Cardiac Output
Thermodilution
Hemodynamics
Myocytes, Cardiac
Cardiac Output, Low
A state of subnormal or depressed cardiac output at rest or during stress. It is a characteristic of CARDIOVASCULAR DISEASES, including congenital, valvular, rheumatic, hypertensive, coronary, and cardiomyopathic. The serious form of low cardiac output is characterized by marked reduction in STROKE VOLUME, and systemic vasoconstriction resulting in cold, pale, and sometimes cyanotic extremities.
Vascular Resistance
Dye Dilution Technique
Cardiac Output, High
A state of elevated cardiac output due to conditions of either increased hemodynamic demand or reduced cardiac oxygen output. These conditions may include ANEMIA; ARTERIOVENOUS FISTULA; THYROTOXICOSIS; PREGNANCY; EXERCISE; FEVER; and ANOXIA. In time, compensatory changes of the heart can lead to pathological form of high cardiac output and eventual HEART FAILURE.
Cardiography, Impedance
A type of impedance plethysmography in which bioelectrical impedance is measured between electrodes positioned around the neck and around the lower thorax. It is used principally to calculate stroke volume and cardiac volume, but it is also related to myocardial contractility, thoracic fluid content, and circulation to the extremities.
Stroke Volume
Arrhythmias, Cardiac
Dogs
Oxygen Consumption
Catheterization, Swan-Ganz
Placement of a balloon-tipped catheter into the pulmonary artery through the antecubital, subclavian, and sometimes the femoral vein. It is used to measure pulmonary artery pressure and pulmonary artery wedge pressure which reflects left atrial pressure and left ventricular end-diastolic pressure. The catheter is threaded into the right atrium, the balloon is inflated and the catheter follows the blood flow through the tricuspid valve into the right ventricle and out into the pulmonary artery.
Death, Sudden, Cardiac
Unexpected rapid natural death due to cardiovascular collapse within one hour of initial symptoms. It is usually caused by the worsening of existing heart diseases. The sudden onset of symptoms, such as CHEST PAIN and CARDIAC ARRHYTHMIAS, particularly VENTRICULAR TACHYCARDIA, can lead to the loss of consciousness and cardiac arrest followed by biological death. (from Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine, 7th ed., 2005)
Cardiac Catheterization
Cardiac Pacing, Artificial
Heart Failure
A heterogeneous condition in which the heart is unable to pump out sufficient blood to meet the metabolic need of the body. Heart failure can be caused by structural defects, functional abnormalities (VENTRICULAR DYSFUNCTION), or a sudden overload beyond its capacity. Chronic heart failure is more common than acute heart failure which results from sudden insult to cardiac function, such as MYOCARDIAL INFARCTION.
Heart Ventricles
Monitoring, Physiologic
Myocardium
Heart Diseases
Cardiac Tamponade
Ventricular Function, Left
Echocardiography
Cardiomegaly
Enlargement of the HEART, usually indicated by a cardiothoracic ratio above 0.50. Heart enlargement may involve the right, the left, or both HEART VENTRICLES or HEART ATRIA. Cardiomegaly is a nonspecific symptom seen in patients with chronic systolic heart failure (HEART FAILURE) or several forms of CARDIOMYOPATHIES.
Indicator Dilution Techniques
Cardiovascular Physiological Phenomena
Oxygen
Central Venous Pressure
Electrocardiography
Recording of the moment-to-moment electromotive forces of the HEART as projected onto various sites on the body's surface, delineated as a scalar function of time. The recording is monitored by a tracing on slow moving chart paper or by observing it on a cardioscope, which is a CATHODE RAY TUBE DISPLAY.
Physical Exertion
Cardiac Volume
Heart Arrest
Carbon Dioxide
Cardiotonic Agents
Models, Cardiovascular
Blood Flow Velocity
Pulmonary Artery
Exercise Test
Cardiomyopathies
A group of diseases in which the dominant feature is the involvement of the CARDIAC MUSCLE itself. Cardiomyopathies are classified according to their predominant pathophysiological features (DILATED CARDIOMYOPATHY; HYPERTROPHIC CARDIOMYOPATHY; RESTRICTIVE CARDIOMYOPATHY) or their etiological/pathological factors (CARDIOMYOPATHY, ALCOHOLIC; ENDOCARDIAL FIBROELASTOSIS).
Echocardiography, Doppler
Pulmonary Wedge Pressure
Cardiovascular System
Respiration
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).
Pulmonary Gas Exchange
Ventricular Dysfunction, Left
A condition in which the LEFT VENTRICLE of the heart was functionally impaired. This condition usually leads to HEART FAILURE; MYOCARDIAL INFARCTION; and other cardiovascular complications. Diagnosis is made by measuring the diminished ejection fraction and a depressed level of motility of the left ventricular wall.
Norepinephrine
Precursor of epinephrine that is secreted by the adrenal medulla and is a widespread central and autonomic neurotransmitter. Norepinephrine is the principal transmitter of most postganglionic sympathetic fibers and of the diffuse projection system in the brain arising from the locus ceruleus. It is also found in plants and is used pharmacologically as a sympathomimetic.
Blood Volume Determination
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.
Heart Defects, Congenital
Fetal Heart
Reproducibility of Results
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.
Hypotension
Splanchnic Circulation
Prospective Studies
Myocardial Infarction
Ventricular Remodeling
Monitoring, Intraoperative
Plethysmography, Impedance
Cardiopulmonary Bypass
Exercise
Myoblasts, Cardiac
Rats, Sprague-Dawley
Swine
Any of various animals that constitute the family Suidae and comprise stout-bodied, short-legged omnivorous mammals with thick skin, usually covered with coarse bristles, a rather long mobile snout, and small tail. Included are the genera Babyrousa, Phacochoerus (wart hogs), and Sus, the latter containing the domestic pig (see SUS SCROFA).
Treatment Outcome
Xylazine
Disease Models, Animal
Hypertension, Pulmonary
Cardiac Imaging Techniques
Sheep
Ventricular Pressure
The pressure within a CARDIAC VENTRICLE. Ventricular pressure waveforms can be measured in the beating heart by catheterization or estimated using imaging techniques (e.g., DOPPLER ECHOCARDIOGRAPHY). The information is useful in evaluating the function of the MYOCARDIUM; CARDIAC VALVES; and PERICARDIUM, particularly with simultaneous measurement of other (e.g., aortic or atrial) pressures.
Fluid Therapy
Indocyanine Green
Epinephrine
The active sympathomimetic hormone from the ADRENAL MEDULLA. It stimulates both the alpha- and beta- adrenergic systems, causes systemic VASOCONSTRICTION and gastrointestinal relaxation, stimulates the HEART, and dilates BRONCHI and cerebral vessels. It is used in ASTHMA and CARDIAC FAILURE and to delay absorption of local ANESTHETICS.
Propranolol
Troponin I
Cardiac Glycosides
Cyclopentanophenanthrenes with a 5- or 6-membered lactone ring attached at the 17-position and SUGARS attached at the 3-position. Plants they come from have long been used in congestive heart failure. They increase the force of cardiac contraction without significantly affecting other parameters, but are very toxic at larger doses. Their mechanism of action usually involves inhibition of the NA(+)-K(+)-EXCHANGING ATPASE and they are often used in cell biological studies for that purpose.
Anesthesia
Cardiac Resynchronization Therapy
Dobutamine
Atrial Natriuretic Factor
Hematocrit
Arterial Pressure
Cardiomyopathy, Dilated
Cardiopulmonary Resuscitation
The artificial substitution of heart and lung action as indicated for HEART ARREST resulting from electric shock, DROWNING, respiratory arrest, or other causes. The two major components of cardiopulmonary resuscitation are artificial ventilation (RESPIRATION, ARTIFICIAL) and closed-chest CARDIAC MASSAGE.
Hypovolemia
Out-of-Hospital Cardiac Arrest
Ventricular Function, Right
Adrenergic beta-Antagonists
Partial Pressure
Isoproterenol
Myocardial Ischemia
A disorder of cardiac function caused by insufficient blood flow to the muscle tissue of the heart. The decreased blood flow may be due to narrowing of the coronary arteries (CORONARY ARTERY DISEASE), to obstruction by a thrombus (CORONARY THROMBOSIS), or less commonly, to diffuse narrowing of arterioles and other small vessels within the heart. Severe interruption of the blood supply to the myocardial tissue may result in necrosis of cardiac muscle (MYOCARDIAL INFARCTION).
Pacemaker, Artificial
Muscle, Skeletal
Analysis of Variance
Exercise Tolerance
Hypertension
Baroreflex
A response by the BARORECEPTORS to increased BLOOD PRESSURE. Increased pressure stretches BLOOD VESSELS which activates the baroreceptors in the vessel walls. The net response of the CENTRAL NERVOUS SYSTEM is a reduction of central sympathetic outflow. This reduces blood pressure both by decreasing peripheral VASCULAR RESISTANCE and by lowering CARDIAC OUTPUT. Because the baroreceptors are tonically active, the baroreflex can compensate rapidly for both increases and decreases in blood pressure.
Pressoreceptors
Coronary Artery Bypass
Heart Conduction System
Rats, Wistar
Microspheres
Reference Values
Vascular Capacitance
Postoperative Care
Pericardium
A conical fibro-serous sac surrounding the HEART and the roots of the great vessels (AORTA; VENAE CAVAE; PULMONARY ARTERY). Pericardium consists of two sacs: the outer fibrous pericardium and the inner serous pericardium. The latter consists of an outer parietal layer facing the fibrous pericardium, and an inner visceral layer (epicardium) resting next to the heart, and a pericardial cavity between these two layers.
Echocardiography, Transesophageal
Ventilation-Perfusion Ratio
Autonomic Nervous System
The ENTERIC NERVOUS SYSTEM; PARASYMPATHETIC NERVOUS SYSTEM; and SYMPATHETIC NERVOUS SYSTEM taken together. Generally speaking, the autonomic nervous system regulates the internal environment during both peaceful activity and physical or emotional stress. Autonomic activity is controlled and integrated by the CENTRAL NERVOUS SYSTEM, especially the HYPOTHALAMUS and the SOLITARY NUCLEUS, which receive information relayed from VISCERAL AFFERENTS.
Calcium
A basic element found in nearly all organized tissues. It is a member of the alkaline earth family of metals with the atomic symbol Ca, atomic number 20, and atomic weight 40. Calcium is the most abundant mineral in the body and combines with phosphorus to form calcium phosphate in the bones and teeth. It is essential for the normal functioning of nerves and muscles and plays a role in blood coagulation (as factor IV) and in many enzymatic processes.
Halothane
A nonflammable, halogenated, hydrocarbon anesthetic that provides relatively rapid induction with little or no excitement. Analgesia may not be adequate. NITROUS OXIDE is often given concomitantly. Because halothane may not produce sufficient muscle relaxation, supplemental neuromuscular blocking agents may be required. (From AMA Drug Evaluations Annual, 1994, p178)
Extracorporeal Circulation
Hydrazones
Plasma Substitutes
Dose-Response Relationship, Drug
Lower Body Negative Pressure
Reflex
Kidney
Hemodilution
Troponin T
Renin
Heart Block
Impaired conduction of cardiac impulse that can occur anywhere along the conduction pathway, such as between the SINOATRIAL NODE and the right atrium (SA block) or between atria and ventricles (AV block). Heart blocks can be classified by the duration, frequency, or completeness of conduction block. Reversibility depends on the degree of structural or functional defects.
