest (ROI) was defined encompassing the placenta between the decidual and chorionic plates. The volume of moving blood within each imaging voxel of the ROI was then calculated as a percentage of the total voxel volume (f per cent). This information was colour coded to produce maps of moving blood volume. The placenta was segmented length ways into two zones of approximately equal area, termed inner and outer, the latter being adjacent to the uterine wall. f was fitted for the average in the outer zone (f(out)) and inner zone (f(in)). The parameter (f(out)-f(in)) was then calculated
Two-dimensional echocardiography can provide serial cross-sectional images of the left ventricular cavity. We examined whether such serial images from steady-state ejecting hearts would allow three-dimensional reconstruction and accurate volume estimation without major geometric assumptions. Cross-circulated, paced dog hearts were suspended in a blood-filled tank. Serial cross-sectional images were taken at 3-mm intervals along the vertical axis. Left ventricular cavity and muscle areas of each image were planimetered with a light-pen system and summated for volume: total volume = sigma (areas x 3 mm). Direct left ventricular volume was measured through the cardiac cycle with a volumetric chamber connected to a balloon in the ejecting left ventricle. In six hearts, 67 separate direct volume measurements (range 9.5--54.7 ml) from various points in the cardiac cycle were compared with the simultaneous echo volume measurements. By least squares linear regression, echo volume = 1.01 (direct volume) ...
The KDIGO Blood Strain & Quantity Administration in Dialysis webinar options Jennifer Flythe and Kevan Polkinghorne, co-chairs of the KDIGO Controversies ...
On Solaris you need to stop the volume management if you like to use the USCSI fallback SCSI transport code. Even things like cdrecord -scanbus will not work if the volume management is running. Disks made in Track At Once mode are not suitable as a master for direct mass production by CD manufacturers. You will need the disk at once option to record such disks. Nevertheless the disks made in Track At Once will normally be read in all CD players. Some old audio CD players however may produce a two second click between two audio tracks. The minimal size of a track is 4 seconds or 300 sectors. If you write smaller tracks, the CD-Recorder will add dummy blocks. This is not an error, even though the SCSI-error message looks this way. Cdrecord has been tested on an upgraded Philips CDD-521 recorder at single and double speed on a SparcStation 20/502 with no problems, slower computer systems should work also. The newer Philips/HP/Plasmon/Grundig drives as well as Yamaha CDR-100 and CDR-102 work also. ...
Because of the strength in providing high contrasts of soft tissues Magnetic Resonance Imaging (MRI) has been an important medical modality in diagnosis of tissue characterization such as tissue classification and analysis as well as quantitative imaging such as partial volume estimation. Over the past years, numerous techniques have been developed for MRI and can be roughly categorized into two principal approaches. One is a structural approach which is primarily based on spatial correlation among MR image pixels, referred to as voxels. This type of approach is considered as a spatial domain-based clustering technique, examples include edge detection, region growing, segmentation etc. As a result, a structural approach is generally used for tissue characterization such as segmentation, classification, texture analysis. The other is a statistical approach which is essentially a parametric technique based on Finite Gaussian Mixture (FGM) models coupled with Markov Random Field (MRF) to capture ...
Volume Estimation (cont.,)Generalized correlations tutorial of Thermodynamics course by Prof G.K. Suraishkumar of IIT Madras. You can download the course for FREE !
Background and Purpose-Computed tomographic perfusion (CTP) thresholds associated with follow-up brain infarction may differ by time from symptom onset to imaging and reperfusion. We confirm CTP thresholds over time to imaging and reperfusion in patients with acute ischemic stroke from the HERMES collaboration (Highly Effective Reperfusion Evaluated in Multiple Endovascular Stroke Trials) data. Methods-Patients with occlusion on CT angiography were acutely imaged with CTP. Noncontrast CT and magnetic resonance-diffusion weighted imaging at 24 to 48 hours defined follow-up infarction. Reperfusion was assessed on conventional angiogram. Tmax, cerebral blood flow (CBF), and cerebral blood volume maps were derived from delayinsensitive CTP postprocessing. These parameters were analyzed using receiver operator characteristics to derive optimal thresholds based on time from stroke onset-to-CTP or to reperfusion. ANOVA and linear regression were used to test whether the derived CTP thresholds were ...
Although biplane right anterior oblique-left anterior oblique (RAO/LAO) quantitative left ventricular (LV) angiography is commonly performed, justification of LV volume calculation using the area length method (originally formulated from anteroposterior-lateral (AP/LAT) angiograms) has been limited. To assess whether RAO/LAO and AP/LAT LV volumes are similar when computed by the area length method formula, we performed biplane cine LV angiography in both RAO/LAO and AP/LAT projections in random sequence in 21 patients and four LV models of known volume. LV silhouettes were drawn independently by two trained observers. Calculated angiographic volume of the models correlated almost exactly with their true volume (r = 0.999), establishing the absolute accuracy of this system. Rotation of the LV models through 90 degrees of obliquity at 10 degree increments demonstrated a mean change from true volume of only -5.4 +/- 0.7% (p less than 0.001). In the patient studies, rotation to the 30 degree RAO/60 ...
The Geselowitz relation is a volume-integral formulation of impedance measured between electrodes used to identify the most important influences on the measurement. Cross sectional plots of the formulation show the spatial distribution and relative importance of contributions to the total measurement. This formulation was used to analyze the admittance method, which is a technique used to separate blood and muscle signals.. Conductance catheters are used to estimate blood volume in the largest chamber of the heart, the left ventricle. Four inline electrodes are used to perform the measurement where the outer two carry an electric current and inner two measure the resulting voltage. The measured conductance of the blood indicates the volume in the left ventricle. Parallel structures also contribute to the measurement, and the most significant is cardiac muscle. The admittance method uses the capacitive component of admittance to identify the muscle signal, which is due solely to the complex ...
In fUS, detailed images of cerebral blood dynamics are captured by visualizing the minute motions induced by moving blood cells and possibly other vascular related motion such as dilation and vasoconstriction. Changes in the dynamics of the cerebral blood supply to specific locations may reflect local changes of metabolic activity upon neuronal activation. This process is referred to as neurovascular coupling (NVC). So far, fUS has been applied successfully in brains and spinal cords ranging from mice to humans, proving to be a powerful tool for studying the dynamics of endogenous brain signals.. ...
Doppler ultrasound relies up the shift in frequency and phase that occurs when pressure is exerted upon the ultrasound beam by moving blood and tissue.
coral-thrombus: A red thrombus formed in a short time from slowly moving blood, the coagulating fibrin having entangled the red corpuscles before they had time to sink.
Liver segmentation and volume determination using automatic vs. semi-automatic methods A. Emre Kavur, Naciye Sinem Gezer, Mustafa Barış, Yusuf Şahin, Savaş Özkan, Bora Baydar, Ulaş Yüksel, Çağlar Kılıkçıer, Şahin Olut, Gözde Bozdağı Akar, Gözde Ünal, Oğuz Dicle, M. Alper Selver. ...
Pill with imprint VASO 2.5 is White, Elliptical / Oval and has been identified as Vasotec 2.5 mg. It is supplied by Valeant Pharmaceuticals International.
Since 2001, Vimax Pills Male Enhancement have been purchased by over million men worldwide. Vimax Pills Male Enhancement is trusted by peoples around the world for its great safety and effectiveness. Vaso 9 ultraVaso 9 Home - Diverse Abilities.
Density or volume measurement is commonly used in the blending process to meet a specific density target of the two blended fluids with the end goal of maintaining a very tight accuracy of blend to minimize blending costs ...
Nuclear fuel technology - Tank calibration and volume determination for nuclear materials accountancy - Part 6: Accurate in-tank determination of liquid density in accountancy tanks equipped with dip tubes
Angiographic methods can provide valuable information on vessel morphology and hemodynamics, but are often qualitative in nature, somewhat limiting their ability for comparison across arteries and subjects. In this work we present a method for quantifying absolute blood volume flow rates within large vessels using dynamic angiographic data. First, a kinetic model incorporating relative blood volume, bolus dispersion and signal attenuation is fitted to the data. A self-calibration method is also described for both 2D and 3D data sets to convert the relative blood volume parameter into absolute units. The parameter values are then used to simulate the signal arising from a very short bolus, in the absence of signal attenuation, which can be readily encompassed within a vessel mask of interest. The volume flow rate can then be determined by calculating the resultant blood volume within the vessel mask divided by the simulated bolus duration. This method is applied to non-contrast magnetic resonance imaging
Objective: To determine the accuracy of volumetric analysis of teeth in vivo using cone-beam computed tomography (CBCT). Materials and Methods: The physical volume (Vw) of 24 bicuspids extracted for orthodontic purposes (16 were imaged with the I-CAT and 8 with the CB MercuRay) were determined using the water displacement technique. Corresponding pretreatment CBCT image data were uploaded into Amira 4.0 for segmentation and radiographic volume (Va). All measurements were performed twice by two observers. The statistical difference between Vw and Va was assessed using a paired Hest. The intraobserver and interobserver reliability were determined by calculating Pearson correlation coefficients and intraclass correlation coefficients. Results: The overall mean Vw of teeth specimens was 0.553 +/- 0.082 cm(3), while the overall mean Va was 0.548 +/- 0.079 cm(3) (0.529 +/- 0.078 cm(3) for observer 1 and 0.567 +/- 0.085 cm(3) for observer 2). There were statistically significant differences between Va ...
Dynamic and flow-based parameters are more informative than conventional parameters in determining fluid responsiveness and may help you avoid excessive and insufficient fluid administration.7 Clinical studies have shown that conventional volume management methods, based on conventional parameters, are misleading and insensitive.6 Advanced hemodynamic parameters such as stroke volume (SV) and stroke volume variation (SVV), are key to optimal fluid administration.. SVV has been proven to be a highly sensitive and specific indicator for preload responsiveness when managing perfusion. As a dynamic parameter, SVV has been shown to be an accurate predictor of fluid responsiveness in loading conditions induced by mechanical ventilation.6,8,9. ...
Introduction Placental dysfunction leads to intrauterine compromise and stillbirth. Hypoxia is usually cited as the underlying mechanism in pregnancies complicated by hypertensive disorders, and syncytial deportation (inferred by the presence of syncytial knots) is commonly found on light microscopy. It has been suggested that the same mechanism may underpin intrauterine death in diabetic pregnancy. We set out to test the hypothesis that syncytial knot formation was a more common finding in diabetic pregnancy.. ...
We introduce a novel contrast mechanism for imaging blood flow by use of magnetomotive optical Doppler tomography (MM-ODT), which combines an externally applied temporally oscillating high-strength magnetic field with ODT to detect erythrocytes moving according to the field gradient. Hemoglobin contrast was demonstrated in a capillary tube filled with moving blood by imaging the Doppler frequency shift, which was observed independently of blood flow rate and direction. Results suggest that MM-ODT may be a promising technique with which to image blood flow.. © 2006 Optical Society of America. Full Article , PDF Article ...
AccessGUDID - I2P24 Doppler Probe (05055679400083)- A stationary probe directs a continuous 4MHz beam of ultrasound waves at blood flowing in the descending aorta. The shift in the frequency of the reflected ultrasound waves caused by the moving blood cells are translated by the CardioQ™ into a real time display of the velocity of the blood against time. Analysis of the waveform provides information on a range of cardiac parameters to be derived.
The results were somewhat surprising. In preparing their hypothesis, the research team estimated that smaller particles were probably the most effective since they would move the most in collisions with blood cells, much like what happens when a small ball bounces off a larger one. But just the opposite proved true. The smaller particles appeared to skirt through the mass of moving blood cells and were less likely to experience the trampoline effect and get bounced to the cell-free layer, says Ma.. Ma proposed the study after talking to a UConn pharmaceutical scientist about drug development at a campus event five years ago.. We had a great conversation about how drugs are made and then I asked, But how can you be sure where the particles go? Ma recalls, laughing. Im an engineer. Thats how we think. I was curious. This was an engineering question. So I said, Lets write a proposal!. The proposal was funded by the National Science Foundations Early-concept Grants for Exploratory ...
