Residual volume. Medical search

The volume of air remaining in the LUNGS at the end of a maximal expiration. Common abbreviation is RV.

The volume of air contained in the lungs at the end of a maximal inspiration. It is the equivalent to each of the following sums: VITAL CAPACITY plus RESIDUAL VOLUME; INSPIRATORY CAPACITY plus FUNCTIONAL RESIDUAL CAPACITY; TIDAL VOLUME plus INSPIRATORY RESERVE VOLUME plus functional residual capacity; or tidal volume plus inspiratory reserve volume plus EXPIRATORY RESERVE VOLUME plus residual volume.

Measurement of the amount of air that the lungs may contain at various points in the respiratory cycle.

The volume of air remaining in the LUNGS at the end of a normal, quiet expiration. It is the sum of the RESIDUAL VOLUME and the EXPIRATORY RESERVE VOLUME. Common abbreviation is FRC.

Recording of change in the size of a part as modified by the circulation in it.

The volume of air that is exhaled by a maximal expiration following a maximal inspiration.

Enlargement of air spaces distal to the TERMINAL BRONCHIOLES where gas-exchange normally takes place. This is usually due to destruction of the alveolar wall. Pulmonary emphysema can be classified by the location and distribution of the lesions.

Measurement of the various processes involved in the act of respiration: inspiration, expiration, oxygen and carbon dioxide exchange, lung volume and compliance, etc.

Measure of the maximum amount of air that can be expelled in a given number of seconds during a FORCED VITAL CAPACITY determination . It is usually given as FEV followed by a subscript indicating the number of seconds over which the measurement is made, although it is sometimes given as a percentage of forced vital capacity.

Either of the pair of organs occupying the cavity of the thorax that effect the aeration of the blood.

Measurement of the volume of gas in the lungs, including that which is trapped in poorly communicating air spaces. It is of particular use in chronic obstructive pulmonary disease and emphysema. (Segen, Dictionary of Modern Medicine, 1992)

Inhaling liquid or solids, such as stomach contents, into the RESPIRATORY TRACT. When this causes severe lung damage, it is called ASPIRATION PNEUMONIA.

A process whereby bile is delivered from the gallbladder into the duodenum. The emptying is caused by both contraction of the gallbladder and relaxation of the sphincter mechanism at the choledochal terminus.

Measurement of volume of air inhaled or exhaled by the lung.

The physical or mechanical action of the LUNGS; DIAPHRAGM; RIBS; and CHEST WALL during respiration. It includes airflow, lung volume, neural and reflex controls, mechanoreceptors, breathing patterns, etc.

Volume of circulating BLOOD. It is the sum of the PLASMA VOLUME and ERYTHROCYTE VOLUME.

The amount of a gas taken up, by the pulmonary capillary blood from the alveolar gas, per minute per unit of average pressure of the gradient of the gas across the BLOOD-AIR BARRIER.

The mechanical laws of fluid dynamics as they apply to urine transport.

Nutritional support given via the alimentary canal or any route connected to the gastrointestinal system (i.e., the enteral route). This includes oral feeding, sip feeding, and tube feeding using nasogastric, gastrostomy, and jejunostomy tubes.

Discharge of URINE, liquid waste processed by the KIDNEY, from the body.

The evacuation of food from the stomach into the duodenum.

The insertion of a tube into the stomach, intestines, or other portion of the gastrointestinal tract to allow for the passage of food products, etc.

The capability of the LUNGS to distend under pressure as measured by pulmonary volume change per unit pressure change. While not a complete description of the pressure-volume properties of the lung, it is nevertheless useful in practice as a measure of the comparative stiffness of the lung. (From Best & Taylor's Physiological Basis of Medical Practice, 12th ed, p562)

Remnant of a tumor or cancer after primary, potentially curative therapy. (Dr. Daniel Masys, written communication)

Inability to empty the URINARY BLADDER with voiding (URINATION).

The excision of lung tissue including partial or total lung lobectomy.

The extra volume of air that can be expired with maximum effort beyond the level reached at the end of a normal, quiet expiration. Common abbreviation is ERV.

The act of BREATHING in.

Agents causing the narrowing of the lumen of a bronchus or bronchiole.

The contents included in all or any segment of the GASTROINTESTINAL TRACT.

A musculomembranous sac along the URINARY TRACT. URINE flows from the KIDNEYS into the bladder via the ureters (URETER), and is held there until URINATION.

A pathological accumulation of air in tissues or organs.

Impaired venous blood flow or venous return (venous stasis), usually caused by inadequate venous valves. Venous insufficiency often occurs in the legs, and is associated with EDEMA and sometimes with VENOUS STASIS ULCERS at the ankle.

The musculofibrous partition that separates the THORACIC CAVITY from the ABDOMINAL CAVITY. Contraction of the diaphragm increases the volume of the thoracic cavity aiding INHALATION.

Pathological processes of the URINARY BLADDER.

A type of stress exerted uniformly in all directions. Its measure is the force exerted per unit area. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)

The airflow rate measured during the first liter expired after the first 200 ml have been exhausted during a FORCED VITAL CAPACITY determination. Common abbreviations are MEFR, FEF 200-1200, and FEF 0.2-1.2.

These include the muscles of the DIAPHRAGM and the INTERCOSTAL MUSCLES.

Difficult or labored breathing.

A disease of chronic diffuse irreversible airflow obstruction. Subcategories of COPD include CHRONIC BRONCHITIS and PULMONARY EMPHYSEMA.

Helium. A noble gas with the atomic symbol He, atomic number 2, and atomic weight 4.003. It is a colorless, odorless, tasteless gas that is not combustible and does not support combustion. It was first detected in the sun and is now obtained from natural gas. Medically it is used as a diluent for other gases, being especially useful with oxygen in the treatment of certain cases of respiratory obstruction, and as a vehicle for general anesthetics. (Dorland, 27th ed)

Abnormalities in the process of URINE voiding, including bladder control, frequency of URINATION, as well as the volume and composition of URINE.

Any disorder marked by obstruction of conducting airways of the lung. AIRWAY OBSTRUCTION may be acute, chronic, intermittent, or persistent.

The total volume of gas inspired or expired per unit of time, usually measured in liters per minute.

Elements of limited time intervals, contributing to particular results or situations.

Physiological processes and properties of the RESPIRATORY SYSTEM as a whole or of any of its parts.

The rate of airflow measured during a FORCED VITAL CAPACITY determination.

Physiologically, the opposition to flow of air caused by the forces of friction. As a part of pulmonary function testing, it is the ratio of driving pressure to the rate of air flow.

A quaternary ammonium parasympathomimetic agent with the muscarinic actions of ACETYLCHOLINE. It is hydrolyzed by ACETYLCHOLINESTERASE at a considerably slower rate than ACETYLCHOLINE and is more resistant to hydrolysis by nonspecific CHOLINESTERASES so that its actions are more prolonged. It is used as a parasympathomimetic bronchoconstrictor agent and as a diagnostic aid for bronchial asthma. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1116)

Evaluation undertaken to assess the results or consequences of management and procedures used in combating disease in order to determine the efficacy, effectiveness, safety, and practicability of these interventions in individual cases or series.

