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
Hemodynamics
The rate of blood flow out of the heart (often expressed in L/min) is known as the cardiac output (CO). ... the cardiac output).[8] Because of this, the velocity of blood flow across each level of the circulatory system is primarily ... between the peak systolic velocity and the minimum diastolic velocity divided by the mean velocity during the cardiac cycle. ...
Ventricle (heart)
Cardiac output 4.0-8.0 L/minute[5] 4.0-8.0 L/minute[5] ... Cardiac dysrhythmia is an irregular heartbeat that can occur in ... Lang, Roberto M. (1985). "Adverse Cardiac Effects of Acute Alcohol Ingestion in Young Adults". Annals of Internal Medicine. 102 ... During most of the cardiac cycle, ventricular pressure is less than the pressure in the aorta, but during systole, the ... The most severe form of arrhythmia is ventricular fibrillation which is the most common cause of cardiac arrest and subsequent ...
Thyroid hormones
Increases cardiac output. *Increases heart rate. *Increases ventilation rate. *Increases basal metabolic rate ...
Hypocalcaemia
Effects on cardiac output *Negative chronotropic effect, or a decrease in heart rate. ... Cardiac arrest.[1][2]. Causes. Hypoparathyroidism, vitamin D deficiency, kidney failure, pancreatitis, calcium channel blocker ... The neuromuscular excitability, cardiac electrical instability, and associated symptoms are then not cured or relieved by ... The implications of intermittent QTc prolongation predisposes to life-threatening cardiac electrical instability (and this is ...
Thiamine deficiency
Anand, I. S.; Florea, V. G. (2001). "High Output Cardiac Failure". Current Treatment Options in Cardiovascular Medicine. 3 (2 ... In advanced cases, the disease may cause high-output cardiac failure and death. ... Vasodilation leading to decreased systemic vascular resistance, and high output heart failure[20] ... "Cardiac Beriberi: Two Modes of Presentation". BMJ. 3 (5774): 567-9. doi:10.1136/bmj.3.5774.567. PMC 1798841 . PMID 5571454 ...
Eccentric training
Eccentric contractions and cardiac output: With lower cost of oxygen how would eccentric exercise affect the heart? A study was ... 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 ... An increase in cardiac vagal modulation during recovery was also concluded.[17] ...
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 ... Volumetric definition of the heart in systole was first described by Adolph Fick as cardiac output. Fick may be readily and ... As a consequence, cardiac output becomes diminished. When the left ventricular diastolic pressure is elevated, venous pressure ... As patients display normal ejection fraction but reduced cardiac output they are especially sensitive to changes in preloading ...
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 ...
Malnutrition
Bradycardia, hypotension, reduced cardiac output, small vessel vasculopathy. Neurologic. Global development delay, loss of knee ... have decreased urine output, and may be cool to touch.[42] ...
Anorexia nervosa
Goldberg SJ, Comerci GD, Feldman L (1988). "Cardiac output and regional myocardial contraction in anorexia nervosa". J Adolesc ... Cardiac complications[edit]. Anorexia nervosa increases the risk of sudden cardiac death, though the precise cause is unknown. ... Some individuals may also have a decrease in cardiac contractility. Cardiac complications can be life-threatening, but the ... Cardiac complications can include arrhythmias, abnormally slow heart beat, low blood pressure, decreased size of the heart ...
Cyanosis
Reduced cardiac output (e.g. heart failure or hypovolaemia). *Cold exposure. *Chronic obstructive pulmonary disease (COPD) ...
Maternal physiological changes in pregnancy
Cardiac output (Lit./Min.): 6.26 Stoke 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 ... Increases in blood sugar, breathing, and cardiac output are all expected changes that allow a pregnant woman's body to ... The increased GFR leads to increased urinary output, which the woman may experience as increased urinary frequency. ...
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. ... and high output heart failure Elevated jugular venous pressure Dyspnea (shortness of breath) on exertion Paroxysmal nocturnal ...
Pregnancy
Increases in blood sugar, breathing, and cardiac output are all required. Levels of progesterone and oestrogens rise ...
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 ...
Mean arterial pressure
Total Peripheral Resistance = (Mean Arterial Pressure - Mean Venous Pressure) / Cardiac Output Therefore, Mean arterial ... In medicine, the mean arterial pressure (MAP) is an average blood pressure in an individual during a single cardiac cycle.[1] ...
Maternal physiological changes in pregnancy
Cardiac output increases throughout early pregnancy, and peaks in the third trimester, usually to 30-50% above baseline.[3] ... Increases in blood sugar, breathing, and cardiac output are all expected changes that allow a pregnant woman's body to ... 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. ...
Hypoxia (medical)
Tissue hypoxia from low oxygen delivery may be due to low haemoglobin concentration (anaemic hypoxia), low cardiac output ( ... "Effect of acute progressive hypoxemia on cardiac output and plasma excess lactate". Ann Surg. 177 (2): 199-202. doi:10.1097/ ...
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 ...
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.) Stroke volume (= end-diastolic ... 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 ...
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 ...
Inert gas asphyxiation
They do not suppress cardiac output or alter the function of the hemoglobin. Rather, they cause asphyxiation only when present ... Loss of consciousness may be accompanied by convulsions[10] and is followed by cyanosis and cardiac arrest. About 7 minutes of ...
Hypophosphatemia
Muscle dysfunction and weakness - This occurs in major muscles, but also may manifest as: diplopia, low cardiac output, ... Cardiac monitoring is also advised.. See also[edit]. *X-linked hypophosphatemia. References[edit]. *^ a b c d e f g h i j k l m ...
Hyoscyamine
It increases cardiac output and heart rate, lowers blood pressure and dries secretions.[1] It may antagonize serotonin.[2] At ...
Diving reflex
... and cardiac output remain higher than normal during immersion. The increased respiratory and cardiac workload causes increased ... Bradycardia and cardiac output[edit]. Bradycardia is the response to facial contact with cold water: the human heart rate slows ... humans also display reduced left ventricular contractility and diminished cardiac output,[8][17] effects that may be more ... but bradycardia reduces the overall cardiac output, particularly due to the diving reflex in breath-hold diving.[15] ...
Ventricular tachycardia
Pulseless VT is associated with no effective cardiac output, hence, no effective pulse, and is a cause of cardiac arrest. In ... Some VT is associated with reasonable cardiac output and may even be asymptomatic. The heart usually tolerates this rhythm ... In those with cardiac arrest due to ventricular tachycardia, survival is about 45%.[1] An implantable cardiac defibrillator or ... 7% of people in cardiac arrest[1]. Ventricular tachycardia (V-tach or VT) is a type of regular, fast heart rate that arises ...