These scientific tests looks convinced, and seems fine for all these while. But if you think about it deeply, it might not be the actual story. Lets take the example of RBCC and anemia. Anemia means the total blood volume in someone body is not sufficient. Are you convinced that just a few tenth or hundred CC of blood that a blood test can measure your total blood volume? In brief, blood test assay is taking proportion of certain substance inside a certain volume of blood, which is quantitative measurement. It doesnt sounds logic that we can measure total blood volume inside a body using this kind of quantitative measurement. Let me describe using a real life example. Assume inside a mall there are 1 million people and we do not know. We would like to know the total number of people and we started the survey. If we sample using 100 people, 60 men and 40 women, we may be able to get the proportion of man to woman in the mall, but we will never able to know the total number of people inside the ...
DI-fusion, le Dépôt institutionnel numérique de lULB, est loutil de référencementde la production scientifique de lULB.Linterface de recherche DI-fusion permet de consulter les publications des chercheurs de lULB et les thèses qui y ont été défendues.
An Alternative Method to the Volume Estimation of Cavities with Irregular Surface in the Cadaver: Measuring Right Cardiac Ventricle of the Fetus by Using Mercury ...
This edited volume analyses the global making of security institutions and practices in our postcolonial world. The volume will offer readers the opportunity to
INTRODUCTION: Cerebral vasospasm is the leading cause of morbidity and mortality in patients with aneurysmal subarachnoid haemorrhage (SAH) surviving the initial ictus. Commonly used techniques for vasospasm assessment are digital subtraction angiography and transcranial Doppler sonography. These techniques can reliably identify only the major vessel spasm and fail to estimate its haemodynamic significance. To overcome these issues and to enable comprehensive non-invasive assessment of vasospasm inside the interventional suite, a novel protocol involving measurement of parenchymal blood volume (PBV) using C-arm flat detector computed tomography (FDCT) was implemented. MATERIALS AND METHODS: Patients from the neuro-intensive treatment unit (ITU) with suspected vasospasm following aneurysmal SAH were scanned with a biplane C-arm angiography system using an intravenous contrast injection protocol. The PBV maps were generated using prototype software. Contemporaneous clinically indicated MR scan including
In medicine, intravascular volume status refers to the volume of blood in a patients circulatory system, and is essentially the blood plasma component of the overall volume status of the body, which otherwise includes both intracellular fluid and extracellular fluid. Still, the intravascular component is usually of primary interest, and volume status is sometimes used synonymously with intravascular volume status. It is related to the patients state of hydration, but is not identical to it. For instance, intravascular volume depletion can exist in an adequately hydrated person if there is loss of water into interstitial tissue (e.g. due to hyponatremia or liver failure). Volume contraction of intravascular fluid (blood plasma) is termed hypovolemia, and its signs include, in order of severity: a fast pulse infrequent and low volume urination dry mucous membranes (e.g. a dry tongue) poor capillary refill (e.g. when the patients fingertip is pressed, the skin turns white, but upon release, the ...
Do all POTS patients have low blood volume?
Description Spirometry (Current Procedural Terminology [CPT] code 94010 [spirometry], 94060 [spirometry before and after bronchodilators]) assesses the integrated mechanical function of the lung, chest wall, and respiratory muscles by measuring the total volume of air exhaled from a full lung (total lung capacity [TLC]) to maximal expiration ...
In a recent issue of AJKD, Severs et al highlighted the complications of commonly used intravenous solutions for volume management. Complete our nephrology jumble-bumble to test your knowlegde on fluid management!. ...
Previous studies applying automatic preprocessing methods on Structural Magnetic Resonance Imaging (sMRI) report inconsistent neuroanatomical abnormalities in Autism Spectrum Disorder (ASD). In this study we investigate inter-method differences as a possible cause behind these inconsistent findings. In particular, we focus on the estimation of the following brain volumes: gray matter (GM), white matter (WM), cerebrospinal fluid (CSF), and total intra cranial volume (TIV). T1-weighted sMRIs of 417 ASD subjects and 459 typically developing controls (TDC) from the ABIDE dataset were estimated using three popular preprocessing methods: SPM, FSL, and FreeSurfer (FS). Brain volumes estimated by the three methods were correlated but had significant inter-method biases; except TIVSPM versus TIVFS, all inter-method differences were significant. ASD versus TDC group differences in all brain volume estimates were dependent on the method used. SPM showed that TIV, GM, and CSF volumes of ASD were larger than TDC
The 1,295 ha (3,200 ac) Swanton Pacific Ranch (Swanton) and the associated Valencia Tract in Santa Cruz County have been managed by California Polytechnic State University, San Luis Obispo (Cal Poly) since 1987. Swantons Valencia Tract is a 239 ha (591 ac) property located north of Watsonville, California. Cal Poly forest managers have conducted two harvest entries since acquiring ownership of the Valencia tract utilizing a modified BDq individual tree selection approach. A 10-year continuous forest re-inventory (CFI) was completed for the Valencia coast redwood tract to update and enhance the growth and yield analysis needed for the Non-Industrial Timber Management Plan (NTMP) sustainability analysis.. The California Growth and Yield Modeling Cooperative -Forest and Stand Evaluation Environment (FORSEE) program and 10-year CFI data were utilized to perform a sustainability analysis comparing trees per acre, basal area per acre, quadratic mean diameter, and gross volume per acre. Several tree ...
Moving blood throughout the body, the circulatory system, also called the cardiovascular system, comprises 4 parts, the heart, arteries, blood, capillaries, and veins. This system stabilizes body temperature and pH, maintains homeostasis, moves nutrients (such as amino acids and electrolytes), oxygen, carbon dioxide, hormones, and blood cells into and out of the cells nourishing and fighting disease, while simultaneously keeping us alive [1-2].. This transport of oxygenated blood from the lungs and heart throughout the body occurs through the arteries. As heart disease remains the number one cause of death, coronary artery disease, heart failure, heart attack, arrhythmia, and other cardiovascular conditions such as hypertension and high blood cholesterol levels can damage the cardiovascular system [3-4].. We often overlook the importance of sufficiently effective blood flow to the brain, when considering the mood and cognitive disorders. In studies, we find an improvement in mood and cognition, ...
Your heart pumps blood through a network of arteries, veins, and capillaries. The moving blood pushes against the arterial walls, and this.... ...
The circulation system moves blood through the body, and veins are an important part of that system. Most veins carry deoxygenated blood from bodily tissue back to the heart, where it receives fresh oxygen. Veins must work against gravity to return blood the heart. The muscles of the leg help that process, and valves within the veins usually keep the moving blood from flowing back down toward the feet. Because the veins in the legs are always fighting gravity and dependent on the…. ...
The ventricles are the large lower chamber of the heart. They are responsible for moving blood to the organs and tissues of the body. In ventricular fibrillation, the hearts ventricles contract in a rapid and chaotic manner. As a result, little or no blood is pumped from the heart. Unless medical help is provided immediately, ventricular fibrillation will lead to cardiovascular collapse and sudden death.. ...
The hearts physical function is to move blood, pumping and moving blood 24/7 with every heartbeat. The heart has to be physically very strong and powerful because it has a … Lire la suite... ...
The ventricles are the large lower chamber of the heart. They are responsible for moving blood to the organs and tissues of the body. In ventricular fibrillation, the hearts ventricles contract in a rapid and chaotic manner. As a result, little or no blood is pumped from the heart. Unless medical help is provided immediately, ventricular fibrillation will lead to cardiovascular collapse and sudden death.. ...
Gas adsorption analysis is not only used for the determination of BET-surface area but for the analysis of pore size distribution and total pore volume determination as well.
By carefully considering all the challenges of high-field VASO and filling behavior of the relevant vasculature, the proposed method can detect and quantify CBV changes with high CNR in human brain at 7T.
Intragastric Balloons procedure includes initially uninflated balloons are inserted in to the stomach and then inflate the balloons in the stomach to decre
Seating systems are platform designed to accommodate the person seating in vehicle. Seating has modified through simple seating systems to complex masterpiece
Goodscan 300Mini is a bulk measurement solution specially designed for logistics and warehousing. Support regular and irregular bulk goods measurement the smallest can measure 101010cm small goods and the maximum can measure 100100100cm b
Williams, Scott (3 April 2002). "Blood Volume Determination". Retrieved 15 September 2016. Lombardi, Max H ( ...
KEITH, N. M.; ROWNTREE, L. G.; GERAGHTY, J. T. (1 October 1915). "A METHOD FOR THE DETERMINATION OF PLASMA AND BLOOD VOLUME" ( ... With Norman Keith of Toronto, Rowntree invented a method to calculate blood and plasma volume using a red dye dilution method. ... ABEL, J. J.; ROWNTREE, L. G.; TURNER, B. B. (1913). "On the removal of diffusible substances from the circulating blood by ...
... typically injected to aid in the determination of total blood and plasma volume. Iodine-131 iodinated albumin (trade name ... one can calculate the total blood volume. It can also be used to calculate the blood plasma volume using a similar method. The ... Iodine (125I) human albumin is used to determine a person's blood volume. For this purpose, a defined amount of radioactivity ... From the radioactivity of these samples, the original radioactivity per blood volume can be calculated; and knowing the total ...
Cowan, J. M.; Weathermon, A.; McCutcheon, J. R.; Oliver, R. D. (1 September 1996). "Determination of Volume of Distribution for ... Each is defined as either a mass of alcohol per volume of blood or a mass of alcohol per mass of blood (never a volume per ... Blood alcohol content (BAC), also called blood alcohol concentration or blood alcohol level, is a measurement of alcohol ... volume). 1 milliliter of blood has a mass of approximately 1.06 grams. Because of this, units by volume are similar but not ...
"A method for the determination for the volume of blood in animals". The Journal of Physiology. 33 (6): 493-505. 1906. doi: ... with Johanne Christiansen & John Scott Haldane: "The absorption and dissociation of carbon dioxide by human blood". The Journal ...
Sometimes arterial blood gas tests are also required. Spirometry the determination of maximum airflow at a given lung volume as ... Originally, it was thought that blood reaching the right side of the heart passed through small 'pores' in the septum into the ... He believed that the blood must have passed through the pulmonary artery, through the lungs, and back into the heart to be ... Pulmonary Function Tests including spirometry, as above, plus response to bronchodilators, lung volumes, and diffusion capacity ...
American Journal of Anatomy, ISSN 0002-9106, 02/1908, Volume 7, Issue 4, pp. 469-487 Blood Urea Determinations in 211 Cases. ... The Anatomical Record, ISSN 0003-276X, 01/1910, Volume 4, Issue 1, pp. 23-47 The effect of contraction on the volume of the ... The Anatomical Record, ISSN 0003-276X, 07/1908, Volume 2, Issue 4, pp. 143-156 While traveling in Europe on the Sarah Berliner ... Biological Bulletin, ISSN 0006-3185, 01/1908, Volume 14, Issue 2, pp. 78-88 The structure of smooth muscle in the resting and ...
Volume 3, Number One (1 May 1994) Wilkinson, Charles. Blood Struggle: The Rise of Modern Indian Nations. Boston: W. W. Norton ... Blood Struggle, p. 103. Wilkinson, Charles. Blood Struggle, p. 104 Wilkinson, Charles. Blood Struggle, p. 128 Hagan, William T ... Blood Struggle, pp. 186-189 Wilkinson, Charles. Blood Struggle, pp 243-248. "Archived copy". Archived from the original on ... the movement for self-determination gained strength. Self-determination was not official federal government policy until 1970, ...