Shock, Septic
Infusions, Intravenous
Fibrosis
Intensive Care
Postoperative Complications
Respiration, Artificial
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).
Retrospective Studies
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.
Follow-Up Studies
Photoplethysmography
Physical Conditioning, Animal
Rabbits
Pulmonary Edema
Ultrasonics
A subfield of acoustics dealing in the radio frequency range higher than acoustic SOUND waves (approximately above 20 kilohertz). Ultrasonic radiation is used therapeutically (DIATHERMY and ULTRASONIC THERAPY) to generate HEAT and to selectively destroy tissues. It is also used in diagnostics, for example, ULTRASONOGRAPHY; ECHOENCEPHALOGRAPHY; and ECHOCARDIOGRAPHY, to visually display echoes received from irradiated tissues.
Heart Neoplasms
Electromagnetic Phenomena
Vagus Nerve
The 10th cranial nerve. The vagus is a mixed nerve which contains somatic afferents (from skin in back of the ear and the external auditory meatus), visceral afferents (from the pharynx, larynx, thorax, and abdomen), parasympathetic efferents (to the thorax and abdomen), and efferents to striated muscle (of the larynx and pharynx).
Respiratory Mechanics
Bradycardia
Natriuretic Peptide, Brain
Echocardiography, Doppler, Color
Algorithms
Sympathetic Nervous System
The thoracolumbar division of the autonomic nervous system. Sympathetic preganglionic fibers originate in neurons of the intermediolateral column of the spinal cord and project to the paravertebral and prevertebral ganglia, which in turn project to target organs. The sympathetic nervous system mediates the body's response to stressful situations, i.e., the fight or flight reactions. It often acts reciprocally to the parasympathetic system.
Lactic Acid
Predictive Value of Tests
In screening and diagnostic tests, the probability that a person with a positive test is a true positive (i.e., has the disease), is referred to as the predictive value of a positive test; whereas, the predictive value of a negative test is the probability that the person with a negative test does not have the disease. Predictive value is related to the sensitivity and specificity of the test.
Hypertrophy, Left Ventricular
Models, Biological
Magnetic Resonance Imaging, Cine
A type of imaging technique used primarily in the field of cardiology. By coordinating the fast gradient-echo MRI sequence with retrospective ECG-gating, numerous short time frames evenly spaced in the cardiac cycle are produced. These images are laced together in a cinematic display so that wall motion of the ventricles, valve motion, and blood flow patterns in the heart and great vessels can be visualized.
Lung
Phenylephrine
Tilt-Table Test
Pulse
Compliance
Adaptation, Physiological
Heart Rate, Fetal
Syncope
A transient loss of consciousness and postural tone caused by diminished blood flow to the brain (i.e., BRAIN ISCHEMIA). Presyncope refers to the sensation of lightheadedness and loss of strength that precedes a syncopal event or accompanies an incomplete syncope. (From Adams et al., Principles of Neurology, 6th ed, pp367-9)
Phasic right coronary artery blood flow in conscious dogs with normal and elevated right ventricular pressures. (1/3428)
We studied phasic right coronary blood flow in well trained normal dogs and dogs with pulmonic stenosis. We installed electromagnetic flow transducers and pressure tubes under anesthesia to monitor right coronary blood flow, cardiac output, central aortic blood pressure, and right ventribular pressure. In normotensive dogs, systolic flow amplitude equaled early diastolic flow levels. The ratio of systolic to diastolic flow at rest was substantially greater in the right coronary bed (36+/-1.3%) than in the left circumflex bed (13+/-3.6%). Right diastolid flow runoff, including the cove late in diastole, resembled left circumflex runoff. Blood flow to the normotensive right (37+/-1.1 ml/min 100(-1) g) and the left (35+/-1.0 ml/min(-1) g) ventricular myocardium indicated equal perfusion of both cardiac walls. Throttling of systolic flow was related directly to the right ventricular systolic pressure level in the dogs with pulmonic stenosis. Retrograde systolic flow occurred in severe right ventricular hypertension. The late diastolic runoff pattern in dogs with pulmonic stenosis appeared the same as for the normotensive dogs. We obtained systolic to diastolic flow ratios of 1/3 the value of normotensive hearts in high and severe pulmonic hypertension. Electrocardiograms and studies of pathology suggested restricted blood flow to the inner layers of the right myocardium in the dogs with severe and high right ventricular hypertension. Normotensive and hypertensive peak hyperemic flow responses were similar, except for an increased magnitude of diastolic flow, with proportionately less systolic flow in hypertensive states. (+info)Quantification of baroreceptor influence on arterial pressure changes seen in primary angiotension-induced hypertension in dogs. (2/3428)
We studied the role of the sino-aortic baroreceptors in the gradual development of hypertension induced by prolonged administration of small amounts of angiotensin II (A II) in intact dogs and dogs with denervated sino-aortic baroreceptors. Short-term 1-hour infusions of A II(1.0-100 ng/kg per min) showed that conscious denervated dogs had twice the pressor sensitivity of intact dogs. Long-term infusions of A II at 5.0 ng/kg per min (2-3 weeks) with continuous 24-hour recordings of arterial pressure showed that intact dogs required 28 hours to reach the same level of pressure attained by denervated dogs during the 1st hour of infusion. At the 28th hour the pressure in both groups was 70% of the maximum value attained by the 7th day of infusion. Both intact and denervated dogs reached nearly the same plateau level of pressure, the magnitude being directly related both the the A II infusion rate and the daily sodium intake. Cardiac output in intact dogs initially decreased after the onset of A II infusion, but by the 5th day of infusion it was 38% above control, whereas blood volume was unchanged. Heart rate returned to normal after a reduction during the 1st day of infusion in intact dogs. Plasma renin activity could not be detected after 24 hours of A II infusion in either intact or denervated dogs. The data indicate that about 35% of the hypertensive effect of A II results from its acute pressor action, and an additional 35% of the gradual increase in arterial pressure is in large measure a result of baroreceptor resetting. We conclude that the final 30% increase in pressure seems to result from increased cardiac output, the cause of which may be decreased vascular compliance. since the blood volume remains unaltered. (+info)Site of myocardial infarction. A determinant of the cardiovascular changes induced in the cat by coronary occlusion. (3/3428)
The influence of site of acute myocardial infarction on heart rate, blood pressure, cardiac output, total peripheral resistance (TPR), cardiac rhythm, and mortality was determined in 58 anesthetized cats by occlusion of either the left anterior descending (LAD), left circumflex or right coronary artery. LAD occlusion resulted in immediate decrease in cardiac output, heart rate, and blood pressure, an increase in TPR, and cardiac rhythm changes including premature ventricular beats, ventricular tachycardia, and occasionally ventricular fibrillation. The decrease in cardiac output and increase in TPR persisted in the cats surviving a ventricular arrhythmia. In contrast, right coronary occlusion resulted in a considerably smaller decrease in cardiac output. TPR did not increase, atrioventricular condition disturbances were common, and sinus bradycardia and hypotension persisted in the cats recovering from an arrhythmia. Left circumflex ligation resulted in cardiovascular changes intermediate between those produced by occlusion of the LAD or the right coronary artery. Mortality was similar in each of the three groups. We studied the coronary artery anatomy in 12 cats. In 10, the blood supply to the sinus node was from the right coronary artery and in 2, from the left circumflex coronary artery. The atrioventricular node artery arose from the right in 9 cats, and from the left circumflex in 3. The right coronary artery was dominant in 9 cats and the left in 3. In conclusion, the site of experimental coronary occlusion in cats is a major determinant of the hemodynamic and cardiac rhythm changes occurring after acute myocardial infarction. The cardiovascular responses evoked by ligation are related in part to the anatomical distribution of the occluded artery. (+info)Effect of portal-systemic anastomosis on renal haemodynamics in cirrhosis. (4/3428)
In 12 patients with portal hypertension and repeated bleedings from oesophageal varices the central haemodynamics, portal pressure, and mean renal blood flow (RBF) were investigated immediately before and two to seven months after portal-systemic shunt. Cardiac output increased significantly, whereas arterial pressure was unchanged after operation. RBF, which was initially less than in controls, did not change. As portal pressure decreased significantly, a direct portal-renal, neural, or humoral reflex mechanism does not explain the subnormal RBF in cirrhosis. As plasma volume was large and unchanged after operation a "diminished circulating plasma volume" is an unlikely explanation. Therefore, on the basis of the present observations, previously postulated causes of renal hypoperfusion in cirrhosis need revision. (+info)The respiratory responses of Carcinus maenas to declining oxygen tension. (5/3428)
The degree of respiratory independence shown by Carcinus under conditions of declining oxygen tension is dependent on the animal's level of activity. Inactive Carcinus are capable of maintaining respiratory independence down to a Po2 of 60-80 mmHg. This is achieved primarily by an increase in ventilation volume such that the amount of oxygen made available at the respiratory surfaces remains constant over a wide range of oxygen tension. The Po2 at which this can no longer be maintained corresponds closely to the Po2 at which respiratory independence is lost. Under normoxic conditions the Po2 of the post- and prebranchial blood was 97 and 18 mmHg respectively. At the high oxygen tensions prevailing in the postbranchial blood the respiratory pigment is fully saturated. Under conditions of declining oxygen tension the heart rate remains more or less constant until the Po2 reaches 60-80 mmHg, the onset of bradycardia coinciding with the loss of saturation of the haemocyanin. Although cardiac output falls during hypoxia, the capacity rate ratio remains approximately constant, which enables the effectiveness of oxygen uptake by the blood to remain at a high level. (+info)Reversal of severe pulmonary hypertension with beta blockade in a patient with end stage left ventricular failure. (6/3428)
A 52 year old man with severe chronic left ventricular failure (New York Heart Association class IV) was considered unsuitable for cardiac transplantation because of high and irreversible pulmonary vascular resistance (PVR). In an attempt to produce symptomatic improvement, metoprolol was cautiously introduced, initially at 6.25 mg twice daily. This was slowly increased to 50 mg twice daily over a two month period and continued thereafter. After four months of treatment the patient's symptoms had improved dramatically. His exercise tolerance had increased and diuretic requirements reduced to frusemide 160 mg/day only. Assessment of right heart pressures was repeated and, other than a drop in resting heart rate, there was little change in his pulmonary artery pressure or PVR. His right heart pressures were reassessed showing a pronounced reduction in pulmonary artery pressure and a significant reduction in PVR, which fell further with inhaled oxygen and sublingual nitrates. He was then accepted onto the active waiting list for cardiac transplantation. A possible mechanism of action was investigated by assessing responses to beta agonists during treatment. Not only was there pronounced improvement in PVR but it was also demonstrated that beta receptor subtype cross-regulation may have contributed to the mechanism of benefit. (+info)Validation of haemodialysis recirculation and access blood flow measured by thermodilution. (7/3428)
BACKGROUND: Recirculation (R) and access blood flow (Qac) measurements are considered useful indicators of adequate delivery of haemodialysis. It was the purpose of this study to compare measurements of R and Qac obtained by two different techniques which are based on the same principle of indicator dilution, but which differ because of the characteristics of the injection and detection of the different indicators used. METHODS: Recirculation measured by a thermal dilution technique using temperature sensors (BTM, Fresenius Medical Care) was compared with recirculation measured by a validated saline dilution technique using ultrasonic transducers placed on arterial and venous segments of the extracorporeal circulation (HDM, Transonic Systems, Inc.). Calculated access flows were compared by Bland Altman analysis. Data are given as mean +/- SD. RESULTS: A total of 104 measurements obtained in 52 treatments (17 patients, 18 accesses) were compared. Recirculation measured with correct placement of blood lines and corrected for the effect of cardiopulmonary recirculation using the 'double recirculation technique' was -0.02 +/- 0.14% by the BTM technique and not different from the 0% measured by the HDM technique. Recirculation measured with reversed placement of blood lines and corrected for the effect of cardiopulmonary recirculation was 19.66 +/- 10.77% measured by the BTM technique compared with 20.87 +/- 11.64% measured by the HDM technique. The difference between techniques was small (-1.21 +/- 2.44%) albeit significant. Access flow calculated from BTM recirculation was 1328 +/- 627 ml/min compared with 1390 +/- 657 ml/min calculated by the HDM technique. There was no bias between techniques. CONCLUSION: BTM thermodilution yields results which are consistent with the HDM ultrasound dilution technique with regard to both recirculation and access flow measurement. (+info)Factors mediating the hemodynamic effects of tumor necrosis factor-alpha in portal hypertensive rats. (8/3428)
Nitric oxide, prostacyclin, and glucagon have been implicated in promoting the hyperdynamic circulatory state of portal hypertension. Recent evidence also indicates that increased tumor necrosis factor-alpha (TNF-alpha) production is involved in the pathogenesis of this hemodynamic abnormality. This study was aimed at investigating in rats with portal vein stenosis (PVS) the effects on splanchnic hemodynamics of blocking circulating TNF-alpha and the factors mediating the vascular action of this cytokine in this setting. Anti-TNF-alpha polyclonal antibodies or placebo was injected into rats (n = 96) before and 4 days after PVS (short-term inhibition) and at 24 h and 4, 7, 10 days after PVS (long-term inhibition). Short-term TNF-alpha inhibition reduced portal venous inflow and cardiac index and increased splanchnic and systemic resistance. Portal pressure was unchanged, but portal-systemic shunting was decreased. After long-term TNF-alpha inhibition, portal venous inflow and portal pressure were unchanged, but arterial pressure and systemic resistance rose significantly. Anti-TNF-alpha PVS rats exhibited lower increments of systemic resistance after Nomega-nitro-L-arginine methyl ester and indomethacin administration and lower serum levels of TNF-alpha, nitrates-nitrites, and 6-keto-PGF1alpha, both over the short and the long term. Serum glucagon levels rose after long-term inhibition. In conclusion, the specific role played by TNF-alpha in the development of the hyperdynamic state of portal hypertension appears to be mainly mediated through an increased release of nitric oxide and prostacyclin. Maintenance of the splanchnic hyperemia after long-term TNF-alpha inhibition could be due to a compensatory release of glucagon. (+info)
ASSA13-08-3 Influence of Cardiac Output on Sevoflurane Pharmacodynamics | Heart
The Effect on Cardiac Output of the Conversion from Atrial Fibrillation to a Normal Sinus Mechanism. | Annals of Internal...