Blocked urine flow through the bladder neck, the narrow internal urethral opening at the base of the URINARY BLADDER. Narrowing or strictures of the URETHRA can be congenital or acquired. It is often observed in males with enlarged PROSTATE glands.

Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group.

Any hindrance to the passage of air into and out of the lungs.

Increase in constituent cells in the PROSTATE, leading to enlargement of the organ (hypertrophy) and adverse impact on the lower urinary tract function. This can be caused by increased rate of cell proliferation, reduced rate of cell death, or both.

The act of breathing with the LUNGS, consisting of INHALATION, or the taking into the lungs of the ambient air, and of EXHALATION, or the expelling of the modified air which contains more CARBON DIOXIDE than the air taken in (Blakiston's Gould Medical Dictionary, 4th ed.). This does not include tissue respiration (= OXYGEN CONSUMPTION) or cell respiration (= CELL RESPIRATION).

Tomography using x-ray transmission and a computer algorithm to reconstruct the image.

Volume of PLASMA in the circulation. It is usually measured by INDICATOR DILUTION TECHNIQUES.

A tube that transports URINE from the URINARY BLADDER to the outside of the body in both the sexes. It also has a reproductive function in the male by providing a passage for SPERM.

A disease or state in which death is possible or imminent.

Agents that cause an increase in the expansion of a bronchus or bronchial tubes.

The amount of BLOOD pumped out of the HEART per beat, not to be confused with cardiac output (volume/time). It is calculated as the difference between the end-diastolic volume and the end-systolic volume.

Devices that cause a liquid or solid to be converted into an aerosol (spray) or a vapor. It is used in drug administration by inhalation, humidification of ambient air, and in certain analytical instruments.

Endoscopic examination, therapy or surgery of the bronchi.

Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease.

The statistical reproducibility of measurements (often in a clinical context), including the testing of instrumentation or techniques to obtain reproducible results. The concept includes reproducibility of physiological measurements, which may be used to develop rules to assess probability or prognosis, or response to a stimulus; reproducibility of occurrence of a condition; and reproducibility of experimental results.

Colloids with a gaseous dispersing phase and either liquid (fog) or solid (smoke) dispersed phase; used in fumigation or in inhalation therapy; may contain propellant agents.

A class of statistical methods applicable to a large set of probability distributions used to test for correlation, location, independence, etc. In most nonparametric statistical tests, the original scores or observations are replaced by another variable containing less information. An important class of nonparametric tests employs the ordinal properties of the data. Another class of tests uses information about whether an observation is above or below some fixed value such as the median, and a third class is based on the frequency of the occurrence of runs in the data. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed, p1284; Corsini, Concise Encyclopedia of Psychology, 1987, p764-5)

Any method of artificial breathing that employs mechanical or non-mechanical means to force the air into and out of the lungs. Artificial respiration or ventilation is used in individuals who have stopped breathing or have RESPIRATORY INSUFFICIENCY to increase their intake of oxygen (O2) and excretion of carbon dioxide (CO2).

The range or frequency distribution of a measurement in a population (of organisms, organs or things) that has not been selected for the presence of disease or abnormality.

Levels within a diagnostic group which are established by various measurement criteria applied to the seriousness of a patient's disorder.

A form of bronchial disorder with three distinct components: airway hyper-responsiveness (RESPIRATORY HYPERSENSITIVITY), airway INFLAMMATION, and intermittent AIRWAY OBSTRUCTION. It is characterized by spasmodic contraction of airway smooth muscle, WHEEZING, and dyspnea (DYSPNEA, PAROXYSMAL).

Volume of circulating ERYTHROCYTES . It is usually measured by RADIOISOTOPE DILUTION TECHNIQUE.

Pathological processes involving any part of the LUNG.

The administration of drugs by the respiratory route. It includes insufflation into the respiratory tract.

A statistical technique that isolates and assesses the contributions of categorical independent variables to variation in the mean of a continuous dependent variable.

Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons.

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.

Non-invasive method of demonstrating internal anatomy based on the principle that atomic nuclei in a strong magnetic field absorb pulses of radiofrequency energy and emit them as radiowaves which can be reconstructed into computerized images. The concept includes proton spin tomographic techniques.

Studies comparing two or more treatments or interventions in which the subjects or patients, upon completion of the course of one treatment, are switched to another. In the case of two treatments, A and B, half the subjects are randomly allocated to receive these in the order A, B and half to receive them in the order B, A. A criticism of this design is that effects of the first treatment may carry over into the period when the second is given. (Last, A Dictionary of Epidemiology, 2d ed)

An element with atomic symbol O, atomic number 8, and atomic weight [15.99903; 15.99977]. It is the most abundant element on earth and essential for respiration.

A method of studying a drug or procedure in which both the subjects and investigators are kept unaware of who is actually getting which specific treatment.

Controlled physical activity which is performed in order to allow assessment of physiological functions, particularly cardiovascular and pulmonary, but also aerobic capacity. Maximal (most intense) exercise is usually required but submaximal exercise is also used.

Diseases which have one or more of the following characteristics: they are permanent, leave residual disability, are caused by nonreversible pathological alteration, require special training of the patient for rehabilitation, or may be expected to require a long period of supervision, observation, or care. (Dictionary of Health Services Management, 2d ed)

The process of generating three-dimensional images by electronic, photographic, or other methods. For example, three-dimensional images can be generated by assembling multiple tomographic images with the aid of a computer, while photographic 3-D images (HOLOGRAPHY) can be made by exposing film to the interference pattern created when two laser light sources shine on an object.

Inhaling and exhaling the smoke of burning TOBACCO.

The measurement of an organ in volume, mass, or heaviness.

Expiratory and inspiratory chest computed tomography and pulmonary function tests in cigarette smokers. (1/118)

This study evaluated small airway dysfunction and emphysematous destruction of lung parenchyma in cigarette smokers, using chest expiratory high-resolution computed tomography (HRCT) and pulmonary function tests (PFT). The degree of emphysematous destruction was classified by visual scoring (VS) and the average HRCT number at full expiration/full inspiration (E/I ratio) calculated in 63 male smokers and 10 male nonsmokers (group A). The Brinkman smoking index (BI), defined as cigarettes x day(-1) x yrs, was estimated. Sixty-three smokers were divided into three groups by PFT: group B1 (n=7), with normal PFT; group B2 (n=21), with diffusing capacity of the lung for carbon monoxide (DL,CO) > or = 80% predicted, forced expiratory volume in one second (FEV1) < 80% pred and/or residual volume (RV) > 120% pred; and group B3 (n=35), with DL,CO < 80% pred, FEV1 < 80% pred and/or RV > 120% pred. Heavy smokers (BI > or = 600) (n=48) showed a significant increase in emphysema by both VS and E/I. E/I was significantly elevated in both group B2 (mean+/-SD 0.95+/-0.05) and B3 (0.96+/-0.06) compared with group B1 (0.89+/-0.03). VS could not differentiate group B2 (3.9+/-5.0) from B1 (1.1+/-1.6). These findings suggest that the expiration/inspiration ratio reflects hyperinflation and airway obstruction, regardless of the functional characteristics of emphysema, in cigarette smokers. (+info)