Sembap bahasa Indonesia, ensiklopedia bebas
Kelainan yang terkait dengan high cardiac output *Arteriovenous fistula. *Beriberi. *Anemia. *Tirotoksikosis ...
Otto Friedrich Ranke
Bloodless measurement of cardiac output) Z. Biol. 90, 467 (1930). 213 citations on Google Scholar (December 13, 2016) Wolf- ...
Radiography
These electron are then focus using electron lenses inside the intensifier to an output screen coated with phosphorescent ... The image from the output can then be recorded via a camera and displayed.[21] ...
Nephrology
A 24-hour urine collection can be used to quantify daily protein loss (see proteinuria), urine output, creatinine clearance or ...
Reptile
Sustained energy output (joules) of a typical reptile versus a similar size mammal as a function of core body temperature. The ... cardiac involuntary muscles.[68] The main structures of the heart are the sinus venosus, the pacemaker, the left atrium, the ... It is generally assumed that reptiles are unable to produce the sustained high energy output necessary for long distance chases ... mammal has a much higher peak output, but can only function over a very narrow range of body temperature. ...
Dieting
One of the most important things to take into consideration when either trying to lose or put on weight is output versus input ... as well as improved cardiac health.[24] ...
Muscle spindle
... implications for motor output". Muscle Nerve. 31 (2): 135-56. CiteSeerX 10.1.1.126.3583. doi:10.1002/mus.20261. PMID 15736297. ... "Static and dynamic gamma-motor output to ankle flexor muscles during locomotion in the decerebrate cat". J. Physiol. 571 (Pt 3 ...
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 ...
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 ...
Artificial cardiac pacemaker
The electrodes are placed in contact with the outer wall of the ventricle (epicardium) to maintain satisfactory cardiac output ... These studies demonstrated the restoration of heart rate, cardiac output and mean aortic pressures in animal subjects with ... Main article: Cardiac resynchronization therapy. Cardiac resynchronization therapy (CRT) is used for people with heart failure ... Lidwell M C, "Cardiac Disease in Relation to Anaesthesia" in Transactions of the Third Session, Australasian Medical Congress, ...
Intravenous therapy
The best way to determine if a person will benefit from fluids is by doing a passive leg raise followed by measuring the output ... Advanced cardiac life support (ACLS). *Advanced trauma life support (ATLS). *Neonatal Resuscitation Program (NRP) ...
Radiation therapy
Taylor CW, Nisbet A, McGale P, Darby SC (December 2007). "Cardiac exposures in breast cancer radiotherapy: 1950s-1990s". ... and fluence output rate (dose rate) of the medical linear accelerator. VMAT has an advantage in patient treatment, compared ...
g-suit
... pilot utilizes the g-race suit interactively by muscle straining and breathing techniques to achieve an improved cardiac output ...
Early warning score
Some systems also assign scores to other parameters including urine output, oxygen saturation, flow rate of oxygen ... Scores were developed in the late 1990s when studies showed that in-hospital deterioration and cardiac arrest was often ...
Vasospasm
... factors decreases the contractile force that the myocardium must exert in order to achieve the same level of cardiac output. ... The potential for these contraindications and drug-drug interaction could lead to asystole and cardiac arrest. ...
Anasarca
The increase in salt and water retention caused by low cardiac output can also result in anasarca as a long term maladaptive ...
Muscle
An output of one watt continuously for eighty years yields a total work output of two and a half gigajoules.[18] ... Cardiac muscle fibers are interconnected by intercalated discs,[12] giving that tissue the appearance of a syncytium. ... Estimates of the power output of the human heart range from 1 to 5 watts. This is much less than the maximum power output of ... this amounts to about 20 percent efficiency at 250 watts of mechanical output. The mechanical energy output of a cyclic ...
Bag valve mask
Part 8: Adult Advanced Cardiac Life Support: 2010 American Heart Association Guidelines for Cardiopulmonary Resuscitation and ... one of the key advantages is that a direct air-tight passageway is provided from the output of the manual resuscitator to the ... "Unrecognized and inadvertent hyperventilation may be contributing to the currently dismal survival rates from cardiac arrest."[ ... lungs in simulated cardiac arrest with all three devices." [19] ... Advanced cardiac life support (ACLS). *Advanced trauma life ...
Button cell
Silver cells may have a stable output voltage until it suddenly drops at end of life. This varies for individual types; one ... Artificial cardiac pacemaker. *Implantable cardioverter-defibrillator. ReferencesEdit. *^ a b BBC News:'Button battery' warning ...
Bat
Cardiac output is directly derived from heart rate and stroke volume of the blood;[69] an active microbat can reach a heart ... Carnivorous and vampire bats consume large amounts of protein and can output concentrated urine; their kidneys have a thin ...
敗血症 - 维基百科,自由的百科全书
Cardiac output)以及血氧飽和(英语:Oxygen_saturation)也是應密切注意的數據,視情況需要採取必要處置以
Etilefrine
Intravenous infusion of this compound increases cardiac output, stroke volume, venous return and blood pressure in man and ... Marked falls in pulse rate, cardiac output, stroke volume and peripheral bloodflow, accompanied by rises in mean arterial ... Intravenous etilefrine increases the pulse rate, cardiac output, stroke volume, central venous pressure and mean arterial ... Etilefrine is a cardiac stimulant used as an antihypotensive. It is a sympathomimetic amine of the 3-hydroxy-phenylethanolamine ...
Atrial fibrillation
The rapid uncoordinated heart rate may result in reduced output of blood pumped by the heart (cardiac output), resulting in ... Due to inadequate cardiac output, individuals with AF may also complain of light-headedness,[23] may feel like they are about ... resulting in a severe reduction of cardiac output. This dangerous situation is prevented by the AV node since its limited ... involved in the regulation of cardiac conduction, modulation of ion channels and in cardiac development. Have been also ...
Hepatorenal syndrome
... but that the measured femoral and kidney fractions of cardiac output are respectively increased and reduced, suggesting that ... Hecker and Sherlock specifically identified that individuals with HRS had low urinary output, very low sodium in the urine, and ...
કૃત્રિમ પેસમેકર - વિકિપીડિયા
The electrodes are placed in contact with the outer wall of the ventricle (epicardium) to maintain satisfactory cardiac output ... Halperin, Daniel (2008). Pacemakers and Implantable Cardiac Defibrillators: Software Radio Attacks and Zero-Power Defenses (PDF ... Cleland J, Daubert J, Erdmann E, Freemantle N, Gras D, Kappenberger L, Tavazzi L (2005). "The effect of cardiac ... "Cardiac-resynchronization therapy with or without an implantable defibrillator in advanced chronic heart failure". N Engl J Med ...