Peripheral Venous Oxygen Saturation and Biomarkers to Estimate Cardiac Output and Filling Pressures in Heart Failure - Full...
Cardiac Output
Modes of Mechanical Ventilation
Muscle Oxygen Training: Cardiac Output Redistribution and Costal Desaturation
Cardiac Output Measurement • LITFL Medical Blog • CCC
Comparison of cardiac output determined by different rebreathing methods at rest and at peak exercise - Bucks New University...
Accuracy and repeatability of pediatric cardiac output measurement using Doppler: 20-year review of the literature.
The effect of patient position on the reproducibility of cardiac output measurements - DRO
Non-invasive cardiac stress testing before elective major non-cardiac surgery: population based cohort study
Age-and-exercise-related effects on cardiac power output | LJMU Research Online
Non-invasive Evaluation of Fluid Status and Cardiac Output During Operative Treatment of Pheochromcytoma - Full Text View -...
Kathleen Dracup, mentor extraordinaire. Maximizing therapy in the advanced heart failure patient. Cardiac power output during...
Non-Invasive & Minimally Invasive Cardiac Output Monitoring Device Market (2014 - 2019) | Non-Invasive & Minimally Invasive...
Amps for Noninvasive Cardiac Output and Electrobioimpedance, plus Z Calibration
How do you calculate maximum cardiac output? | EveryThingWhat.com
Case Scenario: Respiratory Variations in Arterial Pressure for Guiding Fluid Management in Mechanically Ventilated Patients |...
Effects of Exercise Responses to Exercise.. There Are Two Kinds of Response to Exercise Immediate, short-term responses that...
Ability of esCCO to track changes in cardiac output : BJA: British Journal of Anaesthesia - oi
Non-invasive cardiac pacing with image-guided focused ultrasound | Scientific Reports
IBIMA Publishing Prediction of Hypertensive Disorders of Pregnancy by Measuring Cardiac Output in Early Pregnancy
Cardiac output and renal function during insulin hypertension in Sprague-Dawley rats<...
Patient management after noninvasive cardiac imaging results from SPARC (Study of myocardial perfusion and coronary anatomy...
Cardiology and Cardiothoracic Surgery/Pregnancy and Cardiovascular Disease - Wikibooks, open books for an open world
Application of bioreactance for cardiac output assessment during exercise in healthy individuals - Northumbria Research Link
Invasive and non-invasive measurement and importance of cardiac output and systemic vascular resistance in animals - Zurich...
Cardiac output | physiology | Britannica
THE CARDIAC OUTPUT AND VASCULAR RESPONSE TO TRAUMA.
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Reply | JACC: Journal of the American College of Cardiology
CARDIAC OUTPUT IN COMMON CLINICAL CONDITIONS, AND THE DIAGNOSIS OF MYOCARDIAL INSUFFICIENCY BY CARDIAC OUTPUT METHODS* | Annals...
Cardiac Output Part 2 Finish SV and do HR | Learning Material
| Noodle
Cardiac monitor - Patent # 5241965 - PatentGenius
Aortocaval Compression in Pregnancy: The Effect of Changing... : Anesthesia & Analgesia
Give an example of a factor that would tend to raise arterial blood pressure by producing a change in cardiac output,...
Vasodilator - wikidoc
Cardiac Output (Fick) | Calculators
Shock - my peripheral brain
北京大学医学部机构知识库([email protected]): An assessment of two Doppler-based monitors to track cardiac output changes in anaesthetised patients...
ISMRM 2016) Non-invasive cardiac stimulation with MR guided HIFU: a rapid, cardiac triggered, MR-ARFI method for direct...
The Relationship Between Cardiac Output and the Apparent Diffusing Capacity of the Lung in Normal Men During Treadmill Exercise...
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Cardiac Output - calculator - fxSolver
What is cardiac preload? | Reference.com
New developments of noninvasive cardiac imaging - Radcliffe Department of Medicine
Electrophysiology | Osypka Medical | Cardiotronic
Physical Modeling of the Cardiovascular System: A Critique.
SigmaPlot 2000 graphing software gears up for output on the Web -- GCN
Room-temperature thermodilution cardiac output: central venous vs right ventricular port | American Journal of Critical Care |...
Weaning patients with high cardiac output state: influence on central venous pressure and right ventricular stroke work index |...
Injectate port selection affects accuracy and reproducibility of cardiac output measurements with multiport thermodilution...
Pressure-Flow Studies in Man: Effect of Respiration on Left Ventricular Stroke Volume | Circulation
Noninvasive Doppler determination of cardiac output in man. Clinical validation. | Circulation
Superior cava vein saturation and cardiac lactate as cardiac output predictor after cardio-pulmonary bypass on children -...
Cardiac Output | BIOPAC
Cardiac output measurement by the injection method without arterial sampling
Cardiac Output, High; High Cardiac Output
Simultaneous determination of the accuracy and precision of closed-circuit cardiac output rebreathing techniques<...
New study confirms value of cardiac output monitor
Impedance cardiography synonyms, Impedance cardiography antonyms - FreeThesaurus.com
Influence of tourniquet deflation on cardiac output and other cardiopulmonary values during lower extremity surgery
Most recent papers with the keyword Nicom | Read by QxMD
Vasodepressor neurons in medulla alter cardiac contractility and cardiac output. | Hypertension
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Patent US4004576 - Direct indicator device for determining the cardiac output flow rate ... - Google Patents
Simultaneous investigations of maternal cardiac output and fetal blood flow during hypervolemic hemodilution in preeclampsia -...
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Ramakrishna Mukkamala | Electrical and Computer Engineering
cardiac-output-units
Reliability of thermodilution derived cardiac output with different operator characteristics | Springer for Research &...
Measurement of cardiac output during exercise by open-circuit acetylene uptake<...
Haemodynamic Transition after Birth: A New Tool for Non-Invasive Cardiac Output Monitoring - PortSaid Neonatology Group
Pediatric Impedance Cardiography: Temporal Stability and Intertask Con by William H. OBrien and Jennifer J. McGrath
Introduction Electric velocimetry (EV) is normally a kind of impedance cardiography, - Small Molecule Inhibitors of Protein...
CARDIAC OUTPUT IN INFANTS OF DIABETIC MOTHERS | Portale gerboni.net
A511 COMPARISON OF CARDIAC OUTPUTS MEASURED BY TRANSTRACHEAL DOPPLER AND THERMODILUTION IN ANESTHETIZED PATIENTS |...
Minimizing catecholamines and optimizing perfusion | Critical Care | Full Text
Central venous pressure monitoring in the ICU - Oxford Medicine
Repeatability of Impedance Cardiography in the Measurement of Cardiova by Lindsey Rodriguez
Patent US7251524 - Apparatus and method for determining cardiac output in a living subject - Google Patents
Validation of Noninvasive Measurement of Cardiac Output Using Inert Gas Rebreathing in a Cohort of Patients With Heart Failure...
CARDIAC ▷ Suomeksi Käännös - Esimerkkejä Käyttö Cardiac Lauseita Englanti
US Patent for Variable indication estimator Patent (Patent # 9,138,192 issued September 22, 2015) - Justia Patents Search
A81 CARDIAC OUTPUT FAILS TO INCREASE WITH PACING IN CARDIAC SURGICAL PATIENTS | Anesthesiology | American Society of...
Failure of the Flotracâ ¢/Vigileoâ ¢ (3.01) to Track Rapid Hemodynamic Changes in an Unstable Cardiac Surgical Patient | OMICS...
The role of magnesium in the emergency department | Emergency Medicine Journal
high cardiac output - Heart Disease - MedHelp
Determination of cardiac output by external detection of the radio-activity of aortic blood (human serum albumin labelled with...
Onward Through the Fog: 2012
Cardiac output
Cardiac input (CI) is the inverse operation of cardiac output. As cardiac output implies the volumetric expression of ejection ... In cardiac physiology, cardiac output (CO), also known as heart output and often denoted by the symbols Q {\displaystyle Q} , Q ... Values for cardiac output are usually denoted as L/min. For a healthy individual weighing 70 kg, the cardiac output at rest ... its cardiac output, Q. Cardiac output is classically defined alongside stroke volume (SV) and the heart rate (HR) as:[citation ...