Subcellular adaptation of the human diaphragm in chronic obstructive pulmonary disease. (2/118)

Pulmonary hyperinflation impairs the function of the diaphragm in patients with chronic obstructive pulmonary disease (COPD). However, it has been recently demonstrated that the muscle can counterbalance this deleterious effect, remodelling its structure (i.e. changing the proportion of different types of fibres). The aim of this study was to investigate whether the functional impairment present in COPD patients can be associated with structural subcellular changes of the diaphragm. Twenty individuals (60+/-9 yrs, 11 COPD patients and 9 subjects with normal spirometry) undergoing thoracotomy were included. Nutritional status and respiratory function were evaluated prior to surgery. Then, small samples of the costal diaphragm were obtained and processed for electron microscopy analysis. COPD patients showed a mean forced expiratory volume in one second (FEV1) of 60+/-9% predicted, a higher concentration of mitochondria (n(mit)) in their diaphragm than controls (0.62+/-0.16 versus 0.46+/-0.16 mitochondrial transections (mt) x microm(-2), p<0.05). On the other hand, subjects with air trapping (residual volume (RV)/total lung capacity (TLC) >37%) disclosed not only a higher n(mit) (0.63+/-0.17 versus 0.43+/-0.07 mt x microm(-2), p<0.05) but shorter sarcomeres (L(sar)) than subjects without this functional abnormality (2.08+/-0.16 to 2.27+/-0.15 microm, p<0.05). Glycogen stores were similar in COPD and controls. The severity of airways obstruction (i.e. FEV1) was associated with n(mit) (r=-0.555, p=0.01), while the amount of air trapping (i.e. RV/TLC) was found to correlate with both n(mit) (r=0.631, p=0.005) and L(sar) (r=-0.526, p<0.05). Finally, maximal inspiratory pressure (PI,max) inversely correlated with n(mit) (r=-0.547, p=0.01). In conclusion, impairment in lung function occurring in patients with chronic obstructive pulmonary disease is associated with subcellular changes in their diaphragm, namely a shortening in the length of sarcomeres and an increase in the concentration of mitochondria. These changes form a part of muscle remodelling, probably contributing to a better functional muscle behaviour. (+info)

Long-term recovery of diaphragm strength in neuralgic amyotrophy. (3/118)

Diaphragm paralysis is a recognized complication of neuralgic amyotrophy that causes severe dyspnoea. Although recovery of strength in the arm muscles, when affected, is common, there are little data on recovery of diaphragm function. This study, therefore, re-assessed diaphragm strength in cases of bilateral diaphragm paralysis due to neuralgic amyotrophy that had previously been diagnosed at the authors institutions. Fourteen patients were recalled between 2 and 11 yrs after the original diagnosis. Respiratory muscle and diaphragm strength were measured by volitional manoeuvres as maximal inspiratory pressure and sniff transdiaphragmatic pressure. Cervical magnetic phrenic nerve stimulation was used to give a nonvolitional measure of diaphragm strength: twitch transdiaphragmatic pressure. Only two patients remained severely breathless. Ten of the 14 patients had evidence of some recovery of diaphragm strength, in seven cases to within 50% of the lower limit of normal. The rate of recovery was variable: one patient had some recovery after 2 yrs, and the rest took 3 yrs or more. In conclusion, in most patients with diaphragm paralysis due to neuralgic amyotrophy, some recovery of the diaphragm strength occurs, but the rate of recovery may be slow. (+info)

Human lung volumes and the mechanisms that set them. (4/118)

Definitions of human lung volumes and the mechanisms that set them are reviewed in the context of pulmonary function testing, with attention to the distinction between functional residual capacity (FRC) and the static relaxation volume of the respiratory system, and to the circumstances in which FRC and residual volume are set by dynamic rather than by static mechanisms. Related terms, conventions, and issues are addressed, including some common semantic and conceptual difficulties, with attention to "gas trapping", "hyperinflation", and "restriction". (+info)

Differential lung mechanics are genetically determined in inbred murine strains. (5/118)

Genetic determinants of lung structure and function have been demonstrated by differential phenotypes among inbred mice strains. For example, previous studies have reported phenotypic variation in baseline ventilatory measurements of standard inbred murine strains as well as segregant and nonsegregant offspring of C3H/HeJ (C3) and C57BL/6J (B6) progenitors. One purpose of the present study is to test the hypothesis that a genetic basis for differential baseline breathing pattern is due to variation in lung mechanical properties. Quasi-static pressure-volume curves were performed on standard and recombinant inbred strains to explore the interactive role of lung mechanics in determination of functional baseline ventilatory outcomes. At airway pressures between 0 and 30 cmH2O, lung volumes are significantly (P < 0.01) greater in C3 mice relative to the B6 and A/J strains. In addition, the B6C3F1/J offspring demonstrate lung mechanical properties significantly (P < 0.01) different from the C3 progenitor but not distinguishable from the B6 progenitor. With the use of recombinant inbred strains derived from C3 and B6 progenitors, cosegregation analysis between inspiratory timing and measurements of lung volume and compliance indicate that strain differences in baseline breathing pattern and pressure-volume relationships are not genetically associated. Although strain differences in lung volume and compliance between C3 and B6 mice are inheritable, this study supports a dissociation between differential inspiratory time at baseline, a trait linked to a putative genomic region on mouse chromosome 3, and differential lung mechanics among C3 and B6 progenitors and their progeny. (+info)

Airway responsiveness to methacholine: effects of deep inhalations and airway inflammation. (6/118)

We determined the dose-response curves to inhaled methacholine (MCh) in 16 asthmatic and 8 healthy subjects with prohibition of deep inhalations (DIs) and with 5 DIs taken after each MCh dose. Flow was measured on partial expiratory flow-volume curves at an absolute lung volume (plethysmographically determined) equal to 25% of control forced vital capacity (FVC). Airway inflammation was assessed in asthmatic subjects by analysis of induced sputum. Even when DIs were prohibited, the dose of MCh causing a 50% decrease in forced partial flow at 25% of control FVC (PD(50)MCh) was lower in asthmatic than in healthy subjects (P < 0.0001). In healthy but not in asthmatic subjects, repeated DIs significantly decreased the maximum response to MCh [from 90 +/- 4 to 62 +/- 8 (SD) % of control, P < 0.001], increased PD(50)MCh (P < 0.005), without affecting the dose causing 50% of maximal response. In asthmatic subjects, neither PD(50)MCh when DIs were prohibited nor changes in PD(50)MCh induced by DIs were significantly correlated with inflammatory cell numbers or percentages in sputum. We conclude that 1) even when DIs are prohibited, the responsiveness to MCh is greater in asthmatic than in healthy subjects; 2) repeated DIs reduce airway responsiveness in healthy but not in asthmatic subjects; and 3) neither airway hyperresponsiveness nor the inability of DIs to relax constricted airways in asthmatic subjects is related to the presence of inflammatory cells in the airways. (+info)