Calcium channel blocker
Since blood pressure is in intimate feedback with cardiac output and peripheral resistance, with relatively low blood pressure ... He named this herbal drug "Zarnab" and used it as a cardiac remedy. This was the first known use of a calcium channel blocker ... By having both cardiac depressant and vasodilator actions, benzothiazepines are able to reduce arterial pressure without ... By acting on cardiac muscles (myocardium), they reduce the force of contraction of the heart. ...
Near-infrared spectroscopy
Indeed, NIRS is able to measure venous oxygen saturation (SVO2), which is determined by the cardiac output, as well as other ... examining the NIRS provides critical care physicians with an estimate of the cardiac output. NIRS is favoured by patients, ... "Peripheral Near-Infrared Spectroscopy: Methodologic Aspects and a Systematic Review in Post-Cardiac Surgical Patients". Journal ... NIRS is starting to be used in pediatric critical care, to help manage patients following cardiac surgery. ...
Secondary hypertension
... the normal physiological response to low blood pressure in the renal arteries is to increase cardiac output (CO) to maintain ... and norepinephrine which increase blood output from the heart and constrict arteries. People with neurogenic hypertension ... which results in peripheral vasoconstriction and cardiac stimulation. This diagnosis is confirmed by demonstrating increased ...
Cardiac Output Medical Definition | Merriam-Webster Medical Dictionary
Medical definition of cardiac output: the volume of blood ejected from the left side of the heart in one minute -called also ... Resources for cardiac output. Time Traveler: Explore other words from the year cardiac output first appeared Time Traveler! ... Comments on cardiac output. What made you want to look up cardiac output? Please tell us where you read or heard it (including ... Post the Definition of cardiac output to Facebook Share the Definition of cardiac output on Twitter ...
high cardiac output - Heart Disease - MedHelp
... recently had a stress echo which found that with exercise my heart did not squeeze properly which looked like balanced cardiac ... I have strong family hx so I had a cath done which was normal with clean arteries,normal pressures,ef 55% but my cardiac output ... Hi cardiac output could be caused by vitamin deficiencies, thyroid problems, multiple myeloma, pagets disease, arterio-venous ... recently had a stress echo which found that with exercise my heart did not squeeze properly which looked like balanced cardiac ...
Cardiac Output
... , Cardiac Index, Stroke Volume, Stroke Index, Clinical Assessment of Cardiac Output, Cardiac Function. ... Cardiac Output, Cardiac Outputs, Output, Cardiac, Outputs, Cardiac, heart output, cardiac output, Cardiac output, CO - Cardiac ... Cardiac Output. Aka: Cardiac Output, Cardiac Index, Stroke Volume, Stroke Index, Clinical Assessment of Cardiac Output, Cardiac ... cardiac functions, Cardiac function, Cardiac function (observable entity), Cardiac function, NOS, Cardiac function (function). ...
Focus on Cardiac Output Course | Medtronic
Learn about the causes of cardiac output (CO), the physiology of unbalanced CO, and strategies to optimize CO in ... This course examines cardiac output (CO), a leading measure of hemodynamic stability. The course begins with a close look at ... the determinants of cardiac output, including a review of terms that were introduced in the previous course, Basics of ...
Microbubble-ultrasound method improves cardiac output after heart attack
The results show that the mice, following myocardial infarction, have improved cardiac output as a result of this method, as ... The results show that the mice, following myocardial infarction, have improved cardiac output as a result of this method, as ... Microbubble-ultrasound method improves cardiac output after heart attack. *Download PDF Copy ... Tags: Anesthesiology, Cardiac Surgery, Cardiology, Diagnostic, Frequency, Gene, Gene Therapy, Heart, Heart Attack, Hormone, ...
Noninvasive cardiac output monitoring (NICOM): a clinical validation | SpringerLink
... based on chest bio-reactance compared with cardiac output measured... ... Objective To evaluate the clinical utility of a new device for continuous noninvasive cardiac output monitoring (NICOM) ... A total of 65,888 pairs of cardiac output measurements were collected. Mean reference values for cardiac output ranged from ... Chronic Obstructive Pulmonary Disease Cardiac Output Tricuspid Regurgitation Cardiac Output Measurement High Peep ...
When would cardiac output be the greatest? | Reference.com
... cardiac output is greatest during intense exercise and when a person is approximately in his 20s. The more intense the exercise ... Cardiac output is thought of by doctors as a combination of heart rate and stroke volume. Stroke volume is increased when the ... According to WebMD, cardiac output is greatest during intense exercise and when a person is approximately in his 20s. The more ... Therefore, the amount of blood that flows out of the heart in one minute, cardiac output, is great in both cases. ...
Changes in Cardiac Output with Age | Circulation
Changes in Cardiac Output with Age. MARTIN BRANDFONBRENER, MILTON LANDOWNE, NATHAN W. SHOCK ... carefully standardized application of dye dilution technic to the measurement of cardiac output are reported. A substantially ... reduced output was a consistent finding in older subjects. Factors responsible for this are analyzed in this article, and ...
Minimally Invasive Cardiac Output Monitoring Device - Study Results - ClinicalTrials.gov
Minimally Invasive Cardiac Output Monitoring Device. The safety and scientific validity of this study is the responsibility of ... The primary outcome of this work is to establish a dataset that would enable the calculation of a predicted cardiac output ... some patients did not have PA catheters placed and subsequently data was not obtained on cardiac output. ... Establishment of a Dataset to Create an Algorithm to Measure Cardiac Output ...
noninvasive cardiac output sensor noninvasively records the parameters associated with Cardiac Output measurements
Noninvasive Cardiac Output Sensor. BIOPACSs noninvasive cardiac output sensor noninvasively records the parameters associated ... Cardiac Output. Differential Pressure. Electrodermal. Feedback & Markers. Force. General. Goniometers. Microphone. Output. ... Cardiac Output. Differential Pressure. Electrodermal. Feedback & Markers. Force. General. Goniometers. Microphone. Output. ... Output. Oxygen Saturation. Transducer Connector Interface. Tri-axial Accelerometers. Breadboard. Cardiac Output. Electrodermal ...
Fick Cardiac Output
... Equations. The program FICK will calculate:. * CO: Cardiac Output (L/min). * SV: Stroke ... output. PRINT();. PRINT("Cardiac Output (l/min)");. PRINT(co);. PRINT("Stroke Volume (ml)");. PRINT(sv);. PRINT("Cardiac Index ... Fick Cardiac Output. // HP 65, 1972. // EWS 2017-04-10. // inputs. LOCAL ca,cv,vo,hr,h,w;. INPUT({ca,cv,vo,hr,h,w},. "Fick ... RE: Fick Cardiac Output (04-11-2017 04:22 AM)Eddie W. Shore Wrote: STPD: Standard Temperature Pressure Density. Ha! Thats what ...