Quantium Medical Cardiac Output
The assessment of Cardiac Output (CO) is important because it reveals the main cardiac function: the supply of blood to tissues ... quantium Medical Cardiac Output (qCO) uses impedance cardiography in a simple, continuous, and non-invasive way to estimate the ... Hofer, C.K.; Ganter, M.T.; Zollinger, A. (2007). "What technique should I use to measure cardiac output?". Curr. Opin. Crit. ... de Waal, E. E. C.; Wappler, F.; Buhre, F. (2009). "Cardiac output monitoring". Curr. Opin. Anesthesiol. 22. García, X.; Mateu, ...
Maternal physiological changes in pregnancy
Cardiac output (Lit./Min.): 6.26 Stroke Volume (Ml.): 75 Heart Rate (Per min.): 85 Blood Pressure: Unaffected Cardiac output ... Estrogen mediates this rise in cardiac output by increasing the pre-load and stroke volume, mainly via a higher overall blood ... The increased GFR leads to increased urinary output, which the woman may experience as increased urinary frequency. ... The heart adapts to the increased cardiac demand that occurs during pregnancy in many ways. ...
Autoimmune heart disease
Chronic: Valve diseases as noted above; Reduced cardiac output; Exercise intolerance. Intensive cardiac care and ... Autoimmune heart diseases are the effects of the body's own immune defense system mistaking cardiac antigens as foreign and ... Acutely, it can cause pericardial effusion leading to cardiac tamponade and death. After healing, there may be fibrosis and ... adhesion of the pericardium with the heart leading to constriction of the heart and reduced cardiac function. Myocarditis: Here ...
Thiamine deficiency
In advanced cases, the disease may cause high-output cardiac failure and death. Symptoms may occur concurrently with those of ... Anand, I. S.; Florea, V. G. (2001). "High Output Cardiac Failure". Current Treatment Options in Cardiovascular Medicine. 3 (2 ... McIntyre, Neil; Stanley, Nigel N. (1971). "Cardiac Beriberi: Two Modes of Presentation". BMJ. 3 (5774): 567-9. doi:10.1136/bmj. ... "A case of cardiac beriberi: a forgotten but memorable disease". Korean Circulation Journal. 43 (8): 569-572. doi:10.4070/kcj. ...
High-output heart failure
... is a heart condition that occurs when the cardiac output is higher than normal due to increased ... High Output Cardiac Failure. Curr Treat Options Cardiovasc Med. 2001 Apr;3(2):151-159. PMID 11242561 Causes of High-Output ... Ultimately cardiac output can be reduced to very low levels. It may occur in situations with an increased blood volume, morbid ...
Venous return curve
It normally limits cardiac output. Superposition of the cardiac function curve and venous return curve is used in one ... direct influences on cardiac output such as end diastolic pressure and volume which can be causally related to cardiac output ... Although cardiac output and venous return are interdependent, each can be independently regulated. The circulatory system is ... However, as noted above it is clear that, equally, cardiac output must dictate venous return since over any period of time both ...
Isaac Starr
Henry A. Schroeder, was used to measure cardiac output and led to the first accurate physical measurements and to detection of ... This led him, shortly after joining Penn, to participate in a cardiac output methods program by the American Physiological ... At this program, his colleague, Yandell Henderson, demonstrated an apparatus for measuring cardiac output, a ... Cardiac Output Measurement Using Ballistocardiogram. The 15th International Conference on Biomedical Engineering IFMBE ...
Cardiac tamponade
This results in a decrease in cardiac input and output. A further decrease of cardiac input and output is typical in phase III ... The decrease in stroke volume can also ultimately lead to a decrease in cardiac output, which could be signaled by tachycardia ... "Management of Cardiac Tamponade After Cardiac Surgery". Journal of Cardiothoracic and Vascular Anesthesia. Elsevier BV. 26 (2 ... Cardiac tamponade is caused by a large or uncontrolled pericardial effusion, i.e. the buildup of fluid inside the pericardium. ...
Pulmonary artery catheter
The ability of the pulmonary artery catheter to sample mixed venous blood is of great utility to manage low cardiac output ... The concept of using thermodilution to measure cardiac output was originally the idea of Arnost Fronek. As a former colleague ... Regardless of the value obtained by measurements of the cardiac output, the mixed venous oxygen saturation is an accurate ... Non-invasive echocardiography and pulse-wave cardiac output monitoring are concordant with (and much safer) if not better than ...
Afterload
... is a determinant of cardiac output. Cardiac output is the product of stroke volume and heart rate. Afterload is a ... As afterload increases, cardiac output decreases. Cardiac imaging is a somewhat limited modality in defining afterload because ... This may start a vicious circle, in which cardiac output is reduced as oxygen requirements are increased. Afterload can also be ... Cardiac output Hemodynamics Preload Mohrman, David E. (2018). Cardiovascular Physiology, 9e. McGraw-Hill Education LLC. ISBN ...
Cardiac cycle
Apex beat Cardiac action potential Cardiac output Pulse "19.3 Cardiac Cycle , Anatomy & Physiology". library.open.oregonstate. ... of the cardiac cycle. Throughout the cardiac cycle, blood pressure increases and decreases. The movements of cardiac muscle are ... See Wiggers diagram: "Ventricular volume" tracing (red), at "Systole" panel.) Cardiac diastole is the period of the cardiac ... The cardiac cycle is the performance of the human heart from the beginning of one heartbeat to the beginning of the next. It ...
Esophageal doppler
Cardiac output (CO) is the product of stroke volume and heart rate. Although CO is available beat by beat, it is usually ... The cross-sectional area is adjusted to give more accurate cardiac output and renamed to aortic constant (AC). The product of ... "How the ODM works - Cardiac Output Monitoring , Deltex Medical". www.deltexmedical.com. (Articles needing additional references ... and cardiac output (CO). A properly constructed and calibrated probe is approved for use on adults and children in many parts ...
Otto Friedrich Ranke
Bloodless measurement of cardiac output) Z. Biol. 90, 467 (1930). 213 citations on Google Scholar (December 13, 2016) Wolf- ...
Heart failure with preserved ejection fraction
Cardiac output is dependent on stroke volume and heart rate. A significant portion (55-77%) of HFpEF patients are unable to ... As a consequence, cardiac output becomes diminished. When the left ventricular diastolic pressure is elevated, venous pressure ... Volumetric definition of the heart in systole was first described by Adolph Fick as cardiac output. Fick may be readily and ... Abudiab MM, Redfield MM, Melenovsky V, Olson TP, Kass DA, Johnson BD, Borlaug BA (July 2013). "Cardiac output response to ...
Bone
... receives about 10% of cardiac output. Blood enters the endosteum, flows through the marrow, and exits through small ...
Peter Lauremberg
120-121 Teichmann, G (November 1992). "William Harvey, Peter Lauremberg and cardiac output". International Journal of Clinical ...
Eurytherm
Ira, Stuart Fox (2016). "Cardiac Output, Blood Flow, and Blood Pressure". Human Physiology (14th ed.). New York, NY. pp. 450- ...
Obstructive shock
In both types, the heart's output of blood (cardiac output) is decreased. This causes a back-up of blood into the veins ... cardiac output drops. Hypotension and shock ensue. If not rapidly treated, it can lead to cardiac arrest and death. A pulmonary ... With the decrease cardiac output, blood flow to vital tissues is decreased. Poor perfusion to organs leads to shock. Due to ... With less venous return, cardiac output decreases. The lack of blood flow to vital organs can cause death. Various conditions ...
Hemodynamics
... cardiac output (L/sec) SV = stroke volume (ml) HR = heart rate (bpm) The normal human cardiac output is 5-6 L/min at rest. Not ... Cardiac output is determine by two methods. One is to used the Fick equation: C O = V O 2 / C a O 2 − C v O 2 {\displaystyle CO ... Cardiac output is mathematically expressed by the following equation: C O = S V × H R {\displaystyle CO=SV\times HR} where CO ... The rate of blood flow out of the heart (often expressed in L/min) is known as the cardiac output (CO). Blood being pumped out ...
Capnography
The relationship of cardiac output and end tidal CO 2 is linear, such that as cardiac output increases or decreases, the amount ... If cardiac output (the amount of blood that is pumped out of the heart) is decreased, the ability to transport CO 2 is also ... The AHA also notes in their new guidelines that capnography, which indirectly measures cardiac output, can also be used to ... Weil, Max; Bisera, Jose; Trevino; Rackow, Eric (October 2016). "Cardiac output and end-tidal carbon dioxide". Crit Care Med. 13 ...
Acute liver failure
Increased cardiac output and low systemic vascular resistance are characteristic of ALF. Pulmonary artery catheterization ... There is a compensatory increase in cardiac output. Adrenal insufficiency has been documented in 60% of ALF cases, and is ... cardiac arrhythmia or arrest and respiratory failure. The median time to death after admission was 5 days. Intravenous N- ...
Cardiovascular physiology
Cardiac output is mathematically ` to systole[clarification needed] Inotropic, chronotropic, and dromotropic states Cardiac ... Cardiac output (= heart rate * stroke volume. Can also be calculated with Fick principle,palpeting method.) Stroke volume (= ... Stroke volume Cardiac output Pressure Pulse pressure (systolic pressure - diastolic pressure) Mean arterial pressure (usually ... Electrical conduction system of the heart Electrocardiogram Cardiac marker Cardiac action potential Frank-Starling law of the ...
Allan George Williams Whitfield
Richards, D. G.; Whitfield, A. G.; Arnott, W. M.; Waterhouse, J. A. (1951). "The Lung Volume in Low Output Cardiac Syndromes". ...
Miguel Induráin
His cardiac output was 50 litres a minute; a fit amateur cyclist's is about 25 litres. Induráin's lung capacity was 7.8 litres ... His maximal values were oxygen uptake 5.29 L/min (57.4 mL · kg-1 · min-1) and aerobic power output 450 W (4.88 W/kg) and was ... However, his absolute maximal and submaximal oxygen uptake and power output in 2012 still compared favorably with those ...
Anorexia nervosa
Goldberg SJ, Comerci GD, Feldman L (January 1988). "Cardiac output and regional myocardial contraction in anorexia nervosa". ... Some individuals may also have a decrease in cardiac contractility. Cardiac complications can be life-threatening, but the ... Anorexia nervosa increases the risk of sudden cardiac death, though the precise cause is unknown. Cardiac complications include ... Cardiac complications can include arrhythmias, abnormally slow heart beat, low blood pressure, decreased size of the heart ...
Fick principle
This gives a simple way to calculate the cardiac output:[citation needed] Cardiac Output = oxygen consumption arteriovenous ... Cardiac Output = (125 mL O2/minute × 1.9) / (200 mL O2/L - 150 mL O2/L) = 4.75 L/min Cardiac output may also be estimated with ... "Indirect Measurement of Cardiac Output" Arterial blood Cuschieri, J; Rivers, EP; Donnino, MW; Katilius, M; Jacobsen, G; Nguyen ... In the determination of cardiac output, the substance most commonly measured is the oxygen content of blood thus giving the ...
Blood pressure
MAP is the average of blood pressure over a cardiac cycle and is determined by the cardiac output (CO), systemic vascular ... In the short-term, the greater the blood volume, the higher the cardiac output. This has been proposed as an explanation of the ... The resultant increase in blood volume results in an increased cardiac output by the Frank-Starling law of the heart, in turn ... Most influences on blood pressure can be understood in terms of their effect on cardiac output, systemic vascular resistance, ...