A novel non-invasive technique for measuring the residual lung volume by nitrogen washout with rapid thoracoabdominal compression in infants. (7/118)

BACKGROUND: The functional residual capacity (FRC), the only lung volume to be routinely measured in infants, is an unreliable volume landmark. In addition to FRC, the residual volume (RV) was measured by nitrogen washout using rapid thoracoabdominal compression (RTC) in nine infants with cystic fibrosis aged 5-31 months. METHODS: A commercial system for nitrogen washout to measure lung volumes and a custom made system to perform RTC were used. Lung volume was raised to an airway opening pressure of 30 cm H(2)O (V(30)). RTC was performed from V(30). The jacket pressure (Pj; 65-92 cm H(2)O) which generated the highest forced expiratory volume (mean 40.2 ml/kg; 95% confidence interval (CI) 33.03 to 47.33) was used during the RV manoeuvre. The infants were manually hyperventilated to inhibit the respiratory drive briefly. RTC was initiated during the last passive expiration. RV was estimated by measuring the volume of nitrogen expired after end forced expiratory switching of the inspired gas from room air to 100% oxygen while jacket inflation was maintained at the time of switching into oxygen during the post-expiratory pause. RESULTS: In each infant RV and FRC measurements were reproducible and did not overlap; the difference between mean values, which is the expiratory reserve volume, was statistically significant (p<0.05). Mean RV was 21.3 (95% CI 18.7 to 24.0), FRC was 25.5 (95% CI 22.8 to 28.1), and TLC(30) (total lung capacity at V(30)) was 61.5 (95% CI 54.4 to 68.7) ml/kg. These values were dependent on body length, weight and age. When measuring RV the period between switching to oxygen and the end of the Pj plateau was 0.301 (95% CI 0.211 to 0.391) s. The washout duration was longer for RV than for FRC measurement (80.9 s (95% CI 71.3 to 90.4) versus 72. 4 s (95% CI 64.9 to 79.8)) (p<0.001). CONCLUSIONS: A new non-invasive and reliable technique for routine measurement of RV in infants is presented. (+info)

Density dependence of forced expiratory flows in healthy infants and toddlers. (8/118)

In older children and adults, density dependence (DD) of forced expiratory flow is present over the majority of the full flow-volume curve. In healthy subjects, DD occurs because the pressure drop from peripheral to central airways is primarily dependent on turbulence and convective acceleration rather than laminar resistance; however, an increase in peripheral resistance reduces DD. We measured DD of forced expiratory flow in 22 healthy infants to evaluate whether infants have low DD. Full forced expiratory maneuvers were obtained while the subjects breathed room air and then a mixture of 80% helium-20% oxygen. Flows at 50 and 75% of expired forced vital capacity (FVC) were measured, and the ratio of helium-oxygen to air flow was calculated (DD at 50 and 75% FVC). The mean (range) of DD at 50 and 75% FVC was 1.37 (1.22-1.54) and 1.23 (1.02-1.65), respectively, values similar to those reported in older children and adults. There were no significant relationships between DD and age. Our results suggest that infants, compared with older children and adults, have similar DD, a finding that suggests that infants do not have a greater ratio of peripheral-to-central airway resistance. (+info)

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The functional residual capacity is equal to the residual volume plus the expiratory reserve volume. (healthncare.info)
Forced expiratory volume (FEV). (rochester.edu)
Purpose: Several reports in the literature have described the effects of positive end-expiratory pressure (PEEP) level upon functional residual capacity (FRC) in ventilated patients during general anesthesia. (elsevier.com)
FRC is the sum of expiratory reserve volume (ERV) and residual volume (RV) and measures approximately 2100 mL in a 70 kg, average-sized male (or approximately 30ml/kg). (wikipedia.org)

Realize that residual lung volume is not your tidal volume. (wikihow.com)
[2] X Research source Tidal volume is the amount of air inhaled or exhaled during normal respiration (breathing), which amounts to about 0.5 L in both men and women. (wikihow.com)
The volume of gas in the lungs at the end of a normal tidal volume exhalation is called functional residual capacity. (healthncare.info)
when tidal volume is precisely measured, as in gas exchange calculation, the symbol TV or V T is used. (wikipedia.org)
the tidal volume is the volume of air that is inhaled or exhaled in only a single such breath. (wikipedia.org)
Minute volume = Tidal volume x resp. (slideshare.net)
PaCO2 ↓ by ↑ tidal volume or ↑ resp. (slideshare.net)
Tidal volume (VT). (rochester.edu)
This study compares FRC in mechanically low tidal volume ventilation with different PEEP levels during upper abdominal surgery. (elsevier.com)
Conclusions: Results suggest that PEEP at 10 cmH 2 O is necessary to maintain lung function if low tidal volume ventilation is used during upper abdominal surgery. (elsevier.com)

[1] X Trustworthy Source PubMed Central Journal archive from the U.S. National Institutes of Health Go to source Residual lung volume represents the amount of air left in your lungs after forced exhalation (breathing out as much as you can). (wikihow.com)
[3] X Research source Instead, the residual volume is the air left in your lungs after a forced exhalation, which indirectly measures the strength of your respiratory muscles (diaphragm, intercostal muscles, etc.) as well as the health of your lung tissues. (wikihow.com)
Functional residual capacity (FRC) refers to the volume of air left in the lungs after a normal, passive exhalation. (healthncare.info)
The retained air (known as functional residual volume) allows the lungs to fill with less effort while keeping the elastic forces of inhalation and exhalation in balance. (healthncare.info)