Changes in Cardiac Output During Exercise | Livestrong.com
Cardiac output during exercise increases the amount of blood cycling through the heart from 6L/min to 25L. ... Therefore, your heart can maintain a high cardiac output with less effort. Most improvement to cardiac output is contributed to ... Heart health and exercise performance are regulated by your cardiac output ability. Understanding cardiac output during ... cardiac output is the amount of blood flowing out of your heart per minute. Cardiac output is calculated by multiplying heart ...
Noninvasive Cardiac Output Measurement: Troubled Technologie... : Anesthesia & Analgesia
Factors That Will Increase Cardiac Output | Livestrong.com
Cardiac output is the amount of blood pumped out of one side of the heart in a minute. The average for a normal adult is ... decreasing resistance to blood flow and thus increasing cardiac output. Increased cardiac output is also an early response to ... can block these negative hormonal effects and help support cardiac output. Other drugs can directly increase cardiac output, ... Cardiac output is the amount of blood pumped out of one side of the heart in a minute. The average for a normal adult is ...
Haemoglobin concentration and linear cardiac output, peripheral resistance, and oxygen transport. | The BMJ
Linear cardiac output was measured as minute distance by Doppler ultrasound in 40 patients with haemopoietic disorders who had ... Haemoglobin concentration and linear cardiac output, peripheral resistance, and oxygen transport. Br Med J (Clin Res Ed) 1986; ... Haemoglobin concentration and linear cardiac output, peripheral resistance, and oxygen transport.. Br Med J (Clin Res Ed) 1986 ... of peripheral resistance in response to oxygen availability overrides the influence of blood viscosity on cardiac output and ...
Patent US6227196 - Apparatus and method for non-invasively measuring cardiac output - Google Patents
The method of the invention includes estimating the cardiac output or pulmonary capillary blood flow of a patient based on ... A computer program for calculating the cardiac output or pulmonary capillary blood flow of a patient is also disclosed. ... Apparatus and methods for non-invasively determining the cardiac output or pulmonary capillary blood flow of a patient using ... Methods of Determining Cardiac Output or Pulmonary Capillary Blood Flow. The determination of cardiac output or pulmonary ...
JCI -
BALLISTOCARDIOGRAPHIC STUDY OF CHANGES IN CARDIAC OUTPUT DUE TO RESPIRATION
Minimally Invasive Cardiac Output Monitoring Device - Full Text View - ClinicalTrials.gov
Establishment of a Dataset to Create an Algorithm to Measure Cardiac Output [ Time Frame: 8 hours post cardiac surgery ]. The ... Minimally Invasive Cardiac Output Monitoring Device. The safety and scientific validity of this study is the responsibility of ... The specific objective is to establish an auto-calibration algorithm that conveniently yields cardiac output (CO) in units of ... Development of a Minimally Invasive Cardiac Output Monitoring Device for Critically Ill Patients. ...
1.5 Cardiac Output - Week 1: Pulse/Heart Rate | Coursera
Taurine tunes cuttlefish cardiac output | Journal of Experimental Biology
Taurine tunes cuttlefish cardiac output Message Subject (Your Name) has sent you a message from Journal of Experimental Biology ... the authors applied taurine to it and the cardiac output halved - as they had expected, knowing that the amino acid decreases ... allowing them to continuously monitor cardiac output (the amount of blood pumped per minute). Having confirmed that the ... Here, taurine impaired cardiac muscle relaxation, at least when the muscle was electrically stimulated to contract at high ...
Methods in pharmacology: measurement of cardiac output.
The holy grail for the measurement of cardiac output would be a method that is accurate, precise, operato ... Many methods of cardiac output measurement have been developed, but the number of methods useful for human pharmacological ... Cardiac Output / physiology*. Heart Function Tests / methods*. Humans. Indicator Dilution Techniques. Models, Theoretical. ... Many methods of cardiac output measurement have been developed, but the number of methods useful for human pharmacological ...
Patent US4004576 - Direct indicator device for determining the cardiac output flow rate ... - Google Patents
A gate circuit has one input connected with the output of the multiplexer, another input connected with the output of the clock ... the output of the gate circuit being connected with the input of a counter. The output of the counter is connected with the ... the computer having inputs connected respectively with the output of the intermediate storage, the output of the clock ... The gate circuit has an output at which there appears the clock rate of the clock generator as a function of time on the one ...
Global Low Cardiac Output Syndrome Clinical Trials Review, H2, 2016 - Knowledge Hub
The Report Low Cardiac Output Syndrome Global Clinical Trials Review, H2, 2016 provides information on pricing, market analysis ... medical sciencemarket research reportsictequipmentchemicalsoutputlow cardiacsyndromelow cardiac outputlow cardiac output ... Low Cardiac Output Syndrome Global Clinical Trials Review, H2, 2016" provides an overview of Low Cardiac Output Syndrome ... Global Low Cardiac Output Syndrome Clinical Trials Review, H2, 2016. Press Release • Jan 05, 2017 06:20 EST ...
Ultrasound offers precise, minimally invasive way to measure cardiac output in children
... minimally invasive way to measure cardiac output or heart function in children undergoing surgery does not exist. ... Cardiac output, the volume of blood pumped by the heart per minute, is a crucial component of vital signs monitored in surgical ... Ultrasound offers precise, minimally invasive way to measure cardiac output in children. *Download PDF Copy ... Most devices used to monitor cardiac output are adapted from adult patients with limited use in children, due to differences in ...
Dye Dilution Curves and Cardiac Output in Newborn Infants | Circulation
Effect of hemodialysis on blood volume distribution and cardiac output. | Hypertension
Effect of hemodialysis on blood volume distribution and cardiac output.. M Chaignon, W T Chen, R C Tarazi, E L Bravo, S ... Effect of hemodialysis on blood volume distribution and cardiac output.. M Chaignon, W T Chen, R C Tarazi, E L Bravo and S ... Effect of hemodialysis on blood volume distribution and cardiac output.. M Chaignon, W T Chen, R C Tarazi, E L Bravo and S ... Effects of hemodialysis on extracellular fluid volume distribution, left ventricular volumes, and cardiac output were ...
Vasodepressor neurons in medulla alter cardiac contractility and cardiac output. | Hypertension
Vasodepressor neurons in medulla alter cardiac contractility and cardiac output.. G Drolet, J Chalmers, W Blessing ... Cardiac output was unaffected. Prolonged inhibition of the sympathoinhibitory neurons with medullary injection of muscimol ... There was a progressive fall in cardiac output. These changes were accompanied by an increase in plasma neuropeptide Y and ... cardiac output, and plasma catecholamines and neuropeptide Y. Brief excitation of the sympathoinhibitory neurons with medullary ...