"Determination of Volume of Distribution for Ethanol in Male and Female Subjects". Journal of Analytical Toxicology. 20 (5): 287 ... Blood alcohol content, blood ethanol concentration, blood alcohol level, blood alcohol concentration, blood alcohol. ... Each is defined as either a mass of alcohol per volume of blood or a mass of alcohol per mass of blood (never a volume per ... Approximate blood alcohol percentage (by volume)[7]. Based on one drink having 0.5 US fl oz (15 ml) alcohol by volume Drinks ...
"Determination of volume of distribution for ethanol in male and female subjects". Journal of Analytical Toxicology. 20 (5): 287 ... Blood alcohol content (BAC), also called blood alcohol concentration, blood ethanol concentration, or blood alcohol level, is ... Each is defined as either a mass of alcohol per volume of blood or a mass of alcohol per mass of blood (never a volume per ... Blood alcohol concentration is usually expressed as a percentage of ethanol in the blood in units of mass of alcohol per volume ...
... of red blood cells has been used as a means of determining total blood volume without the use of radiolabels such ... allowing volume determinations in low birth weight infants and pregnant women who could not otherwise be exposed to the ...
319-322 J. C. Whitehorn: "A system of blood analysis. Supplement II. Simplified method for the determination of chlorides in ... Wiley Encyclopedia of inorganic chemistry: Volume 4, p. 1704: Chen et al.: United States Patent 5518131 - "Etching molydbenum ... blood or plasma". Journal of Biological Chemistry (1921), 45 p. 449-60. Yu, Shanxin; et al. (2005). "Application of ammonium ...
Determination of blood type for blood transfusion or transplants Blood cultures are commonly taken if infection is suspected. ... "complete blood count") Hematocrit MCV ("mean corpuscular volume") Mean corpuscular hemoglobin concentration (MCHC) Erythrocyte ... a protein or other biomolecule measured in a blood test Blood film, a way to look at blood cells under a microscope Blood lead ... Typical clinical blood panels include a basic metabolic panel or a complete blood count. Blood tests are also used in drug ...
2003). "Noninvasive measurement of regional cerebral blood flow and regional cerebral blood volume by near-infrared ... and activity of specific regions of the brain by continuously monitoring blood hemoglobin levels through the determination of ... NIRS can be used to quantify blood flow, blood volume, oxygen consumption, reoxygenation rates and muscle recovery time in ... When a specific area of the brain is activated, the localized blood volume in that area changes quickly. Optical imaging can ...
... is the volume of blood plasma that is cleared of solute-free water per unit time. An example of its use is in the determination ... How rapidly the kidney clears the blood plasma of a substance (be it water or solute) is the renal clearance, which is related ... as the kidney usually produces concentrated urine except in the cases of volume overload by the individual. At its simplest, ...
J. Jeffreys, Views upon the statics of the human chest, animal heat, and determinations of blood to the head. London 1843. ... D. Zuck, Julius Jeffreys and the Physiology of Lung Volumes, Proc. History of Anaesthesia Society - June 1990, Vol. 8b, pp55-61 ... and determinations of Blood to the Head".[citation needed] 'Statics' made some important contributions to the understanding of ... David Zuck's 1991 article "Julius Jeffreys and the Physiology of Lung Volumes" he concluded that Julius was the first physician ...
Some measure the hematocrit by comparing the total volume of red blood cells to the volume of blood sampled, and derive the MCV ... and one of which was used for the white blood cell count and hemoglobin determination. The Model S also determined the mean ... By multiplying the mean cell volume by the red blood cell count, the hematocrit (HCT) or packed cell volume (PCV), a ... Blood is composed of a fluid portion, called plasma, and a cellular portion that contains red blood cells, white blood cells ...
... blood pressure monitoring, ambulatory MeSH E01.370.370.150 - blood volume determination MeSH E01.370.370.170 - capillary ... blood circulation time MeSH E01.370.370.130 - blood flow velocity MeSH E01.370.370.140 - blood pressure determination MeSH ... blood gas monitoring, transcutaneous MeSH E01.450.150.100.105 - blood glucose self-monitoring MeSH E01.450.150.100.110 - blood ... whole blood coagulation time MeSH E01.450.375.120 - blood grouping and crossmatching MeSH E01.450.375.125 - blood sedimentation ...
Berti M, Buso G, Colautti P, Moschini G, Stlevano BM, Tregnaghi C (August 1977). "Determination of selenium in blood serum by ... Jinkins, J. R. (1987). "Large volume full columnar lumbar myelography". Neuroradiology. 29 (4): 371-373. doi:10.1007/bf00348917 ... It is the first transcription factor required for determination of osteoblast commitment, followed by Sp7 and Wnt-signaling. ...
Alveolar dead space is sum of the volumes of those alveoli which have little or no blood flowing through their adjacent ... During strenuous exercise, CO2 will rise throughout the exhalation and may not be easily matched to a blood gas determination, ... which led to serious errors of interpretation early in the history of dead space determinations. Example: For a tidal volume of ... is the dead space volume and V t {\displaystyle V_{t}} is the tidal volume; P a CO 2 {\displaystyle P_{a\,{\ce {CO2}}}} is the ...
Her blood splattered on the wall and horses, and Jehu's horse trampled her corpse. He entered the palace where, after he ate ... In his two-volume Guide to the Bible (1967 and 1969), Isaac Asimov describes Jezebel's last act: dressing in all her finery, ... make-up, and jewelry, as deliberately symbolic, indicating her dignity, royal status, and determination to go out of this life ... Asimov, Isaac (1988). Asimov's Guide to the Bible: Two Volumes in One, the Old and New Testaments (reprint ed.). Wings. ISBN ...
... venous and capillary blood, of which only arterial blood was relevant to oxygen measurement. Millikan's own solution to these ... Volume 2, Number 4, pp. 270-288. doi:10.1007/BF02851177. Zijlstra, Willem G. et al. (2000). Visible and near infrared ... absorption spectra of human and animal haemoglobin: determination and application. VSP. ISBN 90-6764-317-3. Albert F. Gunns ( ... Severinghaus, John W.; Astrup, Poul B. (1986). History of blood gas analysis. VI. Oximetry. Journal of Clinical Monitoring and ...
... which is a device used to find the quantity of platelets in a specified volume of blood. This device is named in conjunction ... an instrument used for colorimetric determination of the blood's hemoglobin content. His name is also associated with the " ... "Sahli pipette method" for performing red blood cell counts, as well as the "Hayem-Sahli hemocytometer", ...
... at the Philipps University of Marburg with a thesis on the development of a device for the automated determination of blood ... For manual dosing of small volumes in the field of biomedical research, clinical chemistry, and the environmental and food ... he worked on large amounts of chromatography samples with a volume of less than a milliliter for further analysis. At that time ...
In the first volume, Karin bites Fumio, injecting her blood and leaving Fumio cheery, energetic, and with a great increase in ... It was also revealed that despite being one of the most mild-mannered vampires, Henry's inherent determination to protect his ... Her husband, James Maaka's blood preference was "young" blood, which Elda collected for him since he harmed humans if he bit ... However, instead of having to drink blood like normal vampires, Karin's body overproduces blood. Generally, once a month she ...
Helv Med Acta 13:328-332, 1946 Riley RL, Lilienthal JL Jr, Proemmel DD, et al: On the determination of the physiologically ... Am J Physiol 147:191-198, 1946 McNicol MW, Campbell EJM: Severity of respiratory failure: arterial blood gases in untreated ... and VD/VT is the ratio of physiologic dead space over tidal volume. R = P E CO 2 ( 1 − F I O 2 ) P i O 2 − P E O 2 − ( P E CO 2 ... in the inspired gas are in equilibrium with their dissolved states in the blood Inspired and alveolar gases obey the ideal gas ...
Peaple, Simon (2015). "Mud, Blood and Determination. The History of the 46th (North Midland) Division in the Great War". ... volume V, London, HMSO, 1947 Walker, Jonathan (1998). "The Blood Tub. General Gough and the Battle of Bullecourt, 1917". E and ... Edmonds, ed., Sir John (1947). Military Operations: France and Belgium 1918, volume IV. London: HMSO.CS1 maint: extra text: ...
The volume of distribution of estradiol enantate has been reported to be 5.087 L. Estradiol enantate is excreted preferentially ... Only four determinations were made: days 0, 10, 20, and 30. Assays were performed using radioimmunoassay. Source was Garza- ... However, a metabolic study found that traces of radiolabeled estradiol enantate remained detectable in blood for at least 30 to ... It used radioimmunoassay for the determinations, with no mention of chromatographic separation. Estradiol levels following an ...
Fetal red blood cells (RBC) are usually bigger than maternal RBCs, and the average volume of RBCs, the mean corpuscular volume ... Another method, human chorionic gonadotropin (hCG) determination, can detect maternal blood because maternal blood has high ... Finally, a white blood cell count can detect maternal blood in the sample, as fetal white blood cells are primarily leukocytes ... If the bleeding is severe, immediate delivery is an option as long as the fetus is old enough to survive, or fetal blood volume ...
High-speed or superspeed centrifuges can handle larger sample volumes, from a few tens of millilitres to several litres. ... In addition to purification, analytical ultracentrifugation (AUC) can be used for determination of the properties of ... Separation of urine components and blood components in forensic and research laboratories ... Microcentrifuges are used to process small volumes of biological molecules, cells, or nuclei. Microcentrifuge tubes generally ...
This necessitates frequent recalibration of the remaining dose (determination of activity per unit volume) and careful planning ... "J Cereb Blood Flow Metab. 30 (5): 985-93. doi:10.1038/jcbfm.2009.269. PMC 2949183. PMID 20029452.. ... Changing of regional blood flow in various anatomic structures (as a measure of the injected positron emitter) can be ... What is actually measured indirectly is the flow of blood to different parts of the brain, which is, in general, believed to be ...
Volume 1.. Also in: Timothy Snyder; Ray Brandon (2014). Stalin and Europe: Imitation and Domination, 1928-1953. Oxford ... Experience teaches that a movement and a people who have burned their bridges fight with much greater determination and fewer ... "the fate of the Jews as a sort of blood bond to tie the civil and military leadership to the Nazi cause".[127] ...
In:Translational Genomics for Crop Breeding: Volume 1", Biotic Stress, John Wiley & Sons, Inc.: 241-265, doi:10.1002/ ... The antifreeze protein was found to inhibit ice recrystallization in the flounder blood, but had no effect when expressed in ... of taro cystatin protects transgenic tomato against Meloidogyne incognita infection by means of interfering sex determination ...
First Dragon Ball GT DVD volume, released in Japan by Toei Animation on February 6, 2008, depicting three forms of Goku. ... " / "Ya' Data's Flawed!! Son Goku's True Determination". Transcription: "Dēta Nya Nai Ze!! Gokū no Chō-honki" (Japanese: データにゃな ... Dragon Ball: Curse of the Blood Rubies. *Dragon Ball: Sleeping Princess in Devil's Castle ...
Sodium is an essential nutrient that regulates blood volume, blood pressure, osmotic equilibrium and pH; the minimum ... Dinnebier, R. E.; Behrens, U.; Olbrich, F. (1998). "Lewis Base-Free Phenyllithium: Determination of the Solid-State Structure ... since density is defined as mass per unit volume. The first factor depends on the volume of the atom and thus the atomic radius ... which was known partly for its high abundance in animal blood. He named the metal inside the material "lithium".[20][15][18] ...
... increased blood volume, or increased cerebrospinal fluid (CSF) volume, which may, in turn, have secondary symptoms. ... Tumors have characteristics that allow determination of malignancy and how they will evolve, and determining these ... Blood vessels enter the central nervous system through the perivascular space above the pia mater. The cells in the blood ... Most of the brain is separated from the blood by the blood-brain barrier (BBB), which exerts a restrictive control as to which ...