Know that residual lung volume is not the same as functional residual capacity. (wikihow.com)
When you exhale while breathing normally, the volume of air left in your lungs is called the functional residual capacity, which is NOT your residual volume. (wikihow.com)
Shallow breathing (due to asthma, for example) results in a larger functional residual capacity, whereas a larger residual lung volume is a sign of good fitness and healthy lung tissue. (wikihow.com)
Average functional residual capacity is about 2.3 L of air in men and 1.8 L in women. (wikihow.com)
In contrast, residual lung volume is always lower than functional residual capacity - 1.2 L for men and 1.1 L for women. (wikihow.com)
Reference values for residual volume, functional residual capacity and total lung capacity. (nih.gov)
Learn all about functional residual capacity definition, importance, volume and chronic obstructive pulmonary diseases (COPD). (healthncare.info)
Functional residual capacity (FRC) is the volume of the respiratory system when the respiratory muscles are relaxed and no external forces are applied. (healthncare.info)
The functional residual capacity (FRC), about 2,400 mL, is the amount of air remaining in the lungs after a normal expiration (FRC = RV + ERV). (healthncare.info)
Average functional residual capacity in males is 2.3 litres and in females is 1.8 litres. (healthncare.info)
Functional residual capacity drops 18-20%, [8] typically falling from 1.7 to 1.35 litres, [ citation needed ] due to the compression of the diaphragm by the uterus. (wikipedia.org)
Functional residual capacity (FRC) is the volume of air present in the lungs at the end of passive expiration. (wikipedia.org)
Total lung capacity also increases, largely as a result of increased functional residual capacity. (wikipedia.org)
The helium dilution technique and pulmonary plethysmograph are two common ways of measuring the functional residual capacity of the lungs. (wikipedia.org)
Functional residual capacity is directly proportional to height and indirectly proportional with obesity. (wikipedia.org)

Radiosurgery was performed to deliver doses to the tumor margin of 14, 15, 16, and 20 Gy, depending on tumor volume and proximity to critical adjacent structures. (thejns.org)
After initial treatment, the prognosis is closely correlated with residual tumor volume ( 4 , 5 ). (frontiersin.org)
Despite the lack of class I evidence, it is widely agreed that surgery can improve the functional and vital prognosis for WHO grade II gliomas when the resection is at least subtotal radiologically, that is, leaving less than 10 cm(3) of visible residual tumor. (ox.ac.uk)
For each case, the postoperative image was normalized on a standard atlas, and the residual tumor was segmented. (ox.ac.uk)
To determine whether the residual tumor volume measured using the Eclipse treatment planning system correlates with pathologic tumor regression grade after preoperative chemoradiotherpy for rectal cancer. (elsevier.com)
The tumor volume was measured using the Eclipse treatment planning system in the initial simulation computed tomography and boost planning computed tomography. (elsevier.com)
The correlation between the residual tumor volume in boost planning computed tomography and the pathologic tumor regression grade was analyzed. (elsevier.com)
The mean and median residual tumor volume was 57.34% ± 20.37% and 52.35% (range, 18.42%-95.79%), respectively. (elsevier.com)
Residual tumor volume measured using routine boost planning computed tomography during preoperative chemoradiotherpy correlated significantly with pathologic tumor regression grade after surgery. (elsevier.com)
In this analysis, the authors sought to identify variables triggering an additional resection (AR) and determining residual intraoperative tumor volume in 1.5-T intraoperative MRI (iMRI)-guided glioma resections. (qxmd.com)
The gross tumor volume (GTV) was defined by 4 experienced radiation oncologists first using contrast enhanced CT (GTV CT ) and secondly using the fused 18 F-FDG PET/CT datasets (GTV PET/CT ). (biomedcentral.com)
We compared the gross tumor volume (GTV) defined manually by four experienced radiation oncologists using contrast-enhanced CT and fused 18 F-FDG PET/CT images, as well as the biological target volumes (BTVs) defined on the PET/CT semi-automated delineation technique. (biomedcentral.com)

Men have slightly higher residual lung volumes because they tend to have larger bodies and lungs. (wikihow.com)
Measurement of lung volumes provides a tool for understanding normal function of the lungs as well as disease states. (vernier.com)
Total lung capacity: the volume in the lungs at maximal inflation, the sum of VC and RV. (wikipedia.org)
In this test the residual air in your lungs are measured, after you exhale. (medicalhealthtests.com)
This is the total volume of the lungs when filled with as much air as possible. (rochester.edu)
After tracheal intubation, lungs were ventilated with bilevel airway pressure with a volume guarantee (7 ml/kg predicted body weight) and with an inspired oxygen fraction (FIO 2 ) of 0.4. (elsevier.com)

Renal Function Following Nephron Sparing Procedures: Simply a Matter of Volume? (semanticscholar.org)
S E S S I O N 2: Control volume and residual renal function in peritoneal dialysis patients. (medistream.tv)
Dr.Jörres presenta: 'Control volume and residual renal function in peritoneal dialysis patients. (medistream.tv)

Background and objectives Residual kidney function can be assessed by simply measuring urine volume, calculating GFR using 24-hour urine collection, or estimating GFR using the proposed equation (eGFR). (asnjournals.org)
Conclusions Higher residual urine volume was significantly associated with a lower risk of death and exhibited a stronger association with mortality than GFR calculated using 24-hour urine collection and eGFR-urea, creatinine. (asnjournals.org)
These results suggest that determining residual urine volume may be beneficial to predict patient survival in patients on dialysis. (asnjournals.org)
Methods of estimating residual kidney urea clearance that use commonly available laboratory and clinical data, with or without urine volume information, may be useful tools. (elsevier.com)
Results: Urine volume alone was the strongest predictor of residual kidney urea clearance. (elsevier.com)
Our model that did not use urine volume performed less well (eg, area under the curve, 0.75). (elsevier.com)
Conclusions: Estimation equations for residual kidney urea clearance that use commonly available data in dialysis clinics, with and without urine volume, may be useful tools for evaluation of hemodialysis patients who still have residual kidney function for individualization of dialysis prescriptions. (elsevier.com)

If there is a fluid volume deficit, intake and output measurements can give evidence of fluid imbalance. (thefreedictionary.com)
Undertaking lung volume measurements routinely in all such patients is unrealistic. (bmj.com)
A Model to Predict Residual Volume from Forced Spirometry Measurements. (bmj.com)
Design, setting, participants, & measurements Using the database from a nationwide prospective cohort study, we compared differential implications of the residual kidney function indices in 1946 patients on dialysis at 36 dialysis centers in Korea between August 1, 2008 and December 31, 2014. (asnjournals.org)
ATS Workshop on Lung Volume Measurements. (nih.gov)
Thermal and residual stress profiles are verified against experimental measurements. (asme.org)
Simple urodynamic tests involve performing noninvasive uroflow studies, obtaining a postvoid residual (PVR) urine measurements, and performing single-channel cystometrography (CMG). (medscape.com)

Women with pure stress urinary incontinence symptoms assessed by the initial standard evaluation including measurement of post-void residual volume and a stress test: Are urodynamic studies still needed? (wiley.com)