StateMaster - Encyclopedia: Cardiac output
Encyclopedia , Cardiac output. Cardiac output (CO) is the volume of blood being pumped by the heart, in particular by a ... Physiology & Psychology: Performance Benchmarks -- Cardiac Output (574 words). Cardiac output, - is the total volume of blood ... However, the cardiac output of Olympic medal winners in cross country skiing increased 8 times above resting cardiac output to ... Normal Output Cardiac output is equal to the stroke volume (SV) multiplied by the heart rate (HR). SV is the volume pumped per ...
Patente US20040044373 - Method and apparatus for electrically forcing cardiac output in an ... - Google Patentes
Forcing fields are applied to the heart to give cardiac output on an emergency basis until the arrhythmia ceases or other ... The method and apparatus maintain some cardiac output and not necessarily defibrillation. ... An electrical method and apparatus for stimulating cardiac cells causing contraction to force hemodynamic output during ... The method is referred to as Electrical Cardiac Output Forcing and the apparatus is the Electrical Cardiac Output Forcer (ECOF ...
Cardiac Output Monitor Using Fuzzy Logic Blood Pressure Analysis | Southwest Research Institute
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Measurement of cardiac16
- Measurement of cardiac output, as first described by the German physiologist Adolf E. Fick in 1870, makes possible an evaluation of respiratory exchange, i.e., the delivery of oxygen to the tissues. (britannica.com)
- In the first of two papers, the details and results of a systematic, carefully standardized application of dye dilution technic to the measurement of cardiac output are reported. (ahajournals.org)
- Direct measurement of cardiac output requires invasive measurements in a clinical setting. (livestrong.com)
- Methods in pharmacology: measurement of cardiac output. (biomedsearch.com)
- The 'holy grail' for the measurement of cardiac output would be a method that is accurate, precise, operator independent, fast responding, non-invasive, continuous, easy to use, cheap and safe. (biomedsearch.com)
- The impact of pulmonary disease on noninvasive measurement of cardiac output by the inert gas rebreathing method. (nih.gov)
- Zoremba N, Bickenbach J, Krauss B, Rossaint R, Kuhlen R, Schalte G. Comparison of electrical velocimetry and thermodilution techniques for the measurement of cardiac output. (springer.com)
- Ganz W, Donoso R, Marcus HS, et al (1971) A new technique for measurement of cardiac output by thermodilution in man. (springer.com)
- Capek JM, Roy RJ (1988) Nonivasive measurement of cardiac output using partial CO2 rebreathing. (springer.com)
- Snyder JV, Powner DJ (1982) Effects of mechanical ventilation on the measurement of cardiac output by thermodilution. (springer.com)
- Measurement of cardiac output makes possible an evaluation of respiratory exchange, i.e., the delivery of oxygen to the tissues. (ebme.co.uk)
- No. 10/153,387, filed May 21, 2002, entitled "Measurement of Cardiac Output and Blood Volume by Non-Invasive Detection of Indicator Dilution. (google.com)
- No. 10/487,480, filed May 17, 2004, entitled "Measurement of Cardiac Output and Blood Volume by Non-Invasive Detection of Indicator Dilution," attorney docket 64693-100. (google.com)
- No. 60/292,580, filed May 21, 2001, entitled "Method and Apparatus for Measurement of Cardiac Output by Transcutaneous Detection of Fluorescent Indicator. (google.com)
- The benefit of routine measurement of cardiac output after cardiac surgery is still discussed. (biomedcentral.com)
- The present study was done to know the predictive value of measurement of cardiac output in early pregnancy for knowing the occurrence of hypertensive disorders. (ibimapublishing.com)
Measurements23
- Cardiac output measurements obtained from NICOM and thermodilution were simultaneously recorded minute by minute and compared in 110 patients. (springer.com)
- A total of 65,888 pairs of cardiac output measurements were collected. (springer.com)
- The device promises the accuracy of measurements of cardiac output equal or better to traditional Swan-Ganz catheter. (medgadget.com)
- After surgery, five consecutive repeated cardiac measurements were performed using both methods simultaneously, for a total of 215 cardiac output measurements. (news-medical.net)
- The precision of cardiac output measurements with PA-TD and TP-TD was very similar. (wiley.com)
- Post-operatively, cardiac output measurements with the PA-TD and pulse contour methods did not agree, but the pulse contour method reliably tracked pacing-induced changes in cardiac output. (wiley.com)
- As such, PAC procedures are still considered the gold standard for calculating cardiac output as well as performing other essential measurements related to drug administration, particularly in high risk surgical theaters. (researchandmarkets.com)
- Isotonic saline, which is the indicator, is injected to obtain COstatus cardiac output measurements. (clinicaltrials.gov)
- Comparison of FloTrac cardiac output monitoring system in patients undergoing coronary artery bypass grafting with pulmonary artery cardiac output measurements. (springer.com)
- Cardiac output measurements based on the pulse wave transit time and thoracic impedance exhibit limited agreement with thermodilution method during orthotopic liver transplantation. (springer.com)
- and generating a histogram of cardiac output measurements as a function of activity level. (patentgenius.com)
- 6. The method of claim 1, further comprising acquiring hemoglobin-related information via a third implantable sensor, wherein the derivation of cardiac output measurements is further based on the hemoglobin-related information. (patentgenius.com)
- and deriving cardiac output measurements based on the venous oxygen saturation information, thehemoglobin-related information, and the estimates of oxygen consumption. (patentgenius.com)
- 10. The method of claim 7, further comprising determining a pacing rate during atrial fibrillation based on the cardiac output measurements. (patentgenius.com)
- 11. The method of claim 7, further comprising not administering a shock during ventricular tachyarrhythmia if the cardiac output measurements indicate that cardiac output is substantially stable. (patentgenius.com)
- and adjusting at least one pacing parameter based on the cardiac output measurements to optimize cardiac output. (patentgenius.com)
- Davis CC, Jones NL, Sealy BJ (1978) Measurements of cardiac output in seriously ill patients using a CO2 rebreathing method. (springer.com)
- A pacemaker provides multi-chamber pacing with a pacing interval that can be programmed and adapted in response to cardiac output measurements for a given patient. (patentgenius.com)
- First measurements of cardiac output during surgery (from Heilbrunn and Allbritten 5 with permission). (asahq.org)
- Measurements of pulsatile cardiac output were made simultaneously with trout ventilation, and revealed ventilatory interactions with blood flow that varied depending on environmental oxygen condition. (oregonstate.edu)
- BACKGROUND: We compared cardiac output (CO) measurements by the non-invasive electrical velocimetry (Aesculon) monitor with the pulmonary artery catheter (PAC) thermodilution method in children. (uzh.ch)