Under different conditions, deoxygenated blood can be shunted back to the body or oxygenated blood can be shunted back to the ... Biology of the Reptilia is an online copy of the full text of a 22 volume 13,000 page summary of the state of research of ... Some reptiles exhibit temperature-dependent sex determination (TDSD), in which the incubation temperature determines whether a ... Blood is then extracted; the serum is separated, purified and freeze-dried.[146] The cytotoxic effect of snake venom is being ...
Kidd, I. G. Posidonius: The Translation of the Fragments, Volume III *^ a b Diogenes Laërtius, The Lives and Opinions of ... He compared them to a living being, with physics the meat and blood, logic the bones and tendons holding the organism together ... Determinations of the Earth's Circumference, Ql. J. of the Royal Astron. Soc., Vol. 16, p.152. ... The History of Cartography, Volume 1: Cartography in Prehistoric, Ancient, and Medieval Europe and the Mediterranean, 1987, pp ...
Thus, in most cases, small amounts of BaP are metabolized prior to being passed into the blood.[citation needed] The lungs are ... Kleiböhmer, W. (2001). "Polycyclic Aromatic Hydrocarbon (PAH) Metabolites". Environmental Analysis (Volume 3 of Handbook of ... Aygün, SF; Kabadayi, F (December 2005). "Determination of benzo[a]pyrene in charcoal grilled meat samples by HPLC with ... BaP has an effect on the number of white blood cells, inhibiting some of them from differentiating into macrophages, the body's ...
That as the body attempts to compensate for low iron levels by increasing red blood cell production in the young, sieve-like ... The Spitalfields Project, Volume 2: The Anthropology: Council For British Archaeology, York, 1993. Ames, Kenneth M. "The ... Lovejoy, C.O. (1985). "Dental wear in the Libben population: its functional pattern and role in the determination of adult ... a new method for the determination of adult skeletal age at death". American Journal of Physical Anthropology. 68: 15-28. doi: ...
Obesity - Volume 1 - HCP 23-I, Third Report of session 2003-04. Report, together with formal minutes. London, UK: TSO (The ... Gray DS, Fujioka K. Use of relative weight and Body Mass Index for the determination of adiposity. J Clin Epidemiol. 1991, 44 ( ... Informativeness of indices of blood pressure, obesity and serum lipids in relation to ischaemic heart disease mortality: the ... Increased body fat mass and decreased extracellular fluid volume in adults with growth hormone deficiency. Clin. Endocrinol. ( ...
Petri Nahás EA, Pontes A, Nahas-Neto J, Borges VT, Dias R, Traiman P. Effect of total abdominal hysterectomy on ovarian blood ... Warren, volume editors, Claudio N. Soares, Michelle. The menopausal transition : interface between gynecology and psychiatry [ ... 性別決定和分化(英语:Template:Sex determination and differentiation) ... 性別決定和分化(英语:Template:Sex determination and differentiation
"Hansard volume 608. UK Parliament. 27 April 2016. pp. Column 1433. Retrieved 7 May 2018.. ... South Yorkshire Police had performed blood alcohol tests on the victims, some of them children, and ran computer checks on the ... However the determination by Stuart-Smith was heavily criticised by the Justice Minister, Lord Falconer, who stated "I am ... lung or blood circulation function for some time after being removed from the crush. The report stated that placing fans who ...
a flow-volume loop, which graphically depicts the rate of airflow on the Y-axis and the total volume inspired or expired on the ... Forced vital capacity: the determination of the vital capacity from a maximally forced expiratory effort. ... Forced expiratory volume in 1 second (FEV1)[edit]. FEV1 is the volume of air that can forcibly be blown out in one second, ... Tidal volume (TV)[edit]. Tidal volume is the amount of air inhaled or exhaled normally at rest. ...
NBPA Website The emphasis is on the common experience and determination of the people of African, African-Caribbean and Asian ... As a result, some of the European descended population also has West African or Amerindian blood. According to the last census ... 2010, Ancient Local Evolution of African mtDNA Haplogroups in Tunisian Berber Populations, Human Biology, Volume 82, Number 4, ... The official policy became one of biological and cultural assimilation: "Eliminate the full-blood and permit the white ...
a b D'Azevedo, Warren L., Volume Editor. Handbook of North American Indians, Volume 11: Great Basin. Washington, DC: ... In 1954, a group of mixed blood Utes were legally separated from the Northern Utes and called the Affiliated Ute Citizens.[10] ... Since the Indian Self-Determination and Education Assistance Act of 1975, the Utes control the police, courts, credit ... Bruce E. Johansen; Barry M. Pritzker (23 July 2007). Encyclopedia of American Indian History [4 volumes]. ABC-CLIO. p. 811. ...
Fly larvae and fly eggs are used to aid in the determination of a PMI. In order for the data to be useful the larvae and eggs ... "Because insects are cold-blooded animals, their rate of development is more or less dependent on ambient temperature." [23] ... The very popular ten-volume book series, Alfred Brehem's Thierleben (Life of Animals, 1876-1879) expounded on many zoological ... This style of age determination is in the process of being used to more accurately find the age of the instars and pupa; ...
... of the total blood volume in a healthy adult,[4] making them substantially less numerous than the red blood cells at 40% to 45% ... Tak T, Tesselaar K, Pillay J, Borghans JA, Koenderman L (October 2013). "What's your age again? Determination of human ... All white blood cells have nuclei, which distinguishes them from the other blood cells, the anucleated red blood cells (RBCs) ... Histamine is responsible for widening blood vessels and increasing the flow of blood to injured tissue. It also makes blood ...
When the Kainai (Blood) Nation refused to accept the sale of their lands in 1916 and 1917, the Department of Indian Affairs ... ref,,ref,{{cite web,title=Mercury Study Report to Congress Volume V: Health Effects of Mercury and Mercury Compounds ,work=EPA- ... and set forth a developmental approach to transfer centred on the concept of self-determination in health.,ref,{{cite web,url= ... title = Federalism and: perspectives for the transformation process in Eastern and Central Europe Volume 2 of George C. ...
The Freethinker, Volume 92. G.W. Foote. 1972. p. 45.. *^ "An appreciation of biologist Ernst Mayr (1904-2005)". 2005- ... "Having abandoned the tenets of Judaism at 13, he never wavered in his gentle atheism, nor in his determination to stay away ... Crile is now formally recognized as the first surgeon to have succeeded in a direct blood transfusion.[85] ... Science and Religion in Dialogue, Two Volume Set. John Wiley & Sons. p. 416. ISBN 9781405189217. On the other hand Bohr wrote ...
Over time Australia has used various means to determine membership of ethnic groups such as lineage, blood quantum, birth and ... People and Place Volume 8 No 2 Monash University. Retrieved 16 December 2009.. ... This saw a political shift from "self determination" for Aboriginal communities to "mutual obligation",[188] which has been ... However, in 1889 Parliament recognised Fanny Cochrane Smith (d:1905) as the last surviving full-blooded Tasmanian Aborigine.[g] ...
Blood was said to have literally flowed in the streets[47]; it was only after the entreaties of a couple of his Greek friends ( ... Robin Seager, 'Sulla', in The Cambridge Ancient History, Volume IX (2nd Edition), Cambridge University Press, 1994, p.207 ... who impressed on them Rome's determination to drive Mithridates from Greece and Asia Province. Sulla then advanced on Athens. ... Sulla is a major character in Roman Blood, the first of the Roma Sub Rosa mystery novels by Steven Saylor. ...
... heat therapy which dilates blood vessels to the tumor site), blood substitutes that carry increased oxygen, hypoxic cell ... When the treatment volume conforms to the shape of the tumor, the relative toxicity of radiation to the surrounding normal ... making causality determinations more difficult.[19]. Cognitive decline. In cases of radiation applied to the head radiation ... The blood feeding the tumor will carry the microspheres directly to the tumor enabling a more selective approach than ...
The Basis of Measurement: Volume 2 - Metrication and Current Practice. Pitcon Publishing (Chippenham) Ltd. pp. 222-224. ISBN 0- ... Similarly, the millimetre of mercury (symbol mmHg) was retained for measuring blood pressure.[3]:127. ... At least three separate experiments be carried out yielding values having a relative standard uncertainty in the determination ... In 1879, the CIPM published recommendations for writing the symbols for length, area, volume and mass, but it was outside its ...
regulation of urine volume. • negative regulation of apoptotic process. • renal system development. • carbohydrate metabolic ... Nishimura C, Furue M, Ito T, Omori Y, Tanimoto T (July 1993). "Quantitative determination of human aldose reductase by enzyme- ... blood vessels, lung, and liver.[8] It is a reduced nicotinamide-adenine dinucleotide phosphate (NADPH)-dependent enzyme ... Chung S, LaMendola J (September 1989). "Cloning and sequence determination of human placental aldose reductase gene". The ...
Blood pressure[edit]. As of 2017[update], only limited evidence indicated any direct link between high blood pressure and gut ... Determination of antibiotic resistance patterns. *Assessment of certain metabolic activities (e.g. D-lactate production, bile ... CS1: long volume value. *CS1 maint: BOT: original-url status unknown. *CS1 maint: multiple names: authors list ... If the strain under evaluation belongs to a species with known hemolytic potential, determination of hemolytic activity is ...
Great Britain Parliament House of Commons Health Committee (maj 2004). Obesity - Volume 1 - HCP 23-I, Third Report of session ... National Heart, Lung, and Blood Institute (1998). Clinical Guidelines on the Identification, Evaluation, and Treatment of ... Gray DS; Fujioka K (1991). "Use of relative weight and Body Mass Index for the determination of adiposity". J Clin Epidemiol. ... National Heart, Lung, and Blood Institute (NHLBI) (1998). Clinical Guidelines on the Identification, Evaluation, and Treatment ...
Inagaki, Kazumi; Haraguchi, Hiroki (2000). "Determination of rare earth elements in human blood serum by inductively coupled ... Fraksi volume. Persen atom. Peran kesehatan positif pada mamalia. Efek negatif jika berlebih. Golongan ... "Determination of Natural In Vivo Noble-Gas Concentrations in Human Blood". PLoS ONE. 9 (5): e96972. doi:10.1371/journal.pone. ... Namun, sel darah merah nukleasi, atau nucleated red blood cell, NRBC, hadir dalam sirkulasi janin dan neonatal, dan mungkin ...
Determination of Blood Volume and Its Application to Regional Perfusion in Chemotherapy Lead researcher. V C Marshall ...
Correlation of MR imaging-determined cerebral blood volume maps with histologic and angiographic determination of vascularity ... Objective: Our purpose was to evaluate the relationships between the ratio of maximum relative cerebral blood volume (rCBV) ( ...
A determination of the blood and plasma volume of dairy cattle : a study of blood and plasma volume during growth, pregnancy, ...
"Blood Volume Determination" by people in this website by year, and whether "Blood Volume Determination" was a major or minor ... "Blood Volume Determination" is a descriptor in the National Library of Medicines controlled vocabulary thesaurus, MeSH ( ... Blood Volume Determination*Blood Volume Determination. *Blood Volume Determinations. *Determination, Blood Volume ... Below are the most recent publications written about "Blood Volume Determination" by people in Profiles. ...
Determination of blood volume in fully recovered snakes. Eleven snakes (337±20 g) were anaesthetized by inhalation of 5% ... blood volume. Vp. plasma volume. VS. stroke volume. V̇O2. rate of oxygen consumption. ... while the remaining blood volume, the stressed blood volume, exerts a regulated pressure on the vessels (Greenway and Lautt, ... blood volume, mean circulatory filling pressure (MCFP), total circulatory compliance, unstressed and stressed blood volume, and ...
Blood Pressure Monitoring, Ambulatory -- WB 280 *Blood Volume Determination -- WG 141 *Bone Malalignment -- WE 225 ... At WQ 202, the caption was changed from Diagnosis to Pregnancy determination. ...