ACE inhibitor
... decrease cardiac output, cardiac index, stroke work, and volume; lower resistance in blood vessels in the kidneys; and lead to ... This leads to cardiac dysfunction and neuromuscular consequences, such as muscle weakness, paresthesia, nausea, diarrhea, and ... This action may reduce the prevalence of malignant cardiac arrhythmias, and the reduction in sudden death reported in large ... Adigun AQ, Asiyanbola B, Ajayi AA (2001). "Cardiac autonomic function in Blacks with congestive heart failure: vagomimetic ...
Bainbridge reflex
Boron, Walter F.; Boulpaep, Emile L. (2011). "Chapter 23: Regulation of Arterial Pressure and Cardiac Output". Medical ... now restores venous return and cardiac output into a vasoconstricted circulation, stimulating the vagus nerve and leading to a ... "Effects on cardiac contractility and stroke volume are insignificant." Bainbridge reflex can be blocked by atropine and can be ... Increased blood volume is detected by stretch receptors (Cardiac Receptors) located in both sides of atria at the venoatrial ...
Obstetric ultrasonography
2007). "A comparison between acoustic output indices in 2D and 3D/4D ultrasound in obstetrics". Ultrasound Obstet Gynecol. 29 ( ... including number of amnionic sacs and chorionic sacs for multiple gestations Fetal cardiac activity Fetal position relative to ... including number of amnionic sacs and chorionic sacs for multiple gestations Embryonic/fetal cardiac activity Assessment of ...
Diseases of poverty
In the developing world, there is a 10 fold increase in cardiac events in the black and urban populations. While cancer affects ... HIV can negatively affect work output, which impacts the ability to generate income. This is crucial in parts of Africa where ...
Sándor J. Kovács
Kovács spends about half of his time on clinical activities, including performing diagnostic cardiac catheterizations involving ... viscosity/relaxation and chamber stiffness for each E-wave analyzed as output. Investigators at the Karolinska Institutet have ... cardiac MRI). Among the results from this work is that the so-called third heart sound, "S3", formerly taught to be ... served as director of the cardiac catheterization laboratory at the St Louis VA Medical Center (1985-1990) advancing through ...
Brian Aldiss
Set in a far future Earth, where the earth has stopped rotating, the Sun has increased output, and plants are engaged in a ... ", "Cardiac Arrest" (novelette), "In the Arena", "All the World's Tears", "Amen and Out", "The Soft Predicament" (novelette), " ...
Sympathoadrenal system
This "sympathoadrenal discharge" causes an increase in heart rate, cardiac output, blood pressure, triglyceride and glucose ...
Blood doping
The cardiac output of an athlete is difficult to manipulate during competitions and the distribution of cardiac output is at ... depends on cardiac output, O2 extraction and hemoglobin mass. ...
Photonic integrated circuit
This way, medical specialists are able to measure both cardiac output and circulating blood volume from outside the body. ... It is highly effective at matching fibre input-output due to its low index and broad transparency window. For more complex PICs ...
Summer Newman
Jake and Nick that she was having Cardiac arrest episodes and suffering from High output heart failure. Summer comes with ...
Cardiac catheterization
... a hemodynamic parameter that relates the cardiac output to a patient's body size. Determination of cardiac output can be done ... For example, in aortic valve area calculation the Gorlin equation can be used to calculate the area if the cardiac output, ... Right heart catheterizations also allow the physician to estimate the cardiac output, the amount of blood that flows from the ... These methods have drawbacks, but give invasive estimations of the cardiac output, which can be used to make clinical decisions ...
Physiological effects in space
Buderer, MC; Rummel, JA; Sawin, CF; Mauldin, DG (July 1973). "Use of the single-breth method of estimating cardiac output ... This, the observed diminished stroke volume (cardiac output) is certainly contributory and, in turn, is a reflection of ... For Apollo 15 to 17 missions, cardiac output measurements were obtained by the single-breath technique. Arteriovenous oxygen ... Additionally, the resistance to fatigue was significantly decreased as well as the ability to sustain work and power output in ...
Liver support system
Cardiac output and heart rate also decreased in the MARS group as a consequence of an improvement in the hyperdynamic ...
Frank-Starling law
If this mechanism did not exist and the right and left cardiac outputs were not equivalent, blood would accumulate in the ... The Frank-Starling mechanism allows the cardiac output to be synchronized with the venous return, arterial blood supply and ... The mechanism is of functional importance because it serves to adapt left ventricular output to right ventricular output. ... and temperature do not affect the relatively constant cardiac output. More than 30 years before the development of the sliding ...
Theodore Holmes Bullock
In one series of famous experiments on the cardiac ganglion in lobsters, Bullock demonstrated that neurons can communicate not ... which he used to explore the neural mechanisms that work together to produce an output in response to a stimulus, both at the ... and built a model that accurately predicted the input-output relationships for a range of different stimuli. Bullock maintained ...
Healthcare in Malawi
In April 2012, the then State President had a cardiac arrest which resulted to his death due to lack of medication both within ... Challenges that lead to this shortage are low outputs of medical training institutions, health worker retention, and disease. ... In 2005, Malawi began to implement its emergency human resource program which concentrates on increasing output of trained ... cardiac or neural related problems, are likely to receive wrong diagnosis and incorrect treatment or medication resulting to in ...
MRI artifact
This is commonly done by using a pulse oximeter or EKG sensor to read a cardiac signal and/or a bellows to read the breathing ... Specific to motion artifact correction in MRI, the Generator Network takes in an image with motion artifacts, and outputs an ... The pilot tone method can also be used prospectively to acquire cardiac images. The Pilot Tone method is great for detecting ... The windows of time where the respiratory and cardiac motions are low are very infrequent, leading to high dead times. However ...
Alcoholic cardiomyopathy
Echocardiogram abnormalities and cardiac catheterization or angiogram to rule out coronary artery blockages, along with a ... frothy material Decreased urine output (oliguria) Need to urinate at night (nocturia) Heart palpitations (irregular heart beat ...
Eccentric training
Eccentric contractions and cardiac output: With lower cost of oxygen how would eccentric exercise affect the heart? A study was ... An increase in cardiac vagal modulation during recovery was also concluded. A lot of studies have been conducted regarding ... The unique trait of greater overloads to the muscle with less strenuous impact on the body, as well as cardiac and respiratory ... Add to these factors disease and cardiac and respiratory illness. Eccentric training enables the elderly, and those with the ...
Nuestra Belleza Latina 2011
Another week cardiac output Paulette Acosta, Giselle dancing with the girls and the pace of Tito el Bambino marked the sixth ...
Acute inhalation injury
Gas exchange is affected by increases in the dispersion of both alveolar ventilation and cardiac output because bronchial and ... is characterized by the abrupt onset of significant hypoxemia and diffuse pulmonary infiltrates in the absence of cardiac ...
Jaswant Singh
On 27 September he suffered cardiac arrest. Singh died at the age of 82 years. His death was triggered as a sign of honour and ... economy of India was one of the fastest growing in the world and one of the leading agricultural nations and second most output ... had a cardiac arrest this morning," Naresh Raj, Army Research and Referral Hospital In June 2020, Singh was admitted to the ...
Management of atrial fibrillation
... and decreased exercise tolerance are related to rapid heart rate and inefficient cardiac output caused by AF. Furthermore, AF ... During cardiac catheterization, a device (such as the Watchman device) consisting of an expandable nitinol frame is introduced ... The left atrial appendage can also be surgically amputated, sutured or stapled simultaneously with other cardiac procedures ... Cardiac glycosides (i.e. digoxin) - have limited use, apart from in the sedentary elderly patient In addition to these agents, ...
Circadian rhythm
Boothroyd CE, Young MW (2008). "The in(put)s and out(put)s of the Drosophila circadian clock". Annals of the New York Academy ... Martino, Tami A.; Young, Martin E. (June 2015). "Influence of the cardiomyocyte circadian clock on cardiac physiology and ... Mistry, Priya; Duong, Austin; Kirshenbaum, Lorrie; Martino, Tami A. (October 2017). "Cardiac Clocks and Preclinical Translation ... or timing of medications can reduce adverse cardiac remodeling in patients with heart disease. Timing of medical treatment in ...
Skin temperature
... in which significant portions of cardiac output are directed to the skin), lowered skinfold thickness (contributes to ... Safar, Peter J; Kochanek, Patrick M (2002-02-21). "Therapeutic Hypothermia after Cardiac Arrest". New England Journal of ... the timing of hypothermia treatments are a crucial consideration to be made when dealing with patients suffering from cardiac ... though there is some evidence of the treatment proving effective hours after cardiac arrest in animal models. Hyperthermia is ...
Ectopic pacemaker
Elevated sympathetic nervous system output Overstimulation from drugs such as caffeine digitalis and catecholamines Cardiac ... Cardiac ectopy Clinical cardiac electrophysiology Electrical conduction system of the heart Phibbs, B. (1963). "Paroxysmal ... It is thus a cardiac pacemaker that is ectopic, producing an ectopic beat. Acute occurrence is usually non-life-threatening, ...
End-systolic volume
... or output of blood by the heart during a single phase of the cardiac cycle. The stroke volume is the difference between the end ... ESV is the lowest volume of blood in the ventricle at any point in the cardiac cycle. The main factors that affect the end- ... End systolic volume can be used clinically as a measurement of the adequacy of cardiac emptying, related to systolic function. ... Clinically, ESV can be measured using two-dimensional echocardiography, MRI (magnetic resonance tomography) or cardiac CT ( ...
Chionodraco rastrospinosus
... wider capillaries and significantly increased blood volume and cardiac output. Tokyo Sea Life Park holds the only captive fish ...
Apparent death
Nishino, H. (2004). "Motor output characterizing thanatosis in the cricket Gryllus bimaculatus". Journal of Experimental ... "Proven cardiac changes during death-feigning (tonic immobility) in rabbits (Oryctolagus cuniculus)". Journal of Comparative ...
Arthropods in culture
Crustaceans are an important source of food, providing nearly 10,700,000 tons in 2007; the vast majority of this output is of ... The peptide GsMtx-4, found in the venom, has been studied for possible use in cardiac arrhythmia, muscular dystrophy, and ... Possible medical uses for other spider venoms have been investigated for the treatment of cardiac arrhythmia, Alzheimer's ...
MicroRNA
Baek D, Villén J, Shin C, Camargo FD, Gygi SP, Bartel DP (September 2008). "The impact of microRNAs on protein output". Nature ... van Rooij E, Sutherland LB, Qi X, Richardson JA, Hill J, Olson EN (April 2007). "Control of stress-dependent cardiac growth and ... cardiac conduction, and cell cycle in mice lacking miRNA-1-2". Cell. 129 (2): 303-17. doi:10.1016/j.cell.2007.03.030. PMID ... "MicroRNA-133 controls cardiac hypertrophy". Nature Medicine. 13 (5): 613-8. doi:10.1038/nm1582. PMID 17468766. S2CID 10097893. ...
Saparmurat Niyazov
Niyazov continued the old practice of demanding yearly quotas in agricultural output, and then blaming and/or sacking deputy ... Niyazov had publicly announced that he had been taking heart medication for the past few years for an unidentified cardiac ... of its domestic output. Additionally, numerous petroleum transportation projects were completed such as a pipeline from the ...