- Measurements of stroke volume and cardiac output (CO) are important parameters in the management of pregnant women who have or develop serious cardiorespiratory or renal complications, Measurement by thermodilution utilising a pulmonary artery flotation catheter has numerous limitations. (journals.co.za)
- Schraverus P, Kuijpers MM, Coumou J, Boly CA, Boer C, van Kralingen S. Level of agreement between cardiac output measurements using Nexfin( ® ) and thermodilution in morbidly obese patients undergoing laparoscopic surgery. (springermedizin.de)
Increase in cardiac output8
- This is the 'fight or flight' response, part of which includes an increase in cardiac output to provide oxygen and nutrients necessary as fuel for sudden activity. (livestrong.com)
- When low blood pressure is sensed by receptors in the blood vessels, the nervous system releases hormones -- principally adrenaline and related compounds -- that increase the force of the heart's contractions and tighten the blood vessels, producing an increase in cardiac output and blood pressure. (livestrong.com)
- Thus, an increase in heart rate results in an increase in cardiac output. (healthtap.com)
- In a complete animal or human model, there are various reflexes that work to maintain cardiac output in the face of increased afterload but they shouldn't cause an increase in cardiac output relative to the baseline. (healthtap.com)
- This technique involved a real fluid challenge, because the response was uncertain, and indeed only half the patients responded with an increase in cardiac output. (asahq.org)
- A 70% increase in butanol flux was noted with a 50% increase in cardiac output, but there was no increase in butanol flux with a 100% increase in ventilation volume. (oregonstate.edu)
- Overshoot of cardiac output was defined as a further increase in cardiac output at 1 min of recovery above the cardiac output at peak exercise. (onlinejacc.org)
- However, because of a continued increase in cardiac output at 1 min of recovery in patients with overshoot, there were no differences in cardiac index after the first minute of recovery. (onlinejacc.org)
Hemodynamic11
- This course examines cardiac output (CO), a leading measure of hemodynamic stability. (medtronic.com)
- An electrical method and apparatus for stimulating cardiac cells causing contraction to force hemodynamic output during fibrillation, hemodynamically compromising tachycardia, or asystole. (google.es)
- quantium Medical Cardiac Output (qCO) uses impedance cardiography in a simple, continuous, and non-invasive way to estimate the Cardiac output (CO) and other hemodynamic parameters such as the Stroke Volume (SV) and Cardiac index (CI). (wikipedia.org)
- In 2014, the results of the POEMAS Study (Peri Operative goal-directed thErapy in Major Abdominal Surgery) were published: "a perioperative hemodynamic protocol guided by a noninvasive cardiac output monitor was not associated with a decrease in the incidence of overall complications or length of stay in major abdominal surgery. (thefreedictionary.com)
- Hemodynamic monitoring is mandatory for perioperative management of cardiac surgery. (springer.com)
- VALHALLA, N.Y., Dec. 17, 2018 (GLOBE NEWSWIRE) -- Retia Medical, LLC, a medical device company focused on advancing the quality and clinical use of hemodynamic monitoring, today announced that its Argos Cardiac Output (CO) Monitor has received U.S. Food and Drug Administration 510k clearance and is now available for sale in the United States. (globenewswire.com)
- It is intended to be used as a hemodynamic monitor for cardiac output monitoring and its derived parameters on patients in the intensive care unit or the operating room. (globenewswire.com)
- Retia Medical designed the Argos Cardiac Output (CO) Monitor to provide members of the Critical Care team in the OR and ICU with a more accurate, intuitive and affordable hemodynamic monitor that supports confident, data-based patient care decision making. (globenewswire.com)
- Retia Medical aims to advance the use of cardiac output (CO) monitoring to improve patient care by providing members of the critical care team with a more accurate, easy-to-use, and affordable hemodynamic monitor that supports confident, data-based decisions. (globenewswire.com)
- (7) provide further data to support the disconnect between cardiac output and renal function in a HF population with careful cardiac and hemodynamic profiling. (onlinejacc.org)
- Therefore, this analysis is consistent with previous data, and together with the finding of a lack of success of treatment strategies focused at improvement of renal function through enhanced cardiac output, it is evident to conclude that a reduced CI is not a hemodynamic driver for renal dysfunction in patients hospitalized for HF who are not in shock. (onlinejacc.org)
Ejection fraction1
- The study population consisted of patients with advanced heart failure with a reduced ejection fraction (mean ejection fraction 23 ± 12%) with an average cardiac index (CI) of 2.3 ± 2.1 l/min/m 2 and a right atrial pressure of 14 ± 9 mm Hg. (onlinejacc.org)
Pulmonary artery c4
- To evaluate the clinical utility of a new device for continuous noninvasive cardiac output monitoring (NICOM) based on chest bio-reactance compared with cardiac output measured semi-continuously by thermodilution using a pulmonary artery catheter (PAC-CCO). (springer.com)
- Su NY, Huang CJ, Tsai P, Hsu YW, Hung YC, Cheng CR (2002) Cardiac output measurement during cardiac surgery: esophageal Doppler versus pulmonary artery catheter. (springer.com)
- The current gold standard cardiac monitor is the Pulmonary Artery Catheter (PAC), which involves insertion of a catheter into a patient's neck or groin. (medicalxpress.com)
- They concluded a post hoc subanalysis from the randomized and registry portions of the ESCAPE (Evaluation Study of Congestive Heart Failure and Pulmonary Artery Catheter Effectiveness) trial to specifically evaluate the association between cardiac output and renal function (7) . (onlinejacc.org)
Monitor during2
- Barin E, Haryadi D, Schookin S, Westenskow D, Zubenko V, Beliaev K, Morozov A (2000) Evaluation of a thoracic bioimpedance cardiac output monitor during cardiac catheterization. (springer.com)
- Evaluation of a thoracic bioimpedance cardiac output monitor during cardiac catheterization. (semanticscholar.org)
Contractility6
- Having confirmed that the cuttlefish heart was functioning normally, the authors applied taurine to it and the cardiac output halved - as they had expected, knowing that the amino acid decreases contractility when calcium levels are high in mammals. (biologists.org)
- Vasodepressor neurons in medulla alter cardiac contractility and cardiac output. (ahajournals.org)
- We injected neuroexcitatory and neuroinhibitory agents into the depressor region of the caudal ventrolateral medulla of anesthetized rabbits and determined the effect on arterial pressure, myocardial contractility, cardiac output, and plasma catecholamines and neuropeptide Y. Brief excitation of the sympathoinhibitory neurons with medullary injection of L-glutamate reduced arterial pressure, peripheral vascular resistance, and myocardial contractility. (ahajournals.org)
- Whilst 'frequency modulation' of cardiac output dominates amongst vertebrates, changes in heart rate have ensuing effects on cardiac filling and contractility. (biologists.org)
- A higher contractility allows the heart to pump out more of its blood during systole, due to the increased ejection force of the cardiac muscles. (ebme.co.uk)