The effects of blood electrolyte composition change which result in a change of light beam geometry are eliminated by the ... based on registration of blood hemoglobin concentration, during long periods of time, such as dialysis session. A method and ... non colinear configuration at a sufficient angle to substantially eliminate the scattering properties of the blood. A primary ... A method and device for the continuous real-time monitoring of relative blood volume change, ...
Blood volume determinations. Do. Rose Bengal. Liver function studies. Do. Iodopyracet, sodium iodohippurate, sodium diatrizoate ... In many instances a determination can readily be made as to the applicability of a drug efficacy notice by an individual who is ... ii) The preparation is so packaged as to volume and type of container as to afford adequate protection and be suitable for self ... a) Hypophosphatemia is a condition in which an abnormally low plasma level of phosphate occurs in the blood. This condition is ...
Blood volume determinations. Do. Rose Bengal. Liver function studies. Do. Iodopyracet, sodium iodohippurate, sodium diatrizoate ... a) Hypophosphatemia is a condition in which an abnormally low plasma level of phosphate occurs in the blood. This condition is ... b) As used in this section, the term "large volume parenteral drug product" means a terminally sterilized aqueous drug product ... a) Hyperphosphatemia is a condition in which an abnormally high plasma level of phosphate occurs in the blood. This condition ...
Susceptibility contrast magnetic resonance imaging determination of fractional tumor blood volume: A noninvasive imaging ... Susceptibility contrast magnetic resonance imaging determination of fractional tumor blood volume: A noninvasive imaging ... Purpose: To assess tumor fractional blood volume (xi), determined in vivo by susceptibility contrast magnetic resonance imaging ... providing validation of the MRI-derived measurements of fractional tumor blood volume. Conclusions: These data clearly ...
Blood volume determination in the mouse. J Physiol (Lond). 1973;228(2):279-284.. View this article via: CrossRef Google Scholar ... Identification of rEos-like and iEos-like eosinophils in the blood of naive and HDM-treated C57BL/6 mice. White blood cells ... Indeed, beads administered locally via the airways were taken up by lung rEos but not by blood monocytes or blood eosinophils ( ... and survival in the blood in response to different inflammatory stimuli (1, 8, 9, 51). Yet, basal blood eosinophil numbers ...
... induz alterações sistêmicas circulatórias como o aumento da pressão arterial e do volume circulante efetivo, além de ter ... Blood volume. Blood volume determination. Contrast media. Microbubbles. Neoplasms. Regional blood flow. Response evaluation ... HSS induces a transient increase in velocity of the blood as well as the blood volume that is relatively selective for the ... relative blood volume was increased in B16F10 (p=0,022) and HCT-116 (p=0,039) but not on MDA-MB-231 (p=0,186). Changes on ...
Blood Volume Determination. Method for determining the circulating blood volume by introducing a known quantity of foreign ... Cardiac Volume. The volume of the HEART, usually relating to the volume of BLOOD contained within it at various periods of the ... The volume of packed RED BLOOD CELLS in a blood specimen. The volume is measured by centrifugation in a tube with graduated ... Volume of circulating BLOOD. It is the sum of the PLASMA VOLUME and ERYTHROCYTE VOLUME. ...
That PBV has preferential (≈ 60%) blood flow weighting is an important finding, which is of clinical significance when ... PBV is a composite perfusion parameter incorporating both blood flow and blood volume weightings. ... C-arm flat detector computed tomography parenchymal blood volume imaging: the nature of parenchymal blood volume parameter and ... PBV is a composite perfusion parameter incorporating both blood flow and blood volume weightings. That PBV has preferential (≈ ...
Are you bleeding? Validation of a machinelearning algorithm for determination of blood volume status: application to remote ... Are you bleeding? Validation of a machinelearning algorithm for determination of blood volume status: application to remote ... Family history of premature cardiovascular disease: blood pressure control and longterm mortality outcomes in hypertensive ... Family history of premature cardiovascular disease: blood pressure control and longterm mortality outcomes in hypertensive ...
Blood volume determination in the mouse. J Physiol. 1973;228(2):279-284. ... Blood samples (50 µL) were collected from the retro-orbital venous plexus 3 h later, as has been previously described.11 Plasma ... Your Name) has forwarded a page to you from Blood Journal Message Body (Your Name) thought you would be interested in this ... Volume: 130. Issue: 11. Pages: 1364-1374. DOI: ...
The Blood Volume in the Lower Extremities: A Technique for Its Determination Utilizing Cr-51 Tagged Red Cells. Adams, John P.; ... Biochemical Investigations of Deer Antler Growth: Part I. Alterations of Deer Blood Chemistry Resulting from Antlerogenesis. ...
Determination of circulating blood volume by continuously monitoring hematocrit during hemodialysis.. Leypoldt JK, Cheung AK, ... Hematocrit as an indicator of blood volume and a predictor of intradialytic morbid events. ...
Rychter, Z., Kopecky, M., & Lemez, L. (1955). A micromethod for determination of the circulating blood volume in chick embryos ... Shear Stress on Blood Vessels. To analyze the flow within a blood vessel, it is useful to start with a simplified model of ... Blood Rheology. One way to model the non-Newtonian properties of the blood is to consider it as a generalized Newtonian fluid, ... Of special importance in developmental physiology is the shear stress imposed by blood flow on the walls of blood vessels, ...
Fundamentals and applications for blood flow and heart volume determination. Stuttgart: Thieme 1971Google Scholar ... Lange, P., Farr, F., Onnasch, D., Heintzen, P. H.: Factors affecting the accuracy of ventricular volume determination. In: ... On-line processing of the video-image for left ventricular volume determination. Comput. biomed. Res. 4, 474-485 (1971)Google ... Thereby right and left ventricular volume, shape and contraction pattern can be quantitated and used to characterize the ...
Plasma and blood volume determination.. Evans blue dye (T-1824) dilution was used to measure plasma volume before exercise on ... Figure 4B shows the percent changes in blood volume from preexercise to 0, 30, 60, and 90 min postexercise. Blood volume was ... Preexercise blood volume was calculated from plasma volume and hematocrit. Exercise and postexercise changes in blood and ... Body Weights, Plasma Volume and Blood Volume. Total body water loss.. Subjects were weighed pre- and postexercise in the same ...
... blood samples were collected for packed cell volume (PCV) determination. Individual FECs were performed every seven days from ... Blood samples were collected at days 0 and 7 of the third parasitic challenge. RNA was extracted from tissue and blood samples ... Blood samples were collected in PAXgene Blood RNA tubes (Preanalytix, Valencia, USA) at D0 and D7 of the third parasitic ... Blood samples collected in PAXgene tubes were submitted to RNA extraction using the PAXgene Blood RNA Kit (Preanalytix), ...
Hbmass and blood volume (BV) were measured using the optimized CO-rebreathing technique, VO2max by an incremental test on a ... Hbmass and blood volume were meas-ured using the optimized CO-rebreathing technique, VO2max by an incremental test on a ... 25.4 g compared to the group with low training volume (−1 LBM) and overlapped with the effects of age. A strong relationship ... children with a weekly training volume of more than 4 h show a 7% higher Hbmass than untrained children. Although this training ...
Relative Blood Volume Changes Following the Use of Intravenous Glucose Injections in Pneumonia1 JOHN H. L. HEINTZELMAN, M. D. ... Relative Blood Volume Changes Following the Use of Intravenous Glucose Injections in Pneumonia1. Ann Intern Med. ;4:1336-1339. ... Two writers state that there is no change in the blood volume following glucose injections37. Such investigations have been ... A review of the literature on the subject of blood volume changes following intravenous injections of hypertonic glucose ...
Williams, Scott (3 April 2002). "Blood Volume Determination". Retrieved 15 September 2016. Lombardi, Max H ( ...
Determination of the critical absolute blood volume for intradialytic morbid events. Abstract The reduction of blood volume ... prone patients to identify the absolute blood volume at which they developed clinical symptoms. A volume of 240 mL of ultrapure ... we presented a simple method to determine the absolute blood volume during routine hemodialysis (HD) carried out without blood ... Concordance of absolute and relative plasma volume changes and stability of Fcells in routine hemodialysis. Abstract Central ...
Advanced forms of the invention correct for proximity of blood-vessel walls. This system is particularly compatible with ... and blood-vessel walls) and transmit this reflected light back through the catheter to respective detectors outside the ... Sensor calibration and blood volume determination US7734322B2 (en) 1997-10-14. 2010-06-08. Transonic Systems, Inc.. Blood ... Sensor calibration and blood volume determination US6041246A (en) * 1997-10-14. 2000-03-21. Transonic Systems, Inc.. Single ...
... blood volume and other indicators of cardiovascular health. ... Sensor calibration and blood volume determination US6746407B2 ( ... Blood volume measures the amount of blood present in the cardiovascular system. Blood volume is also a diagnostic measure which ... Blood volume calculations. In some embodiments, blood volume may be measured independently or in addition to the cardiac output ... General methods of measuring blood volume are known in the art. In some embodiments, circulating blood volume may be measured ...
Plasma Volume Determination. The procedure is essentially the same as that for blood volume determination, except that the ... 3. Calculate the patients blood volume (in mL) using the following formula:. Net cpm/mL reference solution × DF = blood volume ... Serial Blood Volume Determinations. Jeanotope (Iodinated I-125 Albumin Injection) is administered in sufficiently low dosage to ... The formula for calculating each blood volume determination after the first one thus becomes:. Net cpm/mL reference solution × ...
Determination of the standard value of circulating blood volume during anesthesia using ... ... PURPOSE: The standard value for circulating blood volume (BV) during anesthesia was determined by a multicenter study in Japan ... Abnormally increased physiologic deadspace volume (Vd(phys)), consisting of alveolar deadspace volume and airway deadspace ... tidal volume, blood pressure, and heart rate, were maintained within physiological ... ...