Cardiac Output | HealthLink BC
Cardiac output is the term that describes the amount of blood your heart pumps each minute. Doctors think about cardiac output ... Why is maintaining cardiac output so important?. Sufficient cardiac output helps keep blood pressure at the levels needed to ... What is a normal cardiac output?. A healthy heart with a normal cardiac output pumps about 5 to 6 litres of blood every minute ... When does the body need a higher cardiac output?. During exercise, your body may need three or four times your normal cardiac ...
ATI - Decreased Cardiac Output Flashcards | Quizlet
Structural, functional cardiac disorder that impairs the heart to fill with or eject blood.. Primary cause L sided is LDCA. ... Cardiac glycoside-Dig. Medical TX: ventricular assist device (Intra-aortic balloon pump) ... Watch for R on T (cardiac event-ventric stimulus causes premature depoalrization of cells that havent completely repolarized. ...
e0127 Determination of pulmonary artery pressure and cardiac output in rat | Heart
ICG Impedance Cardiography Noninvasive Cardiac Output Module | NICO100C | Research | BIOPAC
NICO100C is a noninvasive cardiac output amplifier that uses bioimpedance techniques to provide a continuous reading of cardiac ... Noninvasive Cardiac Output Module records specific parameters associated with cardiac output measurements. It incorporates a ... Cardiac Output. Differential Pressure. Electrodermal. Feedback & Markers. Force. General. Goniometers. Microphone. Output. ... Cardiac Output. Differential Pressure. Electrodermal. Feedback & Markers. Force. General. Goniometers. Microphone. Output. ...
Surgery, Cardiac Surgery Division - Research Output - Northwestern Scholars
Commentary: Pediatric cardiac stem cells: Another holy grail?. Backer, C. L., Sep 2019, In: Journal of Thoracic and ... Contemporary left atrial appendage management during adult cardiac surgery. Badhwar, V., Scott Rankin, J., Lee, R., McCarthy, P ... Research Output Research Output per year 1968 1994 1995 1996 1999 2000 2001 2002 2003 2004 2005 2007 2010 2011 2012 2013 2014 ...
Validation of continuous cardiac output technologies: consensus still awaited | Critical Care | Full Text
An ability to measure cardiac output in a continuous and non-invasive fashion is eagerly awaited in the field of intensive care ... cardiac output monitoring system in patients undergoing coronary artery bypass grafting with pulmonary artery cardiac output ... Cardiac output derived from arterial pressure waveform analysis in patients undergoing cardiac surgery: validity of a second ... de Waal EE, Kalkman C, Rex S, Buhre W: Validation of a new arterial pulse contour-based cardiac output device. Crit Care Med ...
Het hartminuutvolume van de hond Cardiac output in the dog - OpenAGRICOLA
Mechanism for decrease in cardiac output with atrial natriuretic peptide in dogs - Fingerprint - Mayo Clinic
thermodilution (measurement of cardiac output) - General Practice notebook
Correction of cardiac output obtained by Modelflow from finger pulse pressure profiles with a respiratory... | Archive ouverte...
Correction of cardiac output obtained by Modelflow from finger pulse pressure profiles with a respiratory method in humans. ... The beat-by-beat non-invasive assessment of cardiac output (Q litre x min(-1)) based on the arterial pulse pressure analysis ... TAM, Enrico et al. Correction of cardiac output obtained by Modelflow from finger pulse pressure profiles with a respiratory ... Correction of cardiac output obtained by Modelflow from finger pulse pressure profiles with a respiratory... ...
Heart Rhythm Considerations in Heart Transplant Candidates and Considerations for Ventricular Assist Devices: International...
... it is reasonable to perform right-heart hemodynamic assessment to verify a patients volume status and cardiac output in order ... Cardiac Re-synchronization Therapy. Recommendations for cardiac re-synchronization therapy (Class I) include: *1. Potential ... In the decisionmaking process before MCSD implantation other cardiac, non-cardiac and technical factors must be considered. The ... In addition to dyssynchrony resulting from underlying cardiac pathologies, some data suggest that cardiac dyssynchrony induced ...
Glucose-insulin-potassium reduces the incidence of low cardiac output episodes after aortic valve replacement for aortic...
Dive into the research topics of Glucose-insulin-potassium reduces the incidence of low cardiac output episodes after aortic ... T1 - Glucose-insulin-potassium reduces the incidence of low cardiac output episodes after aortic valve replacement for aortic ... Glucose-insulin-potassium reduces the incidence of low cardiac output episodes after aortic valve replacement for aortic ... Glucose-insulin-potassium reduces the incidence of low cardiac output episodes after aortic valve replacement for aortic ...
Impact of the inspiratory oxygen fraction on the cardiac output during jugulo-femoral venoarterial extracorporeal membrane...
Since the patient´s cardiac output (CO) can compete with the retrograde aortic ECMO-flow, the aim of this study was to examine ... Cardiac injury was determined by analyzing the amount of lactate dehydrogenase (LDH). During anoxic ventilation the systolic, ... the impact of the inspiratory oxygen fraction on the cardiac function during V-A ECMO therapy. Eighteen male Lewis rats (350- ... From: Impact of the inspiratory oxygen fraction on the cardiac output during jugulo-femoral venoarterial extracorporeal ...
Cardiac Output - TeachMePhysiology
Our first article in this essential section regards our physiological control of cardiac output. Cardiac output is defined as ... In the absence of any influences the SAN pacing rate would be 100 bpm, however heart rate and cardiac output must be able to ... This affects the heart rate (or chronotrophy), which in turn affects the cardiac output. In this article we will discuss how ... This is therefore affected by stroke volume and sympathetic/parasympathetic output to the heart. Stroke volume is affected by ...
Targeting cardiac fibrosis with engineered T cells | Nature
Excessive cardiac fibrosis is an important factor in the progression of various forms of cardiac disease and heart failure2. ... Adoptive transfer of CAR T cells against the fibroblast marker FAP reduces cardiac fibrosis and restores function after cardiac ... We find that cardiac fibroblasts that express a xenogeneic antigen can be effectively targeted and ablated by adoptive transfer ... Upon injury, cardiac fibroblasts in the heart begin to remodel the myocardium by depositing excess extracellular matrix, ...
Cardiac Output - Mr.Karthik G
Determination of cardiac output - WikiLectures
The resting value of cardiac output is about 4-8 l.min-1. A simple equation applies to cardiac output: [math]\displaystyle{ SV ... To date, there is no method for determining cardiac output and cardiac index that is generally considered the gold standard. ... Cardiac output is the amount of blood that the ventricle pumps per unit time (minute). This is actually the flow of blood ... cardiac output based on the use of the Fick principle may become an accurate and inexpensive method of measuring cardiac output ...
Validation of Modelflow Estimates of Cardiac Output in Hemodialysis Patients. - Oxford Big Data Institute
For cardiac output 2 h after calibration, agreement was -5.2 ± 57.5% (correlation 0.6, P , 0.001). Dynamic changes in blood ... A gold standard cardiac output measurement can be obtained using ultrasound dilution in patients with arterio-venous fistulae. ... Continuous cardiac output was measured in 124 hemodialysis sessions in 27 patients using a volume-clamp device (Finometer PRO ... For baseline cardiac output before calibration, agreement between volume-clamp and ultrasound dilution measurements was poor, ...
End-tidal carbon dioxide during extremely low cardiac output<...
A number of studies have shown that expired CO2 concentration is closely related to cardiac output, but that cardiac output was ... A number of studies have shown that expired CO2 concentration is closely related to cardiac output, but that cardiac output was ... A number of studies have shown that expired CO2 concentration is closely related to cardiac output, but that cardiac output was ... A number of studies have shown that expired CO2 concentration is closely related to cardiac output, but that cardiac output was ...
Low-Cost Cardiac Output Monitor - NODE.Health
VYAIRE MEDICAL CARDIAC OUTPUT PROBES - QPS Medicals
Noise-robust Bioimpedance Approach for Cardiac Output Measurement
Machine Learning algorithms trained on electrical-impedance tomography data are presented for portable cardiac monitoring. The ... Noise-robust Bioimpedance Approach for Cardiac Output Measurement. Ethan K Murphy, Justice Amoh, Saaid H Arshad, Ryan J Halter ... A continuous, non-invasive, telemonitoring device that can accurately monitor cardiac metrics could greatly help this ... data are presented for portable cardiac monitoring. The approach was validated on a simulated thorax and a measured tank ...
Decreased cardiac output: an integrative review. | Rev Bras Enferm;76(2): e20220265, 2023. | MEDLINE
Decreased cardiac output: an integrative review. Silva, Ricardo Costa da; Gondim, Micaelle Costa; Melo, Gabriela Moreira; Silva ... FINAL CONSIDERATIONS the elements for decreased cardiac output, identified in the literature, add evidence that justifies the ... for nursing diagnosis decreased cardiac output. METHOD:. an integrative literature review, conducted between September and ...
IMSEAR at SEARO: Determinates and distribution of high cardiac output in chronic severe anaemia.
Levosimendan not effective in reducing postoperative low cardiac output syndrome in select heart surgery patients | 2 Minute...
Levosimendan not effective in reducing postoperative low cardiac output syndrome in select heart surgery patients. byQasim ... Overall, the results of this study suggest levosimendan does not help reduce the risk of low cardiac output failure in patients ... While current management of low cardiac output syndrome includes use of inotropic agents or left ventricular assist devices, ... Relevant Reading: Predictors of Low Cardiac Output Syndrome After Isolated Coronary Artery Bypass Surgery: Trends Over 20 Years ...
Free Essay Sample: Factors Affecting Cardiac Output - Essay Homework Help
Free Essay Sample: Factors Affecting Cardiac Output. Free Essay: Factors Affecting Cardiac Output. Cardiac output refers to the ... Cardiac output can be measured in different ways including dm3/min. During a systole phase, cardiac output refers to the ... This decreases cardiac output to even critical levels.. Assessing cardiac output is vital because it determines the actual ... There are several factors affecting cardiac output.. Two major factors affect cardiac output. These are the heart rate and ...
Pulmonary Veno-Occlusive Disease: Background, Pathophysiology, Etiology
Dartmouth Engineering | Kofi M. Odame
Cardiac output monitoring Cardiac output monitoring. We are developing a device for continuous, non-invasive monitoring of a ... In particular, we have been pursuing EIT for cardiac output monitoring (a related application) and EIT as a surrogate for ... Electrical impedance tomography in pulmonary and cardiac applications Electrical impedance tomography in pulmonary and cardiac ... patients cardiac hemodynamic status, allowing for physician intervention before the clinical symptoms of decompensation are ...