- The learning activity represented how cardiac output is affected by heart rate, stroke volume, contractility, and preload. (qsen.org)
Measuring Cardiac Output2
- The ultrasound sensors showed a statistically similar precision for measuring cardiac output when compared to the results obtained using the periaortic flow probe. (news-medical.net)
- The collaborative paper by researchers at The University of Queensland School of Medicine, the Florey Neuroscience Institute and the University of Melbourne compared the current accepted method of measuring cardiac output with a non-invasive accurate ultrasound monitor called USCOM. (medicalxpress.com)
Changes in cardiac7
- Changes in cardiac output during exercise increase blood cycling rate up to 25 L per minute in active individuals and 35 L per minute in elite athletes, says the American Council on Exercise . (livestrong.com)
- The aims of this study were to determine the agreement between pulmonary artery thermodilution (PA-TD), transpulmonary thermodilution (TP-TD) and the pulse contour method, and to test the ability of the pulse contour method to track changes in cardiac output. (wiley.com)
- The changes in cardiac output with atrial pacing were in the same direction and of the same magnitude in 15 of the 16 patients. (wiley.com)
- They now report that [changes in pulse pressure variation] during the fluid challenge reflected better the changes in cardiac output, with a smaller gray zone. (asahq.org)
- 4 evaluate a new technique to assess changes in cardiac output during fluid administration in the surgical patient. (asahq.org)
- It is widely appreciated that changes in arterial pressure do not reliably reflect changes in cardiac output, because the body employsmechanisms to preserve tissue perfusion pressure when stroke volume falls. (asahq.org)
- As expected, although there were some changes in arterial pressure, these did not reliably reflect the changes in cardiac output. (asahq.org)
Oxygen24
- Maintaining and regulating cardiac output, which is usually proportional to the tissues' need for oxygen and other nutrients, is one of the circulatory system's most intricate functions. (britannica.com)
- Cardiac output normally increases in response to increased demand for oxygen by muscles during exercise, in reaction to danger, in response to certain classes of drugs and in some altered health conditions. (livestrong.com)
- In pregnancy, the mother's heart increases its output to help supply the fetus and placenta with adequate oxygen and nutrients. (livestrong.com)
- Haemoglobin concentration and linear cardiac output, peripheral resistance, and oxygen transport. (bmj.com)
- These results suggest that adjustment of peripheral resistance in response to oxygen availability overrides the influence of blood viscosity on cardiac output and that the optimum packed cell volume for oxygen transport is the highest that can be achieved. (bmj.com)
- Daniel M K , Bennett B , Dawson A A , Rawles J M . Haemoglobin concentration and linear cardiac output, peripheral resistance, and oxygen transport. (bmj.com)
- Oxygen delivery (DO2 mL/min) is the resultant of blood flow (cardiac output CO) times the blood oxygen content (CaO2). (wikipedia.org)
- Mathematically this is calculated as follows: Oxygen delivery = cardiac output × arterial oxygen content DO2 = CO × CaO2. (wikipedia.org)
- With a resting cardiac output of 5-litre min−1 a 'normal' oxygen delivery is around 997.5 ml min. (wikipedia.org)
- Factors that could lead to changes in a patient's functional capacities because of decreased cardiac output might include physical exercise of a type or intensity that the patient cannot tolerate because of diminished oxygen supply, ingestion of large meals that place an added workload on the heart, obesity, retention of fluid (edema), hypovolemia or hypervolemia, emotional stress, and smoking. (thefreedictionary.com)
- Could low oxygen (decreased lung expansion) decreases cardiac output? (healthtap.com)
- An implantable medical device calculates cardiac output on a repeated basis based on acquired cardiac information that relates to one or more parameters of the Fick equation, including venous oxygen saturation, arterial oxygen saturation, estimated oxygen consumption and hemoglobin information. (patentgenius.com)
- During exercise, your body may need three or four times your normal cardiac output, because your muscles need more oxygen when you exert yourself. (lancastergeneralhealth.org)
- Sufficient cardiac output helps keep blood pressure at the levels needed to supply oxygen-rich blood to your brain and other vital organs. (lancastergeneralhealth.org)
- The equilibration method, using a bag containing a high concentration of carbon dioxide in oxygen, has been shown to accurately measure oxygenated pvCO 2 and application of this method has led to the development of the non-invasive determination of cardiac output (CO) by the CO 2 rebreathing. (springer.com)
- Cardiac output, the product of heart rate and stroke volume, delivers oxygen to respiring cells and must be adjusted as metabolic requirements change. (biologists.org)
- The oxygen saturation sensors provide a differential measurement that can be used to calculate cardiac output in accordance with the Fick method. (patentgenius.com)
- and an activity level sensor that senses an activity level of the patient, wherein the memory stores oxygenconsumption data for different activity levels of the patient, and the processor computes the cardiac output based on oxygen consumption data in the memory that corresponds to the sensed activity level. (patentgenius.com)
- Cardiac Output is usually measured using the Fick Principle (German physiologist Adolf E. Fick), which relates the cardiac output of the patient to the oxygen consumption, or by thermodilution, in which cold saline is injected into the right atrium and changes in the temperature in the pulmonary artery are recorded. (ebme.co.uk)
- A. Fick a German physiologist in 1870 described a simple method of calculating cardiac output from measurement of oxygen consumption (or carbon dioxide production) and the difference between oxygen (or carbon dioxide) contents of blood entering and leaving the heart. (expertsmind.com)
- Kinetics of oxygen uptake (VO 2 ) and carbon dioxide output (VCO 2 ) during recovery were characterized by T1/2, the time to reach 50% of the peak values. (onlinejacc.org)
- In patients with chronic heart failure (CHF), exercise capacity is limited by inadequate oxygen transport to working skeletal muscle due to reduced exercise cardiac output (1-3) . (onlinejacc.org)
- However, the kinetics of recovery cardiac output and their relation to oxygen uptake kinetics during recovery have not been evaluated in CHF. (onlinejacc.org)
- We hypothesized that the time course of cardiac output during recovery is also slower in patients with severe CHF, and delayed recovery of oxygen uptake kinetics reflects the prolonged recovery of cardiac output after maximal exercise in severe CHF. (onlinejacc.org)
Liters per minute2
- The specific objective is to establish an auto-calibration algorithm that conveniently yields cardiac output (CO) in units of liters-per-minute. (clinicaltrials.gov)
- Cardiac output is the amount of blood that is pumped by the heart per unit time, measured in liters per minute (l/min). (omicsonline.org)
Surgery17
- Along with the Department of Cardiology, the Departments of Cardiac Surgery and Anesthesiology and the Institute of Physiology took part in the investigations. (news-medical.net)