  • Ginat DT, Mangla R, Yeaney G, Schaefer PW, Wang H. Correlation between dynamic contrast-enhanced perfusion MRI relative cerebral blood volume and vascular endothelial growth factor expression in meningiomas. (
  • PBV is a composite perfusion parameter incorporating both blood flow and blood volume weightings. (
  • Relative cerebral blood volume (rCBV) measurements derived from perfusion MR imaging and metabolite ratios from proton MR spectroscopy are useful in predicting glioma grade. (
  • As reported elsewhere ( 4 ), the results in most of these studies concerning the relationship between relative cerebral blood volume (rCBV) and glial tumor grade or different tumor types have been obtained by experienced radiologists working in a research environment on selected predefined disease entities, usually by using home-made software for postprocessing of raw perfusion data. (
  • Methods for the measurement of drug influx or efflux are described, and support protocols are provided for determining intravascular capillary volume and cerebral perfusion flow. (
  • Parmi les autres facteurs affectant la réponse hémodynamique, citons la pharmacodynamie des médicaments vasoactifs courants, ce qui met encore plus en évidence la complexité de la régulation du retour veineux pendant une perfusion de catécholamines exogènes. (
  • Improved perfusion MR imaging assessment of intracerebral tumor blood volume and antiangiogenic therapy efficacy in a rat model with ferumoxytol. (
  • Murine RIF-1 tumor blood flow and perfusion were quantified by deuterium NMR using D 2 O as a freely diffusible tracer. (
  • The mean tumor blood flow and perfusion rate was 18.5 ± 8.5 SD ml/(100 g·min) ( n = 46) when analyzed by a two-compartment in-series flow model. (
  • The NMR measurement of tumor blood flow and perfusion was not dependent on the number of direct intratumor injection sites and was found reproducible upon repeated measurements of individual tumors. (
  • UF during HD leads to a fall in the patient's blood volume. (
  • We manufacture the BVA-100 Blood Volume Analyzer, the first instrument approved by the FDA to provide rapid direct measurement of a patient's blood volume. (
  • No. 10/153,387, filed May 21, 2002, entitled "Measurement of Cardiac Output and Blood Volume by Non-Invasive Detection of Indicator Dilution. (
  • No. 10/487,480, filed May 17, 2004, entitled "Measurement of Cardiac Output and Blood Volume by Non-Invasive Detection of Indicator Dilution," attorney docket 64693-100. (
  • This is the resistive measurement for cell volume. (
  • Blood alcohol content ( BAC ), also called blood alcohol concentration or blood alcohol level , is a measurement of alcohol intoxication used for legal or medical purposes. (
  • Mean corpuscular volume (MCV) is a measurement of the average size of the red blood cells and indicates whether that is small, large or normal. (
  • A similar measurement, mean corpuscular hemoglobin concentration (MCHC), expresses the average concentration of hemoglobin in the red blood cells. (
  • The purpose of this study was to estimate the diagnostic accuracy of relative cerebral blood volume (rCBV) measurement in preoperative grading and differentiation of solitary intra-axial malignant brain tumors. (
  • The researchers in this paper examined the agreement between only a single point and multiple points to achieve blood volume measurement, opening up an interesting area of research for Daxor. (
  • However, in 47 patients with traumatic injuries, carcinoma, and miscellaneous diagnoses, cold agglutinin labeled with radioactive iodine (125I) gave an accurate measurement of plasma volume. (
  • Strumia MM, Strumia PV, Dugan A: Significance of measurement of plasma volume and indirect estimation of red cell volume. (
  • Mayerson HS, et al: Comparison of results of measurement of red cell volume by direct and indirect technics. (
  • Our purpose was to evaluate the relationships between the ratio of maximum relative cerebral blood volume (rCBV) (rCBV ratio = rCBV[tumor]/rCBV[contralateral white matter]) and histologic and angiographic vascularities of gliomas using the gradient-echo echoplanar MR imaging technique. (
  • C-arm flat detector computed tomography (FDCT) parenchymal blood volume (PBV) measurements allow assessment of cerebral haemodynamics in the neurointerventional suite. (
  • This paper explores the feasibility of C-arm computed tomography (CT) PBV imaging and the relationship between the C-arm CT PBV and the MR-PWI-derived cerebral blood volume (CBV) and cerebral blood flow (CBF) parameters in aneurysmal subarachnoid haemorrhage (SAH) patients developing delayed cerebral ischemia (DCI). (
  • Dynamic-contrast-enhanced-MRI with extravasating contrast reagent: rat cerebral glioma blood volume determination. (
  • 9. The apparatus of claim 1, wherein the selected blood characteristic corresponding to the detected photometric property of the diluted blood is one of a cardiac output and a flow parameter. (
  • An important factor for a high cardiac output is a high end diastolic volume in association with a high stroke volume. (
  • Intravascular indicators are stimulated, and emissions patterns detected for computation of cardiac output, cardiac index, blood volume and other indicators of cardiovascular health. (
  • indocyanine green a dye used intravenously in determination of blood volume and flow, cardiac output, and hepatic function. (
  • The interaction between the stressed and unstressed intravascular volume (Vs and Vu, respectively) regulates the venous return, which is the main determinant of cardiac output. (
  • Low doses of α-adrenergic agonists constrict veins and may often shift blood from the Vu to the Vs, subsequently increasing the venous return and cardiac output, whereas higher drug doses constrict arteries and usually decrease cardiac output. (
  • Megatope (Iodinated I 131 Albumin Injection) is indicated for use in determinations of total blood and plasma volumes, cardiac output, cardiac and pulmonary blood volumes and circulation times, and in protein turnover studies, heart and great vessel dilineation, localization of the placenta, and localization of celebral neospasms. (
  • Effect of hemodialysis on blood volume distribution and cardiac output. (
  • Effects of hemodialysis on extracellular fluid volume distribution, left ventricular volumes, and cardiac output were determined in patients with end-stage renal disease (n = 19). (
  • There results suggest that, although intravascular volume was the major determinant of cardiac output in dialyzed patients, the postdialysis reduction in cardiac output might be related more to the relocation of blood volume than to the absolute degree of blood volume contraction. (
  • The magnitude of increase in the pulmonary blood volume of the postnatal guinea pig. (
  • METHODS Sixteen litters of guinea pigs including 42 individual offspring were used for the pulmonary blood volume determinations. (
  • Except for this one value the average increase for the 24 hour group and f o r those which breathed 36 hours are 431 POSTNATAL PULMONARY BLOOD VOLUME of the same magnitude as those of the 16 hour series. (
  • A diagnostic radiopharmaceutical agent used for blood pool imaging, including cardiac first pass and gated equilibrium imaging and for detection of sites of gastrointestinal bleeding. (
  • A radiopharmaceutical diagnostic agent indicated for use in the determination of total blood and plasma volume. (
  • We aimed to evaluate the diagnostic accuracy of existing candidate whole-blood transcriptomic signatures for viral infection to predict positivity of nasopharyngeal SARS-CoV-2 PCR testing. (
  • Methods: We did a nested case-control diagnostic accuracy study among a prospective cohort of health-care workers (aged ≥18 years) at St Bartholomew's Hospital (London, UK) undergoing weekly blood and nasopharyngeal swab sampling for whole-blood RNA sequencing and SARS-CoV-2 PCR testing, when fit to attend work. (
  • We reconstructed signature scores in blood RNA sequencing data and evaluated their diagnostic accuracy for contemporaneous SARS-CoV-2 infection, compared with the gold standard of SARS-CoV-2 PCR testing, by quantifying the area under the receiver operating characteristic curve (AUROC), sensitivities, and specificities at a standardised Z score of at least 2 based on the distribution of signature scores in test-negative controls. (
  • Pharmacologists, clinical laboratories, blood transfusion centres, manufacturing firms producing diagnostic instruments, and the pharmaceutical industry will also benefit. (
  • 131 I-labelled form as diagnostic aid (blood volume determination). (
  • Diagnostic and Investigational Uses of Radiolabeled Blood Elements, R. J. Davey, M. E. Wallace, Eds. (
  • 6. The apparatus of claim 1, wherein the optical sensor is configured to correct for scatter effect of blood caused by variation in one of electrolytes, composition of the blood and variations in blood flow. (
  • 12. The method of claim 10, further comprising correcting said determined blood characteristic for a scatter effect of blood caused by a variation in one of electrolytes, composition of the blood and variations in blood flow. (
  • Analysis of weighted means showed that the C-arm CT PBV has a preferential blood flow weighting (≈ 60% blood flow and ≈ 40% blood volume weighting). (
  • That PBV has preferential (≈ 60%) blood flow weighting is an important finding, which is of clinical significance when interpreting the C-arm CT PBV maps, particularly in the setting of acute brain ischemia. (
  • Fundamentals and applications for blood flow and heart volume determination. (
  • Specifically, enhanced baroreflex-mediated changes in sympathetic nerve activity in the midluteal phase could lead to lower overall skeletal muscle blood flow and diminished peripheral vascular conductance during recovery from exercise, diminishing postexercise hypotension. (
  • PURPOSE: The present study tested the hypothesis that the anesthetic technique will influence the changes in regional blood flow (RBF) during intraoperative cardiac tamponade. (
  • An inhaled radionuclide used to measure lung function and organ blood flow. (
  • 18. A method of claim 16 wherein the rate at which the cyanine dye-labelled red blood cells flow through blood vessels is measured. (
  • Blood Flow Metab. (
  • Small tumors of less than 0.5 cm 3 had faster blood flow, 21.1 ± 8.4 SD ml/(100 g·min) ( n = 27), than large tumors of greater than 1.0 cm 3 , 9.4 ± 2.9 SD ml/(100 g·min) ( n = 13). (
  • Good agreement with previous in situ photon activation H 2 15 O flow determinations was observed. (
  • Determination requires the use of a fluorescence-activated flow cytometer. (
  • Our results indicated that the portal vein and the hepatic artery supplied blood flow to the PVTT in rabbits. (
  • Clinical Hemorheology and Microcirculation , a peer-reviewed international scientific journal, serves as an aid to understanding the flow properties of blood and the relationship to normal and abnormal physiology. (
  • The endeavour of the Editors-in-Chief and publishers of Clinical Hemorheology and Microcirculation is to bring together contributions from those working in various fields related to blood flow all over the world. (
  • This article investigates the influence of surface glass aging, due to prolonged exposure to humid air, and hematocrit level, on the blood capillary rise. (
  • The CBC also measures the hemoglobin content and the packed cell volume ( hematocrit ) of the red blood cells, assesses the size and shape of the red blood cells, and determines the types and percentages of white blood cells. (
  • In addition to counting actual numbers of red cells, white cells, and platelets, the automated cell counters also measure the hemoglobin and calculate the hematocrit and the red blood cell indices (measures of the size and hemoglobin content of the red blood cells). (
  • Also closely tied to the RBC and hemoglobin values is the hematocrit (Hct), which measures the percentage of red blood cells in the total blood volume. (
  • Relative blood volume monitoring (BVM) is based on the concept that the hematocrit increases with UF, relative to the patient's baseline hematocrit. (
  • The determination of different parameters to characterize blood samples, e.g . the viscoelastic phase angle, an aggregation index, a flexibility index, hematocrit and plasma viscosity is described. (
  • A third study "Peripheral Blood Hematocrit is an Inaccurate Index of Red Cell Volume in Critically Ill Subjects," evaluated the relationship between the peripheral Hct and normalized Hct generated by the BVA-100 as an indicator of red blood cell volume status. (
  • These data demonstrate the limitations of the iodinated albumin molecule in measuring plasma volume and in indirectly estimating red blood cell (RBC) volume from the total body hematocrit value and the plasma volume as determined with iodinated I 125 serum albumin. (
  • Jones AR: A device for rapidly deriving the hematocrit of blood centrifuged in ungraduated tubes. (
  • The Blood Infusion Control System of the present invention integrates components of rapid infusion systems with a computer controller designed to synchronize two infusion pumps in a manner that produces a pre-selected patient hematocrit (HCT*) while reporting the patient's estimated blood volume (BVE). (
  • The patient's estimated blood volume is extrapolated from hematocrit changes in response to the fluid and blood infusion. (
  • a controller for controlling the operation of said first and second infusion pumps to regulate the flowrates of said first and second physiologic fluids being propelled by said first and second infusion pumps, said controller synchronizing the flowrate of said first and second infusion pumps to control the total flowrate of said first and second infusion pumps in response to a patient's hematocrit levels and blood volume. (
  • 11. The system of claim 1 further comprising means for estimating blood volume from hematocrit changes in a patient in response to infusion of said first and second physiologic fluids. (
  • Thereby right and left ventricular volume, shape and contraction pattern can be quantitated and used to characterize the performance of the heart as muscle and pump in physical terms. (
  • Direct left ventricular volume was measured through the cardiac cycle with a volumetric chamber connected to a balloon in the ejecting left ventricle. (