NoninvasiveThermodilutionStrokeContinuousPostoperativeMeasurement of cardiac outputMyocardialHigh cardiac outputHigher cardiac outputInadequate cardiac outputPatient'sAtrialCirculatoryDecreaseIncrease in cardiacSystemic vascular rIncreasesCardiovascularExtracorporeal membrane oxOxygenAcuteAffect cardiacControl cardiacArrhythmiasPhysiologicalExerciseIndicationsImpairmentEquationOrthostaticMusclesRespiratoryLeft ventricularSympatheticPerfusionAdultCatecholamineAbstractAorticTissueRefractoryPacemakerSurgeryPatientsBloodSyndromeClinicalMeasurementsMetabolicFailureCentersRight ventricleIndex
Noninvasive6
- Noninvasive cardiac output monitoring in a porcine model using the inspired sinewave technique: a proof-of-concept study. (ox.ac.uk)
- We present a novel noninvasive and fully automated method that uses the inspired sinewave technique to continuously monitor cardiac output (Q˙IST). (ox.ac.uk)
- CONCLUSIONS: The inspired sinewave technique provides continuous and noninvasive monitoring of cardiac output, with a 'marginal-good' trending ability compared with cardiac output based on thermodilution. (ox.ac.uk)
- In this study, noninvasive measurements of cardiac output and O 2 consumption were performed to estimate the blood flow to and efficiency of the respiratory muscles that are used in elevated inspiratory work loads. (nau.edu)
- Introduction: Impedance cardiography (IC) derived from morphological analysis of the thoracic impedance signal is now commonly used for noninvasive assessment of cardiac output (CO) at rest and during exercise. (northumbria.ac.uk)
- In 1972, Aoyagi was investigating a noninvasive cardiac output device and discovered that arterial pulsatile "noise" interfering with the accurate dye dilution curve contains important information about the oxygenation of blood in a person's arteries. (ieee.org)
Thermodilution3
- Nowadays, the cardiac index is usually calculated automatically using software-integrated relationships evaluating measurement results, such as the thermodilution method. (wikilectures.eu)
- BACKGROUND: Cardiac output (Q˙) monitoring can support the management of high-risk surgical patients, but the pulmonary artery catheterisation required by the current 'gold standard'-bolus thermodilution (Q˙T)-has the potential to cause life-threatening complications. (ox.ac.uk)
- Measurements included: leg blood flow (LBF, thermodilution), cardiac output (Q), and oesophageal pressure (P(pl), index of pleural pressure). (nih.gov)
Stroke5
- This is therefore affected by stroke volume and sympathetic/parasympathetic output to the heart. (teachmephysiology.com)
- Despite the increasing popularity of marathon running, there are no data on the responses of stroke volume (SV) and cardiac output (CO) to exercise in this context. (archives-ouvertes.fr)
- Taken together it's referred to as bradycardia-tachycardia or tachy-brady syndrome This is a type of sick sinus syndrome and can be associated with the heart rhythm disorder atrial fibrillation and raise a person's risk for complications that include stroke and sudden death or cardiac arrest. (sawanschool.com)
- New diagnostic techniques (transesophageal echocardiography, cardiac magnetic resonance imaging) have allowed clinicians to better characterize well-established sources of embolism and to discover other potential etiologies of cardioembolic stroke (see the following image). (medscape.com)
- the daggers [ † ] indicate emboli originating in the venous circulation or right heart that cause ischemic stroke via abnormal cardiac or pulmonary shunting around the pulmonary capillary bed. (medscape.com)
Continuous7
- An ability to measure cardiac output in a continuous and non-invasive fashion is eagerly awaited in the field of intensive care practice. (biomedcentral.com)
- This is not the case for studies assessing continuous monitoring of cardiac output. (biomedcentral.com)
- Continuous cardiac output was measured in 124 hemodialysis sessions in 27 patients using a volume-clamp device (Finometer PRO). (ox.ac.uk)
- A continuous, non-invasive, telemonitoring device that can accurately monitor cardiac metrics could greatly help this population, reducing unnecessary hospitalizations and cost. (dartmouth.edu)
- We are developing a device for continuous, non-invasive monitoring of a patient's cardiac hemodynamic status, allowing for physician intervention before the clinical symptoms of decompensation are observed, and potentially avoiding hospitalization. (dartmouth.edu)
- Continuous cardiac output and global ejection fraction were measured to indicate hemodynamics. (spandidos-publications.com)
- Cardiac arrest leads to a continuous decrease in intestinal blood flow and an increase in intestinal permeability, subsequently triggering systemic inflammatory responses, which could be the underlying mechanism to cause the sepsis ( 3-5 ). (spandidos-publications.com)
Postoperative2
- Another therapeutic approach to postoperative low-cardiac-output syndrome is atrial decompression by creating an atrial septal defect. (houstonmethodist.org)
- However there were fewer patients with low postoperative cardiac index in S group (11% in S vs 35% in control group, P (bvsalud.org)
Measurement of cardiac output1
- Without this the monitor may be shown to track changes accurately but may not be a reliable measurement of cardiac output. (biomedcentral.com)
Myocardial3
- In this subset of patients, there is a higher risk of low cardiac output syndrome that increases the frequency of complications such as myocardial infarction, pulmonary impairment, or renal failure. (2minutemedicine.com)
- A refractory low-cardiac-output syndrome is, in pediatric patients, most often due to impaired myocardial function after corrective surgery in congenital heart disease. (houstonmethodist.org)
- Acute hypoxia causes an increase in heart rate, myocardial contractility, and cardiac output. (marinemedicalsociety.in)
High cardiac output2
- IMSEAR at SEARO: Determinates and distribution of high cardiac output in chronic severe anaemia. (who.int)
- Vasoplegic syndrome (VS) is defined as a syndrome of low systemic vascular resistance (SVR) in the presence of normal or high cardiac output 1-4 . (anesthesiaejournal.com)
Higher cardiac output2
- When does the body need a higher cardiac output? (healthlinkbc.ca)
- The physiological mechanism responsible for this BP increase is a higher cardiac output (CO), but not a higher total peripheral resistance (TPR). (immramainstitute.com)
Inadequate cardiac output2
- This can lead to inadequate cardiac output, or other problems. (cdc.gov)
- Cardiogenic shock is defined as inadequate cardiac output to support organ function. (sawanschool.com)
Patient's4
- 1992) proposed, for veterinary cardiac patients, a method for assessment which is based on information from the patient's clinical status, that is easy to implement and can be widely used. (vin.com)
- Simply put, radiation dose and image quality must be compared in every patient and not just between patient groups, because discrepancies in the patient's shape, cardiac output, lesion pathology, and other factors are highly individualized, they wrote. (auntminnie.com)
- Diagnostic cardiac measurement bedside with 12SL* ECG analysis and two-way integration to the MUSE* cardiology information system, for validated access to a patient's history and serial comparison of cardiac status. (georgiananesthesia.com)
- Diagnostic quality of 12SL analysis and automatic, initial interpretation, along with two-way integration to the MUSE* cardiology information system, enable fast, validated access to a patient's 12SL history and serial comparison of cardiac status. (georgiananesthesia.com)
Atrial2
- Sources of cardioembolic embolism include valvular diseases, left ventricular and atrial thrombi, cardiac tumors, and paradoxical emboli, as well as other sources. (medscape.com)
- Atrial myxoma , * cardiac sarcoma , endocardial fibroelastoma, and metastatic disease are associated with cardiac tumors and cardioembolic emboli. (medscape.com)
Circulatory3
- In low-cardiac-output syndrome refractory to all therapeutic measures mechanical circulatory support is the final method to keep the patient alive. (houstonmethodist.org)
- In 11 children with refractory low-cardiac-output syndrome mechanical circulatory support was performed. (houstonmethodist.org)
- Meanwhile, neonates, infants, children and adults with congenital and acquired cardiac disease may require mechanical circulatory support secondary to hemodynamic instability due to their critical cardiac lesions. (sts.org)
Decrease13
- They decrease cardiac output are for decreased taste may be allowed to lower extremities may develop during sustained transport of orthostatic syndromes. (superfun.space)
- Use in cardiac output decrease hospitalization of the cardiac output in tissue necrosis and enhanced arteriolar resistance, vasodilation and spleen and in. (superfun.space)
- In cardiac output decrease absorption of acute phase of av block its extra stress the decreasing the tte examinations performed at dubai airports. (superfun.space)
- What is cardiac output decrease in others who was mainly observed that it must be. (superfun.space)
- You for cardiac output decrease sv. (superfun.space)
- Meditation techniques in cardiac output decrease. (superfun.space)
- Also decrease cardiac output is decreased during exercise training programme for? (superfun.space)
- Normal cardiac output decrease in decreased. (superfun.space)
- Cardiovascular system for decreased cardiac output decrease digoxin makes it. (superfun.space)
- When the decrease volume rather than for tips procedure induced increase output and treatment of orthostatic hypotension after catheterization. (superfun.space)
- The cardiac function was impaired after resuscitation, and a decrease of IFN‑γ as well as IL‑2 and an increase of IL‑4 as well as IL‑10 suggested the immune imbalance. (spandidos-publications.com)
- However, provided there is no decrease in cardiac output or ischemia, brief profound hypoxemia in healthy humans is well tolerated without evidence of acidosis or lasting cognitive impairment. (nih.gov)
- A decrease in RV output leads to a decrease in LV filling, which results in decreased cardiac output. (medscape.com)
Increase in cardiac2
- This increase in cardiac preload typically results in an increase in CO through an increase in both HR and SV. (medscape.com)
- These results indicate that the increase in cardiac output was a metabolic effect of the increased work load and was not caused primarily by the influence of the highly negative intrathoracic pressure on venous return. (nau.edu)
Systemic vascular r1
- To investigate whether peripheral vascular compensatory mechanisms are preserved after orthotopic heart transplantation (OHT), we longitudinally observed systemic vascular resistance (SVR) and cardiac output (CO) during acute cellular rejection. (elsevier.com)
Increases9
- In other words, in obese people of a given height, weight increases faster than body surface area and cardiac output. (wikilectures.eu)
- Cardiac index decreases in heart failure and failure increases in conditions associated with hyperkinetic circulation (eg fever, anemia, arteriovenous shunts, avitaminosis B1, etc. (wikilectures.eu)
- Cardiac output increases when the heart rate increases . (bestessayservices.com)
- Once the heart has sufficient resting phase or diastole, the output volume increases. (bestessayservices.com)
- This is because the cardiac muscle increases the ejection force of the heart. (bestessayservices.com)
- Cardiac output increases because the heart is allowed to pump out more blood volume. (bestessayservices.com)
- Increases in cardiac output and O 2 consumption in response of 4.5 min laoded breathing averaged 1.84 l/min and 108 ml/min, respectively. (nau.edu)
- Disodic adenosine monophosphate: Improves cardiac and skeletal muscle output & increases blood supply to muscles. (bodaxvet.com)
- Heptaminol hydrochloride: Increases cardiac output to meet increased demand during & following exercise & training. (bodaxvet.com)
Cardiovascular2
- The beat-by-beat non-invasive assessment of cardiac output (Q litre x min(-1)) based on the arterial pulse pressure analysis called Modelflow can be a very useful tool for quantifying the cardiovascular adjustments occurring in exercising humans. (unige.ch)
- These data suggested that removal of sympathetic cardiac influence improved cardiovascular stability as indicated by a diminished LF ABP variability, which was related to an enhanced cardiac responsiveness. (unthsc.edu)
Extracorporeal membrane ox2
Oxygen3
- During exercise, your body may need three or four times your normal cardiac output, because your muscles need more oxygen when you exert yourself. (healthlinkbc.ca)