The goal of this project is a useful clinical instrument for diagnosis and treatment of residual limb volume fluctuation in individuals who use prosthetic limbs. (clinicaltrials.gov)
Background: Objective assessment methods to monitor residual limb volume following lower-limb amputation are required to enhance practitioner-led prosthetic fitting. (bath.ac.uk)
Using different thicknesses of prosthetic socks is a simple way to manage the volume changes that occur throughout the day, making sure that your fit is constantly comfortable. (easyliner.eu)
Should you be unable to manage the variations in residual limb volume just with the use of prosthetic socks, it is advisable to consult your orthopedic technician. (easyliner.eu)
ALPS Skin Reliever is a prosthetic sock made of styrene gel to compensate for the loss of volume in the residual limb. (easyliner.eu)
It is made to be worn directly against the skin of the residual limb, under the prosthetic liner. (easyliner.eu)
GREENBRAE, CA, March 2014 - Orthopedic & Prosthetic Update Vol. 17 - Ask most any amputee the significant challenges to wearing a prosthetic limb, and residual limb volume change (RLVC) is sure to be part of the discussion. (cjsocket.com)
Simply put, changes in the size of the residual limb (stump), whether occurring gradually over time or fluctuating daily in response to lifestyle factors, compound the task of maintaining the secure socket fit essential to prosthetic success. (cjsocket.com)
And as our bodies change over time, so do our demands towards this connections between our residual limb and our prosthetic device. (theactiveamputee.org)

Certain lung volumes can be measured during regular spirometry testing, but calculating residual lung volume requires special techniques. (wikihow.com)
Conclusions Both equations for estimating residual volume%predicted from spirometry data showed good performance vs RV%measured. (bmj.com)
2018). Identifying Patient Suitability for Lung Volume Reduction - Estimation of Gas Trapping from Spirometry. (bmj.com)
It cannot be estimated through spirometry, since it includes the residual volume. (wikipedia.org)

Residual GFR calculated using 24-hour urine collection was determined by an average of renal urea and creatinine clearance on the basis of 24-hour urine collection. (asnjournals.org)

it is about 20 percent of the volume at the end of full inspiration (known as the total lung capacity). (britannica.com)

Postvoid residual bladder volume measurement in sagittal plane. (gynaecologia.com)
Purpose: To investigate whether postvoiding residual bladder volume (PVR) and uroflowmetry parameters associate with bladder sensation in male patients with bladder outlet obstruction (BOO) and to find out the reliable time of these examinations. (erdogan.edu.tr)
Dr. Blaivas also finds that urodynamic tests offer additional useful information such as the relationship among bladder filling, bladder volume and the intensity of urge or pain and whether there is bladder muscle overactivity or the bladder is unable to expand. (ichelp.org)

Another hypothesis to be tested is that when subjects add a sock or insert to the prosthesis residual limb volume decreases, and when they remove the sock or insert residual limb volume increases. (clinicaltrials.gov)
As you can see in some of my hiking videos, the volume of my residual limb decreases over the course of the day. (theactiveamputee.org)
The QD Syringe/Cannula - A new draw cannula designed for greater safety and efficiency - The QD Blunt Plastic Cannula was designed with bilateral channels which completely draws down all medications from rubber stopper vials, reduces the residual volume within its cannula and decreases steps in workflow. (qdsyringe.com)
With the rise of weight and BMI the lung volumes decreases. (news-medical.net)

Determining the volume of residual urine by ultrasonography is a topic covered in the Evidence-Based Medicine Guidelines . (unboundmedicine.com)
Evidence Central , evidence.unboundmedicine.com/evidence/view/EBMG/451682/all/Determining_the_volume_of_residual_urine_by_ultrasonography. (unboundmedicine.com)
Abstract OBJECTIVE:To determine the accuracy of three-dimensional bladder ultrasonography (US, using the BVI 3000, Verathon, WA, USA) for determining the residual urinary volume, compared with the conventional catheterisation method. (plu.mx)

Clinical utility of in-socket residual limb volume change measurement: case study results. (clinicaltrials.gov)
Enter a radical new design, the CJ Socket, which gives the wearer the ability to loosen or tighten socket fit as required for residual limb volume change in seconds. (cjsocket.com)

Treatment should include irrigation using a Foley catheter and an irrigation syringe to remove residual urine and sediment from the neurogenic bladder, intravenous fluid resuscitation, bacteriological analysis of the residual urine, and admission to an Intensive Care Unit for further evaluation by a urologist. (begellhouse.com)
Often, up to another 84 microliters of residual medication are left in the syringe tip and hub after patient delivery, which that potentially up to 168 microliters of expensive medication is wasted. (qdsyringe.com)

Being able to adequately manage volume variations in the residual limb is essential for being able to comfortably and safely wear a prosthesis. (easyliner.eu)
As a consequence, walking becomes harder, I quickly develop sore and open spots on my residual limb and lose my ability to place my foot precisely as the prosthesis becomes increasingly loose. (theactiveamputee.org)
For example, adding limb socks to compensate for lower-limb volume loss requires sitting down, removing the prosthesis, adding several layers of socks, donning the limb again, and restanding. (cjsocket.com)
Rounding out the design is a rigid "J" shaped frame, which covers the remaining half of the residual limb, transfers weight-bearing forces from the prosthesis to the residual limb, and provides skeletal control. (cjsocket.com)

Background Lung hyperinflation associates with adverse outcomes in smokers without airflow obstruction (AFO), and identifies subgroup of COPD patients who may benefit from lung volume reduction procedures. (bmj.com)
There is no realistic way I replace all this liquid while on the trek, further adding to a reduction of stub volume. (theactiveamputee.org)
The purpose of this study is to evaluate the safety and efficacy of the Biologic Lung Volume Reduction System (BLVR) for patients with advanced emphysema refractory to medical therapy. (clinicaltrials.gov)
In recent years, lung volume reduction surgery has become an accepted therapy for advanced emphysema. (clinicaltrials.gov)
Lung volume reduction surgery involves the removal of diseased portions of the lung in order to enable the remaining, healthier portions of the lung to function better. (clinicaltrials.gov)
Aeris Therapeutics has developed the Biologic Lung Volume Reduction (BLVR) System which is intended to achieve lung volume reduction without surgery and its attendant risks. (clinicaltrials.gov)
The first group was taught to use a removable rigid dressing (RRD) while the second group was taught to use an elastic bandage (EB) for stump shaping and volume reduction . (bvsalud.org)
The volume reduction was compared between the two groups. (bvsalud.org)
The stump volume reduction of the RRD group at 2 and 4 weeks were 42.73 +/- 62.70 and 79.9 +/- 103.33 cm3, respectively. (bvsalud.org)
The stump volume reduction of the EB group were 21.89 +/- 118.49 and 83.03 +/- 113.05 cm3, respectively. (bvsalud.org)
There were no statistically significant differences of volume reduction between the two groups at 4 weeks. (bvsalud.org)

The purpose of this report was to review the results of stereotactic radiosurgery in the management of patients with residual neurocytomas after initial resection or biopsy procedures. (thejns.org)
How does the extent of antral resection affect residual gastric volume & EWL? (sages.org)

This finding stresses the importance of complete aneurysm occlusion and of postoperative angiography for the recognition of a residual aneurysm neck. (thejns.org)
The aim of this study is to develop a tool to predict welding residual stresses and distortions in order to understand their governing factors, and thus enabling the optimum fabrication processes to be realized to minimise welding distortion. (asme.org)
Finite element simulations are performed of the butt and fillet welding process in 4 mm thick plates of ferritic DH-36 steel and the residual stresses and distortions are predicted. (asme.org)
Engineering integrity assessments for power plant components need to account for the primary loads that arise during service as well as any residual stresses that may be associated with materials processing or fabrication. (asme.org)
Welding operations come under particular scrutiny because they introduce substantial residual stresses. (asme.org)
In ferritic steels, the prediction of weld residual stresses is particularly challenging, owing to the solid-state phase transformations that occur upon heating and cooling. (asme.org)