  • Provided accurate cross-sectional localization is available, these studies suggest that extremely accurate steady-state left ventricular volume can be determined noninvasively in the ejecting heart from multiple cross-sectional images. (
  • Method for determining the circulating blood volume by introducing a known quantity of foreign substance into the blood and determining its concentration some minutes later when thorough mixing has occurred. (
  • From these two values the blood volume can be calculated by dividing the quantity of injected material by its concentration in the blood at the time of uniform mixing. (
  • A method and device for the continuous real-time monitoring of relative blood volume change, based on registration of blood hemoglobin concentration, during long periods of time, such as dialysis session. (
  • Processed blood volume (PBV) required to obtain a predefined number of stem cells can be estimated from peripheral blood CD34+ cell concentration, body weight, and collection efficiency (CE). (
  • Blood alcohol content ( BAC ), also called blood alcohol concentration , blood ethanol concentration , or blood alcohol level , is most commonly used as a metric of alcohol intoxication for legal or medical purposes. (
  • Blood alcohol concentration is usually expressed as a percentage of ethanol in the blood in units of mass of alcohol per volume of blood or mass of alcohol per mass of blood, depending on the country. (
  • To calculate estimated peak blood alcohol concentration (EBAC), a variation, including drinking period in hours, of the Widmark formula was used. (
  • A complete blood count (CBC) is an extended series of tests to determine such additional factors as the hemoglobin concentration of red blood cells and the amount of platelets in the blood. (
  • Hemoglobin determinations and radioiron assays of the blood were made on several pigs a t 16, 24 and 36 hours postpartum. (
  • In addition to direct effects on the vasculature, estrogen and progesterone or other factors associated with the menstrual cycle affect arterial pressure regulation ( 39 ), temperature regulation ( 5 ), and extracellular fluid volume regulation ( 40 , 45 , 51 ). (
  • STRATUS will evaluate the use of small-volume ("soft-draw") blood collection tubes for laboratory testing in reducing anemia and transfusion in intensive care unit patients without signifi. (
  • A second study, "End Points of Resuscitation: Inaccurate Estimates of Intravascular Volume in Surgical Subjects? (
  • The researchers concluded that "conventional clinical parameters of intravascular volume status and resuscitation completion may not accurately reflect intravascular volume, as determined by blood volume analysis. (
  • A significant positive correlation between posttreatment xi and Hoechst 33342 uptake was obtained (r = 0.83, p = 0.002), providing validation of the MRI-derived measurements of fractional tumor blood volume. (
  • Conclusions: These data clearly highlight the potential of susceptibility contrast MRI with ultrasmall superparamagnetic iron oxide contrast agents to provide quantitative imaging biomarkers of fractional tumor blood volume at high spatial resolution to assess tumor vascular status and response to vascular disrupting agents. (
  • Quantitative whole-brain atlas-based volume-of-interest analysis in conjunction with Pearson correlation and Bland-Altman tests was performed to explore the agreement between C-arm CT PBV and MR-derived CBV and CBF measurements. (
  • Hbmass and blood volume (BV) were measured using the optimized CO-rebreathing technique, VO2max by an incremental test on a treadmill, and LBM by skin-fold measurements. (
  • From the extinction and resistive measurements of the leukocytes, a matrix is developed with cell volumes on the X-axis and extinction on the Y-axis. (
  • There has been considerable discussion concerning the effects of the cerebrospinal fluid on measurements of blood-related parameters in the human brain, and if diffusion-theory-based image reconstruction algorithms can accurately account for the light propagation in the head. (
  • Although the plasma volume measurements obtained with iodinated I 125 serum albumin were accurate in patients with erythrocytosis and in healthy patients, this method overestimated the plasma volume in patients with traumatic injuries, carcinoma, cardiopulmonary disorders, and miscellaneous diagnoses. (
  • In six hearts, 67 separate direct volume measurements (range 9.5--54.7 ml) from various points in the cardiac cycle were compared with the simultaneous echo volume measurements. (
  • There was no rise in blood volume and the elevated MCFP must therefore stem from increased vascular tone, possibly by means of increased sympathetic tone on the veins. (
  • The enhancement pattern of a tumor on conventional MR imaging is not always reliable to obtain precise information about tumor angiogenesis at the capillary level, because tumoral enhancement is mainly due to the disruption of blood-brain barrier (BBB) rather than the tumoral vascular proliferation itself ( 12 , 13 ). (
  • 17. Siggaard-Andersen J, et al: Plasma volume and vascular permeability during hypoxia and carbon monoxide exposure. (
  • Results obtained in 11 controls and 15 vascular disease patients were compared with the results using three established methods (Hemorheometre, whole blood filtration, and filtration of buffy coat depleted cells in prefi1tered plasma). (
  • The comparison of the four techniques showed, that although each was sensitive to different factors, they detected similar differences between controls and vascular disease patients, suggesting complex changes in the properties of the blood, including red cell deformability. (
  • Intravenous administration of Hypertonic saline solution (HSS) induces systemic circulatory changes including blood pressure rising, effective circulating volume increase as well as local effects on microvasculature. (
  • A review of the literature on the subject of blood volume changes following intravenous injections of hypertonic glucose solutions shows that the majority of investigators demonstrated an increase in the volume 12456 . (
  • Blood volume fluctuations determined by radioisotopes of chromium and radioactive iodinated serum albumin. (
  • Blood volume studies with the use of I131 tagged albumin. (
  • Seeing how disease processes, infections, nutrition, and lab test results that indicated blood conditions such as low albumin, low red blood count , and high white count play important roles in wound healing, I learned to look beyond the wound and see the whole resident. (
  • Limitations of Measuring Blood Volume With Iodinated I 125 Serum Albumin Valeri, C.R.;Cooper, A.G.;Pivacek, L.E. 1973-10-01 00:00:00 Abstract Blood volume studies were performed in 18 healthy men and 564 male patients with a variety of clinical diagnoses. (
  • It can provide valuable information about the blood and blood-forming tissues (especially the bone marrow ), as well as other body systems. (
  • One of the most commonly ordered clinical laboratory tests, a blood count , also called a complete blood count (CBC), is a basic evaluation of the cells (red blood cells, white blood cells, and platelets) suspended in the liquid part of the blood (plasma). (
  • A complete blood count is actually a series of tests in which the numbers of red blood cells, white blood cells, and platelets in a given volume of blood are counted. (
  • The platelet count is an actual count of the number of platelets (thrombocytes) in a given volume of blood. (
  • Platelets, the smallest of the cellular elements of blood, are involved in blood clotting . (
  • The heat exchanger and open hard-shell venous reservoir contribute to the total artificial surface and can initiate blood protein denaturation and damage to cellular elements like erythrocytes and platelets [2] . (
  • 21. A method of claim 20 wherein aggregates of cvanine dye-labelled platelets are detected in retinal blood vessels. (
  • Consider a fluid of constant density ρ (mass per unit volume) and dynamic viscosity μ (indicative of the effects of frictional forces/mixing in a fluid), flowing through a system with velocity components u , v , and w in x , y , and z coordinates, respectively. (
  • Secondary outcomes include the number of symptomatic IDH episodes and any reduction in IDH episodes, nursing interventions, dialysis adequacy, total body water, extra- and intracellular fluid volumes, brain natriuretic peptide and cardiac troponin levels, blood pressure, antihypertensive medication use, patient symptoms and quality of life. (
  • To prevent volume overload and maintain fluid balance, 1 to 5 L of fluid must be removed during each HD treatment. (
  • The authors discuss the study regarding the inability of central venous pressure in the evaluation of blood volume status, predicting fluid-responsiveness in a meta-analyis and systematic review of 24 studies. (
  • These new data further substantiate that the BVA-100 is the most accurate means to establish blood volume, and helps guide physicians to effectively determine treatment options to manage fluid derangements and improve patient outcomes," said Michael Feldschuh, CEO of Daxor Corporation. (
  • The normalized Hct has the potential for more accurate diagnosis of anemia and more informed fluid management thus reducing the risks and costs associated with unnecessary blood transfusions," said Michael Feldschuh, CEO of Daxor Corporation. (
  • 2. The system of claim 1 in which said first physiologic fluid is blood. (
  • Distribution of extracellular fluid loss from hemodialysis differed widely among patients, so that weight change correlated weakly with contraction of total blood volume (index of determination 29%, p less than 0.05). (
  • Correction of the excess fluid volume has risen as a potential target therapy to improve SA, by attenuation of nocturnal fluid shift. (
  • This review focuses on the pathophysiology of edema and fluid shift, and summarizes the most relevant findings of studies that investigated the impact of treating volume overload on SA. (
  • Studies on the relationship between volume overload and SA that have included patients with fluid-retaining states. (
  • Blood Volume Determination" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings) . (
  • Organized into 43 chapters, this compilation of papers begins with an overview of the origin of the notion of a vasomotor center controlling the arterial blood pressure. (
  • 90 mm Hg) are still considered to be the best indicators of the need for life-saving interventions, (4-6) even though the unreliability of arterial blood pressure as an indicator of blood loss was recognized as early as World War II. (
  • In 414 patients, contrast volume, presence of diabetes mellitus, use of N-acetylcysteine, mean baseline SCr, and estimated glomerular filtration rate were comparable in the 2 groups. (
  • Principles around accurate blood volume collection using capillary action. (
  • art ' for volume accuracy and precision but dimension of height and radius must be carefully chosen in order to exploit the capillary action behaviour efficiently. (
  • The blood introduction end of the tube is left uncoated to promote capillary action in blood sampling. (
  • To calculate the number of analytical tests and blood volume drawn during the first 24 h of admission to the Intensive Care Unit (ICU). (
  • With Norman Keith of Toronto, Rowntree invented a method to calculate blood and plasma volume using a red dye dilution method. (
  • The degree of dilution is used to calculate total blood volume. (
  • Users of the BVA-100 currently have the option to calculate a multi-point blood volume using as few as three points, for those who want to shorten the time needed to get a result versus five samples. (
  • Although total blood volume (TBV) is central to the estimation of the haemodilution rate during cardiopulmonary bypass (CPB), conventional formulas lack sufficient accuracy. (
  • We examined whether such serial images from steady-state ejecting hearts would allow three-dimensional reconstruction and accurate volume estimation without major geometric assumptions. (
  • This process is crucial for many biological structures, such as blood vessels, to develop correctly, and is also a key part of our senses of touch and hearing. (
  • Red blood cells experience significant forces when they pass through narrow blood vessels. (
  • Further, rates at which cells pass through vessels is used to determine blood vessel patency and platelet aggregation. (
  • This study aimed to investigate the anatomic configuration of the blood vessels that contribute to portal vein tumor thrombus (PVTT), a common complication of hepatocellular carcinoma, in VX2 rabbits. (
  • The rapidly expanding science of hemorheology concerns blood, its components and the blood vessels with which blood interacts. (
  • Stochastic model based on preharvest peripheral CD34-positive cell count and collection efficiency predicting processed blood volume in peripheral hematopoietic stem cell apheresis. (
  • Advances in Physiological Sciences, Volume 8: Cardiovascular Physiology: Heart, Peripheral Circulation and Methodology presents the proceedings of the 28th International Congress of Physiological Sciences, held in Budapest, Hungary, on July 13-19, 1980. (
  • one of the formed elements in the peripheral blood , constituting the great majority of the cells in the blood. (
  • Peripheral blood mononuclear cells (MNCs) were isolated and labeled using superparamagnetic iron oxide particles in vitro. (
  • A radioactive substance, usually chromium, is used to "tag" cells of a sample of blood drawn from the patient. (
  • The best method was by determining red blood cell volume with radioactive chromium (51Cr)-labeled RBC, and estimating plasma volume. (
  • The anaesthetized snakes exhibited the archetypal tachycardia as well as a rise in both venous pressure and MCFP that fully account for the approximate doubling of stroke volume. (
  • Furthermore, although both venous pressure and MCFP increased during volume loading, there was no evidence that postprandial hearts were endowed with an additional capacity to elevate stroke volume. (
  • We specifically address the possibility that increased postprandial V S is due to an increase in cardiac filling, caused by a higher MCFP in digesting snakes, and whether this elevation is due to an increase of venous tone or a rise in blood volume. (