- Sufficient cardiac output helps keep blood pressure at the levels needed to supply oxygen-rich blood to your brain and other vital organs. (healthlinkbc.ca)
- The body in all of its wonderful aspects will compensate for the fall in blood levels by increasing cardiac output (as long as that is not impaired) in order to increase oxygen delivery and extraction at the site of the tissues. (criticalcarenow.com)
Acute1
- First determine whether the setting in which the event occurred, or associated symptoms or signs, suggests a direct result of a disease requiring prompt attention, such as hypoglycemia , meningitis , head trauma , cardiac arrhythmia , or acute pulmonary embolism . (mhmedical.com)
Affect cardiac2
- Two major factors affect cardiac output. (bestessayservices.com)
- Back in the laboratory, they showed in the mouse heart that genetic and pharmacological modulation of clock genes can affect cardiac tolerance to ischaemia-reperfusion injury. (fichier-pdf.fr)
Control cardiac2
- Fan, Z. & Guan, J. Antifibrotic therapies to control cardiac fibrosis. (nature.com)
- Design: Ten anesthetized, intubated, and mechanically ventilated swine (weight, 43 to 102 kg) were placed on two ventricular assist devices in order to control cardiac output. (elsevier.com)
Arrhythmias1
- Indications for cardiac ECMO include low cardiac output syndrome (often peri-operative), refractory arrhythmias, cardiogenic shock, septic shock, and cardiopulmonary resuscitation. (sts.org)
Physiological2
- Our first article in this essential section regards our physiological control of cardiac output. (teachmephysiology.com)
- Critically ill patients in the emergency department (ED) have shorter safe apnoea times due to physiological distress from decreased cardiac output, increased shunting and. (annals.edu.sg)
Exercise1
- Generally speaking, your heart beats both faster and stronger to increase cardiac output during exercise. (healthlinkbc.ca)
Indications1
- Established and evolving indications for cardiac resynchronisation. (jhltonline.org)
Impairment2
- Lab values observed contractile impairment of the procedure, decreased cardiac output rises, kenchaiah s gallop may lodge in. (superfun.space)
- That is the reason why, in some cases, patients are clinically compensated (not necessarily due to the effect of drugs), besides having significant impairment of cardiac function. (vin.com)
Equation1
- 0001). The best-fit line by least-squares analysis produced the equation: P FT CO 2 =4.98+0.012 [cardiac index] (r 2 =.82). (elsevier.com)
Orthostatic2
- It can result from pancerebral hypoperfusion caused by vasovagal reflexes, orthostatic hypotension, or decreased cardiac output, or from selective hypoperfusion of the brainstem resulting from vertebrobasilar ischemia. (mhmedical.com)
- The aim of this project was to test the hypothesis that sympathetic cardiac blockade was beneficial in maintaining ABP stability during orthostatic challenge. (unthsc.edu)
Muscles2
- Combine lower cardiac output and higher stress, and tendons (which are like fibrous chords that attach muscles to bone) can reach a point where they never have time to fully recover. (plumdragonherbs.com)
- the immune system cell membranes (protects cells from damage) for the prevention of muscle degenerative conditions for cardiac & skeletal muscles. (bodaxvet.com)
Respiratory4
- Correction of cardiac output obtained by Modelflow from finger pulse pressure profiles with a respiratory. (unige.ch)
- Of course, the variability of heart rate also causes some variability in cardiac output - for some methods, it is recommended that cardiac output be measured at the end of the expiration period (or at another fixed point in the respiratory cycle). (wikilectures.eu)
- Kynoselen is a cardiac & respiratory tonic & selenium supplement. (bodaxvet.com)
- With 45 years of experience since the first successful use of ECMO to support a neonate with respiratory failure, ECMO has been utilized to support neonates, infants, children, and adults with a variety of congenital and acquired respiratory and cardiac diseases. (sts.org)
Left ventricular3
- While current management of low cardiac output syndrome includes use of inotropic agents or left ventricular assist devices, some studies have suggested that use of levosimendan, a calcium channel sensitizer, may help reduce occurrence of the syndrome. (2minutemedicine.com)
- The present study is a randomized trial that investigated whether a 24-hour preoperative infusion of levosimendan in patients with left ventricular dysfunction undergoing CABG with bypass would reduce the risk of subsequent low cardiac output syndrome. (2minutemedicine.com)
- Overall, the results of this study suggest levosimendan does not help reduce the risk of low cardiac output failure in patients with left ventricular dysfunction that are undergoing CABG with cardiopulmonary bypass. (2minutemedicine.com)
Sympathetic2
- Previous studies have suggested that sympathetic cardiac blockade enhances baroreflex function, whereas parasympathetic blockade diminishes baroreflex sensitivity and elicits arterial blood pressure (ABP) instability. (unthsc.edu)
- In 8 young healthy subjects, measurements were taken before and after sympathetic cardiac blockade (β 1 -adrenoceptor blockade via metoprolol) in combination with or without parasympathetic blockade (atropine) at rest and during lower body negative pressure (LBNP). (unthsc.edu)
Perfusion1
- It has been reported that there is an inconsistency between systemic blood flow and tissue perfusion in patients with cardiac arrest ( 7 , 8 ), but the microcirculation is correlated with the prognosis of patients ( 7 , 9-11 ). (spandidos-publications.com)
Adult3
- We omitted the cardiac output and for individual patient be used in adult patients with modification from an increase in total thoracic surgery or with. (superfun.space)
- Sections include Pearson's General Thoracic, Esphageal, Adult Cardiac, and Pediatric and Congenital Cardiac Surgery. (sts.org)
- Adult and Pediatric Cardiac Surgery. (sts.org)
Catecholamine1
- Catecholamine also affects cardiac output. (bestessayservices.com)
Abstract1
- abstract = "Study objective: A number of studies have shown that expired CO2 concentration is closely related to cardiac output, but that cardiac output was not controlled as an independent variable. (elsevier.com)
Aortic2
- it is based on the principle that the frequency of changes in aortic volume with the cardiac cycle can be detected by alternating electrical signals across the thorax. (biomedcentral.com)
- In two-dimensional mode were studied the cardiac chambers, especially the left atrium, the appearance of the mitral valve, the presence of pericardial effusion, the transverse diameter of mitral annulus and aortic root (Thomas et al . (vin.com)
Tissue2
- Upon injury, cardiac fibroblasts in the heart begin to remodel the myocardium by depositing excess extracellular matrix, resulting in increased stiffness and reduced compliance of the tissue. (nature.com)
- It is a systemic disease defined as a cardiac dysfunction that causes insufficient blood supply to meet tissue metabolic needs, under normal pulmonary venous return, or only after high filling pressures(1). (bvsalud.org)
Refractory2
- Improving the contractile state of the myocardium using enoximone was attempted in 16 neonates with low-cardiac-output syndrome refractory to catecholamines (Dosage: loading-dose 1 mg/kg in 10 min intravenously, followed by an infusion of 10 mcg/kg/min). (houstonmethodist.org)
- All non-responders succumbed due to refractory low-cardiac-output syndrome, while only one responder died in low-cardiac-output syndrome. (houstonmethodist.org)
Pacemaker1
- The heart rate is established by the Sinoatrial Node (SAN) - the pacemaker of the cardiac muscle. (teachmephysiology.com)
Surgery5
- In their study they demonstrate that Bioreactance (Cheetah Medical Inc., Tel Aviv, Israel) can track changes in cardiac output in patients after cardiac surgery and conclude that its performance is similar to that of the Vigileo version 1.01 (Edwards Lifesciences, Irvine, CA, USA). (biomedcentral.com)
- Those who experience pre-existing or current active cardiac disease, orthopedic surgery or cardiac surgery have been initially shown to have higher risk and mortality with more restricted transfusion goals. (criticalcarenow.com)
- 3.Arevalo VN, Bullerwell ML. Methylene Blue as an Adjunct to Treat Vasoplegia in Patients Undergoing Cardiac Surgery Requiring Cardiopulmonary Bypass: A Literature Review. (anesthesiaejournal.com)
- Despite this, over 70,000 IABP insertions are undertaken annually in the United States alone, with an incidence of between 5-10% amongst all patients undergoing cardiac surgery. (biomedcentral.com)
- STS Cardiothoracic Surgery E-Book from The Society of Thoracic Surgeons provides expert guidance for Cardiac and Thoracic Surgery. (sts.org)
Patients5
- Validation of Modelflow Estimates of Cardiac Output in Hemodialysis Patients. (ox.ac.uk)
- A gold standard cardiac output measurement can be obtained using ultrasound dilution in patients with arterio-venous fistulae. (ox.ac.uk)
- This tool, which has been FDA approved, will enable patients to understand their cardiac issues in a more accurate manner, while reducing their long-term spending. (nodehealth.org)
- The microcirculation is correlated with the prognosis of patients with cardiac arrest and changes after resuscitation. (spandidos-publications.com)
- Heart failure (HF) patients have a reduced cardiac reserve and increased work of breathing. (nih.gov)
Blood10
- Cardiac output is the term that describes the amount of blood your heart pumps each minute. (healthlinkbc.ca)
- A healthy heart with a normal cardiac output pumps about 5 to 6 litres of blood every minute when a person is resting. (healthlinkbc.ca)
- The most convenient method for estimating the cardiac output requires the measurement of blood cooling following the injection of cold saline. (gpnotebook.com)
- Cardiac output is the amount of blood that the ventricle pumps per unit time (minute) . (wikilectures.eu)
- Conclusion: Under conditions of constant minute ventilation, P ET CO 2 correlated closely with cardiac index over a large range of blood flow rates, including extremely low rates. (elsevier.com)
- Cardiac output refers to the amount or volume of the blood that the heart pumps through the right or left ventricle in an interval of a single minute. (bestessayservices.com)
- This happens in terms of cardiac volumes that measure the blood that the heart releases into the other parts of the body. (bestessayservices.com)
- Decreased after-load or the arterial blood pressure may also cause an increase in the cardiac output because it reduces the input resistance that the heart has to overcome while pumping blood to the vasculature. (bestessayservices.com)
- In healthy humans, brief profound hypoxia produces increased minute ventilation and increased cardiac output, but little or no alteration in blood chemistry. (nih.gov)
- Because the right coronary artery originates from the aorta, decreased LV output causes decreased right coronary blood flow and ischemia to the RV wall. (medscape.com)
Syndrome1
- Primary end point included a composite of 3 elements reflecting low cardiac output syndrome. (2minutemedicine.com)
Clinical2
- There was minimal bias and reasonable correlation for cardiac output 2 h post-calibration, but limits of agreement remained too wide to meet current clinical standards. (ox.ac.uk)
- 95.7 to 53 Bioheart MyoCell beats Capricor Cardiac Stem Cells in similar clinical studies - 6 min. (leonhardtventures.com)
Measurements1
- 59% of P ET CO 2 measurements were made at cardiac indexes of less than 1,313 mL/min/m 2 (30 mL/min/kg). (elsevier.com)
Metabolic1
- There a cardiac function in the metabolic derangement of immobility in. (superfun.space)
Failure4
- Regardless of underlying etiology, heart failure may be associated with an abnormal sequence of ventricular contractions, referred to as cardiac or ventricular dyssynchrony. (jhltonline.org)
- Cardiac resynchronization therapy for heart failure. (jhltonline.org)
- In for heart failure and output: the dreariness and worsen cardiac death is calculated as the first indicator, hsu la idea that. (superfun.space)
- Journal of Cardiac Failure. (elsevier.com)
Centers1
- This trial was designed as a randomized, double-blind, 2-arm, parallel-group, placebo-controlled study within thirteen participating cardiac surgical centers. (2minutemedicine.com)
Right ventricle1
- During a systole phase, cardiac output refers to the combined amount of output of both the left ventricle and the right ventricle. (bestessayservices.com)
Index1
- To date, there is no method for determining cardiac output and cardiac index that is generally considered the gold standard. (wikilectures.eu)