The main objective is to establish a statistical predictive model of the risk of intradialytic hypotension during hemodialysis (HD) or hemodiafiltration (HDF) sessions based on the measurement of residual blood volume and excess extracellular hydration. (centerwatch.com)

One hypothesis to be tested is that the instrument effectively measures short and long term volume fluctuations in individuals with trans-tibial amputation. (clinicaltrials.gov)
While the method needs to be tested on human residual limbs and the results compared with the current system used in clinical practice, it has the potential to quantify shape and volume fluctuations with greater resolution. (bath.ac.uk)
And how to deal with fluctuations in the volume of your residual limb - and thus with the fit of your socket. (theactiveamputee.org)
All work to some degree, but none has been shown to be a complete or easy solution to daily volume fluctuations. (cjsocket.com)

Vital capacity: the volume of air breathed out after the deepest inhalation. (wikipedia.org)
in order to meet this requirement, the thoracic diaphragm has a tendency to lower to a greater extent during inhalation, which in turn causes an increase in lung volume. (wikipedia.org)
Some of the other tests to check the lung function include exercise stress tests, inhalation challenge tests, body plethysmography, gas diffusion tests, and residual volume. (medicalhealthtests.com)

Shape percentage maximal error was 2% at the distal end of the residual limb, with intra-rater reliability coefficients presenting the lowest errors (0.2%), both for cross sectional areas and perimeters of the residual limb models.Conclusion: The Artec Eva scanner is a valid and reliable method for assessing residual limb model shapes and volumes. (bath.ac.uk)

The postvoid volume was measured by bladder US, with three readings taken, and then patient was catheterised using a 12-F Nelaton catheter to measure the urinary volume. (plu.mx)
There was no effect of age, gender or body mass index on the accuracy of bladder US, which was accurate even when the urinary volume was ⩽100 mL. (plu.mx)
CONCLUSION:The bladder US estimate is as accurate as catheterisation for determining the postvoid residual urinary volume. (plu.mx)

Evaluation of gastric residual volume in fasting diabetic patients using gastric ultrasound. (bioportfolio.com)
Determination of postvoid residual by translabial ultrasound. (gynaecologia.com)

Despite the fluctuation in my residual limb, the seal keep the vacuum nice and strong. (theactiveamputee.org)

Obtain graphical representation of lung capacities and volumes. (vernier.com)
Lung volumes and lung capacities refer to the volume of air associated with different phases of the respiratory cycle. (wikipedia.org)

5%) of the Artec Eva scanner was calculated for measuring indices of residual limb model volume and shape (i.e. residual limb cross sectional areas and perimeters).Results: Residual limb model volumes ranged from 885 to 4399 ml. (bath.ac.uk)

A new stereo image compression algorithm is described in which the residual image, extracted from the stereo image by the disparity-compensated prediction method, is compressed using the wavelet transform in consideration of the inter and intra correlation between subbands. (spiedigitallibrary.org)

Compare the reducing volumes of the residual limbs between the removable rigid dressing method and the elastic bandaging technique . (bvsalud.org)

In patients with decreased lung volume, both PEEP and CPAP increase FRC and tidal ventilation above closing capacity, improves lung compliance, and correct ventilation/perfusion abnormalities. (healthncare.info)

Additional respiratory muscles in the chest (external intercostals) lift the ribs, expanding them outward and further increasing volume. (vernier.com)

Preoperative estimation of residual volume for WHO grade II glioma resected with intraoperative functional mapping. (ox.ac.uk)
Because these tumors frequently invade functional areas, the preoperative estimation of the probable residual volume remains challenging. (ox.ac.uk)

Tidal volumes increase during deep sleep and with relaxation, but decrease with stress, nervousness and panic attacks. (wikihow.com)
Engineering Applications of Residual Stress represents one of eight volumes of technical papers presented at the Society for Experimental Mechanics Annual Conference & Exposition on Experimental and Applied Mechanics, held at Uncasville, Connecticut, June 13-16, 2011. (springer.com)
Experimental and Applied Mechanics, Thermomechanics and Infra-Red Imaging, and Engineering Applications of Residual Stress. (springer.com)

However, because in his practice, men with IC have bladder neck obstruction more often than women, Dr. Payne may use routine uroflow and postvoid residual studies for better understanding the presentation of pelvic symptoms in some male patients. (ichelp.org)

Diastolic aspiration occurred even with residual volumes of at least 0.55 ml. (ahajournals.org)
Efficient washing with cross-wise aspiration reduces residual volume within each well. (moleculardevices.com)
Is the practice of measuring gastric residual volume (GRV) in mechanically ventilated critically ill patients who are tube fed into the stomach reliable for predicting tolerance, regurgitation and aspiration? (pennutrition.com)

In a few notable exceptions, usually those with a more developed health infrastructure, such as South Africa, a longstanding practice of applying indoor residual spraying (IRS) has been successful ( 3 ). (cdc.gov)
Assessing gastric residual volume: a description of nurses' clinical practice. (bioportfolio.com)
To analyze the differences in nurses' clinical practice for assessing residual gastric volume and identifying the theoretical framework which supports their practice. (bioportfolio.com)
Measuring gastric residual volume (GRV) to guide enteral feeding is a common nursing practice in intensive care units, yet little evidence supports this practice. (uclan.ac.uk)

however, the evidence concerning residual gastric volume in fasting diabetic patients is not consistent. (bioportfolio.com)
The purpose of this study is to determine residual gastric volume and residual gastric pH in patients undergoing combined EGD and colonoscopy comparing the standard single dose prep with t. (bioportfolio.com)
Patients at risk for profound and potentially fatal fluid volume deficit, as in severe burns, should be assessed frequently for mental acuity status and orientation to person, place, and time. (thefreedictionary.com)
We aimed to investigate the relative prognostic value of these residual kidney function parameters in patients on dialysis. (asnjournals.org)
Residual kidney function (RKF) is a crucial predictor of clinical outcomes in patients with ESRD treated with dialysis therapy ( 1 - 10 ). (asnjournals.org)
The mean aspirated volume in 38 (38.8%) patients was 0.9±1.3 mL and sixty patients (61.2%) had no aspirate. (minervamedica.it)
This randomised trial to assess risks associated with returning or discarding gastric residual volume (GRV) to tube-fed patients is similar to one reported in 2000 by Booker and colleagues. (bmj.com)
Residual Parenchymal Volume, Not Warm Ischemia Time, Predicts Ultimate Renal Functional Outcomes in Patients Undergoing Partial Nephrectomy. (semanticscholar.org)
Rationale & Objective: Quantification of residual native kidney function is rarely performed in patients receiving hemodialysis. (elsevier.com)
Setting & Participants: Initial timed urine collections in 604 incident in-center hemodialysis patients on thrice-weekly treatments from a single academic center in which residual kidney urea clearance is measured in usual care. (elsevier.com)
to identify in the literature the recommendations for the verification of gastric residual volume (GVR) in critically ill patients . (bvsalud.org)
F-FDG PET/CT based RT treatment planning was performed in 10 patients with locally recurrent (n = 5) or post-surgical residual gynaecological cancer (n = 5). (biomedcentral.com)
The use of 18 F-FDG PET/CT images for target volume delineation of recurrent or post-surgical residual gynaecological cancer alters the GTV in the majority of patients compared to standard CT-definition. (biomedcentral.com)
Between September 2006 and December 2008, 10 patients with a histologically proven local recurrent (n = 5) or post-surgical residual (n = 5) gynaecological cancer were included. (biomedcentral.com)