  • Following standard cannulation, the negative pressure generated by the centrifugal pump actively drains venous blood. (
  • The negative pressure in the venous line enables left ventricular (LV) venting and addition of prime, blood and other fluids. (
  • The reservoir bag is connected to the venous as well as the arterial line and when needed, the stored blood may be reinfused into the venous line. (
  • Does central venous pressure or pulmonary capillary wedge pressure reflect the status of circulating blood volume in patients after extended transthoracic esophagectomy? (
  • Discusses a study which investigated whether central venous pressure or pulmonary capillary wedge pressure can accurately reflect the status of circulating blood volume (CBV) during the perioperative period in adult patients after extended transthoracic esophagectomy. (
  • In hepatic surgery, volume load must be strictly monitored to assure both a safe hemodynamics and low central venous pressure (CVP) to limit the backflow bleeding. (
  • compared blood volume analysis to conventional indices of euvolemia (BP, heart rate, urinary output) and/or endpoints of resuscitation (clearance of lactate, minimal/no vasopressors, or mixed venous oxygen saturation) to determine if euvolemia is achieved after multiple blood transfusions. (
  • This subject invention is a sample data control system that rapidly dispenses crystalloid/colloid fluids and red blood cells by venous infusion in a manner that 1) achieves HCT* in the patient and 2) reports the patient's BV E . BICS could enhance the ability of clinical teams in operating rooms and trauma receiving areas to stabilize patients suffering cardiovascular deterioration from acute blood loss. (
  • A brief outline of the background of viscoelasticity of blood is given in order to derive for blood relevant parameters. (
  • The study showed a statistically significant mean bias between the two parameters and the researchers concluded that "the normalized Hct may be a better indicator of RBCV compared to the Hct, as it takes into account deviations in plasma volume. (
  • Each cell is then measured both in optical extinction (internal structure) and resistivity (volume) which allows total nucleated cells count and differential count of lymphocytes, monocytes, neutrophils, eosinophils, atypical lymphocytes, immature populations and erythroblasts. (
  • Erythroblasts are immature red blood cells with a nucleus. (
  • Capillary tubes of the double open-ended type used for blood collection and examination are provided over a portion of their internal surfaces with a dry coating of a reagent, e.g., a colorant for staining blood cells, a phagocytic substance for examining phagocytosis of leucocyte, etc. (
  • Primary Examinerl(yle L. Howell Attorney, Agent, or FirmKemon, Palmer and Estabrook [5 7] ABSTRACT Capillary tubes of the double open-ended type used for blood collection and examination are provided over a portion of their internal surfaces with a dry coating of a reagent, e.g., a colorant for staining blood cells, a phagocytic substance for examining phagocytosis of leucocyte, etc. (
  • a 1 CAPILLARY TUBE FOR BLOOD EXAMINATION This invention relates to a capillary tube for use in staining cells and bacteria for observation and in a phagocytosis test of blood corpuscles or leucocyte. (
  • neutral red pinacyanol+ neutral red Various methods for staining cells such as blood corpuscles etc. have been known. (
  • It involves determining the numbers, concentrations, and conditions of the different types of blood cells. (
  • Most laboratories routinely use some type of automated equipment to dilute the blood, sample a measured volume of the diluted suspension, and count the cells in that volume. (
  • Technologists then examine a stained blood smear under the microscope to identify any abnormalities in the appearance of the red blood cells and to report the types and percentages of white blood cells observed. (
  • The red blood cell (RBC) count determines the total number of red cells (erythrocytes) in a sample of blood. (
  • Hemoglobin (Hgb) is the protein-iron compound in the red blood cells that enables them to transport oxygen. (
  • Red blood cell indices provide information about the size and hemoglobin content of the red cells. (
  • The white blood cell (WBC) count determines the total number of white cells (leukocytes) in the blood sample. (
  • A differential white cell count is done by staining a smear of the patient's blood with a Wright's stain, allowing the different types of white cells to be clearly seen under the microscope. (
  • A technologist then counts a minimum of 100 WBCs and reports each type of white cell as a percentage of the total white blood cells counted. (
  • Red blood cells (RBCs) experience significant mechanical forces while recirculating, but the consequences of these forces are not fully understood. (
  • In a disease called xerocytosis, the red blood cells become severely dehydrated and shrink. (
  • This suggested that Piezo1 may regulate the volume of red blood cells. (
  • including some of the researchers who worked on the 2010 and 2013 studies-have now investigated the role of Piezo1 in red blood cells in more detail. (
  • Applying strong forces to red blood cells from mice caused calcium to rapidly enter cells through Piezo1 channels. (
  • then deleted the Piezo1 gene from red blood cells. (
  • Mammalian red blood cells (RBCs) are rather unique in that they lack a nucleus and many organelles and that they traverse the circulatory system several hundred thousand times in their life cycle. (
  • Erythrocytes are stored in the spleen, which acts as a reservoir for the blood system and discharges the cells into the blood as required. (
  • About 180 million red blood cells are destroyed every minute. (
  • Since the number of cells in the blood remains more or less constant, this means that about 180 million red blood cells are manufactured every minute. (
  • 16. A method of claim 1 wherein the cyanine dye-labelled cells are red blood cells. (
  • 17. A method of claim 16 wherein the subject's retina is examined for presence of cyanine dye-labelled red blood cells to detect retinopathv or blood vessel degeneration. (
  • method for determining the number of red (erythrocytes) and white (leukocytes) blood cells in a certain volume of blood. (
  • Leukemia, for instance, causes an increase in the white blood cell count, while a decrease in the number of red blood cells is associated with anemia. (
  • A determination of the percentage of various types of white blood cells (neutrophils, lymphocytes, eosinophils, basophils, and monocytes) is called a differential blood count. (
  • Determination of the number of white and red blood cells in a definite volume of blood. (
  • Button ML, Gibson JG II, Walter CW: Simultaneous determination of the volume of red cells and plasma for survival studies of stored blood. (
  • in red blood cells. (
  • Using the invented methods, for example, red blood. (
  • Using the invented methods, for example, red blood cell and platelet lifetimes are determined. (
  • The methods used for labeling the blood with radioiron, for freezing the newborn and for comparing the blood volume of the breathing and nonbreathing littermates were the same as in the previous study, Everett ('52). (
  • Novel method for estimating the total blood volume: the importance of adjustment using the ideal body weight and age for the accurate prediction of haemodilution during cardiopulmonary bypass. (
  • electrocardiographic examinations were made on 33 and plasma and total blood volume determinations, on 25 of these subjects. (
  • A significant correlation was found between total blood volume (TBV) and EDV before (r = 0.66, p less than 0.005) and after dialysis (r = 0.61, p less than 0.001). (
  • There is an Inside Blood Commentary on this article in this issue. (
  • Update: Recommendations for human blood pressure determination by sphygmomanometers. (
  • One study, "Reducing Blood Sampling for Circulating Blood Volume Determination: A Pilot Feasibility," showed a 97% agreement in critically-ill cohorts whose blood volumes were compared using one blood draw versus five blood draws. (
  • Briefly, 287 lambs were characterized through fecal egg counts (FEC) and packed cell volume (PCV) after two independent experimental parasitic challenges with 4,000 H. contortus L 3 . (
  • Two characteristics for each cell passing through this system are determined: volume and optical light extinction. (
  • Ashby , W.: The span of life of the red blood cell. (
  • The red blood cell distribution width (RDW) is an indication of the variation in RBC size. (
  • Mean corpuscular hemoglobin (MCH) measures the average amount (weight) of hemoglobin within a red blood cell. (
  • The level of parasitaemia, body weight, packed cell volume, differential leukocyte counts and mean survival period were monitored. (
  • Shed blood is retransfused via a cell saver. (
  • Furthermore, RBCs from blood-cell-specific Piezo1 conditional knockout mice are overhydrated and exhibit increased fragility both in vitro and in vivo. (
  • This work raises the possibility that Piezo proteins are involved in other diseases where red blood cell volume is altered. (
  • Altered DNA methylation at various CpG sites was associated with exposure to mercury, lead or BPA, providing candidates to be investigated using a larger study sample, as the results may reflect an independently associated predictor (e.g. socioeconomic status, diet, genetic variants, altered blood cell composition). (
  • Called also red cell or corpuscle and red blood cell or corpuscle . (
  • Nucleated red blood cell (RBC) precursors stimulated by erythropoietin form erythrocytes in the bone marrow. (
  • blood cell survival). (
  • There was no statistically significant difference between parasited and non-parasited specimens regarding total plasma protein, packed cell volume and body weight, which strongly suggests that these specimens might be parasite reservoirs. (
  • This work focused on the presence of blood parasites in blood smears of small wild mammals from tropical mountain ranges, regarding the packed cell volume (PCV), the total plasma protein (TPP) and the body weight, determining a possible epidemiological link of important blood parasitoses in domestic and wild animals and men. (
  • At WQ 202, the caption was changed from Diagnosis to Pregnancy determination . (
  • This method is" important in the diagnosis of blood disease staining method, it is conventional to also stain reticulocytes, mitochondria and intracellar granula. (
  • A constant pressure head (200 Pa) technique is described for measuring blood filtration rate at 23 µl intervals using optical detection of the liquid meniscus. (
  • This unit describes various protocols for the in vivo quantitation of drug permeability across the rodent blood ‐ brain barrier. (
  • After HSS injection, relative blood volume was increased in B16F10 (p=0,022) and HCT-116 (p=0,039) but not on MDA-MB-231 (p=0,186). (
  • Twenty-six relative blood volume determinations were made 8 . (
  • The use of BVM biofeedback, whereby the HD machine automatically adjusts the rate of UF based on the relative blood volume, has been proposed for the prevention of IDH. (
  • 11. The method of claim 10, further comprising introducing an indicator into the blood system upstream of the optical sensor. (
  • The staining of a blood smear preparation is effected using generally a May-Giemsa staining method. (
  • Experiments using the … new method suggested a time and pressure dependent reversible clogging-unclogging process during filtration, which was a significant determinant of the filtration rate even at low leucocyte concentrations (0.1 × 109 /l) and low filtered volumes (100 µl). (
  • Disclosed is a method for testing a modified specimen such as a dried blood spot, plasma or serum specimen, for an analyte of interest, such as cholesterol. (
  • To accommodate the pronounced metabolic response to digestion, pythons increase heart rate and elevate stroke volume, where the latter has been ascribed to a massive and fast cardiac hypertrophy. (
  • stroke volume (SV) decreased from 108 +/- 36 to 86 +/- 33 ml (p less than 0.001) without change in ejection fraction (from 0.73 +/- 0.09 to 0.74 +/- 0.11). (
  • 2. The apparatus of claim 1, further comprising means for introducing an indicator into the blood system upstream of the optical sensor. (
  • Validation of a New Small-Volume Sodium Citrate Collection Tube for Coagulation Testing in Critically Ill Patients with Coagulopathy. (
  • Blood loss due to phlebotomy leads to hospital-acquired anemia and more frequent blood transfusions that may be associated with increased risk of morbidity and mortality in critically ill patients. (
  • In 2013, researchers discovered that patients with this disease have mutations in the gene that codes for the Piezo1 protein: a Piezo protein that has also been linked to a role in blood vessel development in embryos. (
  • If fever with shivering persists for more than three days, patients must refer to a qualified general practitioner who may advise blood tests to assess blood count ,' they said. (
  • Even after resuscitation, blood volume analysis showed euvolemia was only achieved in 30% of the patients. (
  • Effects of BMI on static lung volumes in patients with airway obstruction. (
  • The design methodology represents a blood infusion device that can rapidly deliver filtered, bubble free, warmed volumes to patients with significant hypovolemia. (
  • The direct contact of the patient's blood with the foreign surface of the cardiopulmonary bypass (CPB) circuit plays an important role in triggering this response [1] . (
  • Our hypothesis is that a decrease in variability of tidal breathing (evaluated by the coefficient of variation of Tidal volume: CVTV) (which traduces a physiological response to the increased work of breathing) associated with a decrease in the frequency of deep inhalations (FDI) (physiological sighs). (
  • 1 They aimed to reach "supra-normal" hemodynamic values via the liberal use of fluids, blood products, and inotropic agents. (
  • Increase interval training intensity improves plasma volume variations and aerobic performances in response to intermittent exercise. (
  • Jeanotope I-125 is indicated for use in the determination of total blood and plasma volume. (