Obstruction of ejection at various volumes showed an inverse relationship between residual volume and volume aspirated. (ahajournals.org)
There was an inverse relationship between the extent of the disease on the original chest radiograph and the forced expired volume in one second (FEV1). (nih.gov)

You will correlate lung volumes with a variety of clinical scenarios. (vernier.com)
Correlate lung volumes with clinical conditions. (vernier.com)

Conclusion: The prevalence and amount of residual fluid after oropharyngeal suctioning was low and likely clinically insignificant. (minervamedica.it)

During this test, the patient voids into a uroflowmeter, which measures the volume and speed of urination. (aarp.org)

Conclusion: The findings suggest that feeding preterm infants in the kangaroo mother care position reduces the gastric residual volume, therefore, nurses can feed preterm infants in this position to improve nutritional tolerance. (ac.ir)

Therefore, the present study was conducted to compare the effect of two positions (i.e., prone and right lateral) on gastric residual volume in preterm newborns after gavage feeding. (ac.ir)
12. Li YF, Lin HC, Torrazza RM, Parker L, Talaga E, Neu J. Gastric residual evaluation in preterm neonates: a useful monitoring technique or a hindrance? (ac.ir)
Comparison of the effect of Nutrition in Kangaroo Mother Care and Supine Positions on Gavage Residual Volume in Preterm Infants', Evidence Based Care , 5(1), pp. 17-24. (ac.ir)
Aim: Comparison of the effect of nutrition in the kangaroo mother care and supine position on gavage residual volume in preterm infants. (ac.ir)

Lung volume measurement is usually done as part of pulmonary function testing, which is often needed for people with lung disorders such as asthma, COPD, and emphysema. (wikihow.com)

deficient fluid volume a nursing diagnosis accepted by the North American Nursing Diagnosis Association, defined as decreased intravascular, interstitial, and/or intracellular fluid. (thefreedictionary.com)
See also fluid volume . (thefreedictionary.com)
Formerly called fluid volume deficit . (thefreedictionary.com)
A deficit of fluid volume occurs when there is either an excessive loss of body water or an inadequate compensatory intake. (thefreedictionary.com)
In severe and intractable fluid volume deficit a central venous catheter may be used to evaluate the extent of fluid loss and to guide replacement therapy. (thefreedictionary.com)
The amount and pH of residual fluid was recorded. (minervamedica.it)
A body mass index of ≥30 kg/m2 was associated with the presence of fluid (P=0.03), and a higher volume (P=0.03). (minervamedica.it)
A higher body mass index was associated with a higher incidence and volume of residual fluid. (minervamedica.it)
The natural variations in the volume of the limb through the course of the day are due to variations in fluid retention. (easyliner.eu)
Patented design refracts light so graduations below fluid become invisible, making it easier to identify the exact desired volume line. (integra-biosciences.com)

The aim of this study was to evaluate the impact of low-volume vs. standard-volume bowel preparation on participation in screening colonoscopy, bowel preparation quality, and lesion detection rates. (bioportfolio.com)

Anatomy6

Diseases18

Chemicals and Drugs6

Analytical, Diagnostic and Therapeutic Techniques and Equipment42

Psychiatry and Psychology1

Phenomena and Processes27

Information Science1

Health Care10

Expiratory and inspiratory chest computed tomography and pulmonary function tests in cigarette smokers. (1/118)

Subcellular adaptation of the human diaphragm in chronic obstructive pulmonary disease. (2/118)

Long-term recovery of diaphragm strength in neuralgic amyotrophy. (3/118)

Human lung volumes and the mechanisms that set them. (4/118)

Differential lung mechanics are genetically determined in inbred murine strains. (5/118)

Airway responsiveness to methacholine: effects of deep inhalations and airway inflammation. (6/118)

A novel non-invasive technique for measuring the residual lung volume by nitrogen washout with rapid thoracoabdominal compression in infants. (7/118)

Density dependence of forced expiratory flows in healthy infants and toddlers. (8/118)

No images available that match "residual volume"

Residual Volume

Total Lung Capacity

Lung Volume Measurements

Functional Residual Capacity

Plethysmography

Vital Capacity

Pulmonary Emphysema

Respiratory Function Tests

Forced Expiratory Volume

Lung

Plethysmography, Whole Body

Respiratory Aspiration

Gallbladder Emptying

Spirometry

Respiratory Mechanics

Blood Volume

Pulmonary Diffusing Capacity

Urodynamics

Enteral Nutrition

Urination

Gastric Emptying

Intubation, Gastrointestinal

Lung Compliance

Neoplasm, Residual

Urinary Retention

Pneumonectomy

Expiratory Reserve Volume

Inhalation

Bronchoconstrictor Agents

Gastrointestinal Contents

Urinary Bladder

Emphysema

Venous Insufficiency

Diaphragm

Urinary Bladder Diseases

Pressure

Maximal Expiratory Flow Rate

Respiratory Muscles

Dyspnea

Pulmonary Disease, Chronic Obstructive

Helium

Urination Disorders

Lung Diseases, Obstructive

Pulmonary Ventilation

Time Factors

Respiratory Physiological Phenomena

Forced Expiratory Flow Rates

Airway Resistance

Methacholine Chloride

Treatment Outcome

Urinary Bladder Neck Obstruction

Prospective Studies

Airway Obstruction

Prostatic Hyperplasia

Respiration

Tomography, X-Ray Computed

Plasma Volume

Urethra

Critical Illness

Bronchodilator Agents

Stroke Volume

Nebulizers and Vaporizers

Bronchoscopy

Follow-Up Studies

Reproducibility of Results

Aerosols

Statistics, Nonparametric

Respiration, Artificial

Reference Values

Severity of Illness Index

Asthma

Erythrocyte Volume

Lung Diseases

Administration, Inhalation

Analysis of Variance

Retrospective Studies

Blood Volume Determination

Magnetic Resonance Imaging

Cross-Over Studies

Oxygen