- Consecutive adult patients immediately after cardiac surgery. (springer.com)
- Sensors will be placed on the patient and connected to an amplifier that produces a waveform for 8 hours post cardiac surgery. (clinicaltrials.gov)
- patients had undergone routine cardiac surgery. (clinicaltrials.gov)
- All adult patients admitted to the University of Michigan ICU following cardiac surgery with both a pulmonary and radial artery catheter. (clinicaltrials.gov)
- Currently, a practical, precise, minimally invasive way to measure cardiac output or heart function in children undergoing surgery does not exist. (news-medical.net)
- Forty-three children between the ages of one and 44 months scheduled for corrective cardiac surgery were studied. (news-medical.net)
- Cardiac output was determined twice before cardiac surgery with both PA-TD and TP-TD. (wiley.com)
- Objectives To investigate the influence of cardiac output reduction on volatile agent concentration required for maintenance of the targeted anaesthesia depth during cardiac surgery. (bmj.com)
- Do We Need to Monitor Cardiac Output during Major Surgery? (asahq.org)
- Victor Bautista-Hernandez and Melvin C. Almodovar, "Editorial (Thematic Issue: Pharmacologic Strategies with Afterload Reduction in Low Cardiac Output Syndrome After Pediatric Cardiac Surgery)", Current Vascular Pharmacology (2016) 14: 3. (eurekaselect.com)
- Clinicians also do not really know what value of cardiac output is necessary after cardiac surgery. (biomedcentral.com)
- The aim of the present study was to verify whether the commonly accepted lower value of cardiac index of 2.2 l/min/m 2 [ 4 ] at arrival in the ICU was a good predictor of complications after cardiac surgery. (biomedcentral.com)
- Preoperative and intraoperative predictors of cardiac adverse events after general, vascular, and urological surgery. (springermedizin.de)
- Broch O, Renner J, Gruenewald M, Meybohm P, Schottler J, Caliebe A, Steinfath M, Malbrain M, Bein B. A comparison of the Nexfin and transcardiopulmonary thermodilution to estimate cardiac output during coronary artery surgery. (springermedizin.de)
- In view of these favorable effects, levosimendan has been tested in patients undergoing cardiac surgery for the prevention or treatment of low cardiac output syndrome. (readbyqxmd.com)
- Pediatric Cardiac Surgery, 4th ed. (northwestern.edu)
Afterload5
- The course begins with a close look at the determinants of cardiac output, including a review of terms that were introduced in the previous course, Basics of Hemodynamics, such as preload, and afterload. (medtronic.com)
- In a physiologic model, increased blood pressure or "hypertension" or increased "afterload" tends to decrease cardiac output . (healthtap.com)
- Similarly, a decrease in the afterload (arterial blood pressure) can also increase cardiac output, by reducing the input resistance the heart must overcome in order to pump blood into the vasculature. (ebme.co.uk)
- This interactive hands-on learning activity was developed as part of a senior level adult-health course to provide understanding on advanced cardiac concepts such pre-load and afterload. (qsen.org)
- Future use may include a wide mouth bucket and a narrow mouth bucket to demonstrate the effect of afterload (resistance) on cardiac output. (qsen.org)
Cardiovascular4
- Assessment of the cardiac output is important in determining the work that the heart is actually performing with respect to the rest of the cardiovascular system. (ebme.co.uk)
- Cardiovascular Magnetic Resonance (CMR) enables non-invasive quantification of cardiac output (CO) and thereby cardiac index (CI, CO indexed to body surface area). (nih.gov)
- Intravascular indicators are stimulated, and emissions patterns detected for computation of cardiac output, cardiac index, blood volume and other indicators of cardiovascular health. (google.com)
- Pulse contour cardiac output derived from non-invasive arterial pressure in cardiovascular disease. (springermedizin.de)
Coronary3
- Estimated continuous cardiac output based on pulse wave transit time in off-pump coronary artery bypass grafting: a comparison with transpulmonary thermodilution. (springer.com)
- When, the control heart ranging between 140 and 190 per minute, atrial tachycardia of a rate only slightly higher than the control rate was induced, a very temporary initial decrease in arterial blood pressure, cardiac output and coronary blood flow occurred, then all three parameters essentially returned to control level. (ahajournals.org)
- With atrial tachycardia of a higher rate, blood pressure, cardiac output and coronary flow fell more markedly, then blood pressure and cardiac output rose to or toward control level, remaining below control level with higher rates of tachycardia, whereas the coronary flow rose to or above control level and only exceptionally remained below control level. (ahajournals.org)
Clinical9
- GlobalData's clinical trial report, Low Cardiac Output Syndrome Global Clinical Trials Review, H2, 2016" provides an overview of Low Cardiac Output Syndrome clinical trials scenario. (mynewsdesk.com)
- This report provides top line data relating to the clinical trials on Low Cardiac Output Syndrome. (mynewsdesk.com)
- There are a number of clinical methods to measure cardiac output, ranging from direct intracardiac catheterization to non-invasive measurement of the arterial pulse. (wikipedia.org)
- The low-cardiac-output state can be thought of as the final common pathway of a multitude of diseases that affect the heart - it is a clinical syndrome. (psychiatryadvisor.com)
- Heart failure is a clinical syndrome characterized by a decrease in cardiac output with or without an increase in intracardiac pressure, which can be caused by structural or functional pathologies. (thefreedictionary.com)
- van Heerden PV, Baker S, Lim SI, et al (2000) Clinical evaluation of the noninvasive cardiac output (NICO) monitor in the intensive care unit. (springer.com)
- This study aims to investigate the effect of standard versus advanced cardiac monitoring with optimization of CO on the clinical outcome in patients with large ischemic stroke. (frontiersin.org)
- Observations at the time of acute severe hypotensive crises that show rough correlation of MAP and cardiac index should not be extrapolated throughout the entire hypotensive period or to other less extreme clinical situations. (nih.gov)
- The activity correlated with the didactic content (the role of heart rate and stroke volume on cardiac output) to link the activity to specific cardiac disease conditions, with a discussion of related clinical symptoms and anticipated treatment. (qsen.org)
Arterial pressure1
- The relationship between mean arterial pressure, cardiac output and total peripheral resistance (TPR) gets affected by Vasodilation. (omicsonline.org)
Noninvasive Cardiac Output Measurement2
Physiology4
- Cardiac output , in human physiology, volume of blood expelled by either ventricle of the heart . (britannica.com)
- As reviewed in the September 2013 issue of 'Frontiers in Physiology,' drugs such as carvedilol (Coreg) can block these negative hormonal effects and help support cardiac output. (livestrong.com)
- Nevertheless, cephalopod hearts share common building blocks with those of vertebrate hearts, so by investigating the cardiac physiology of these molluscs, it may be possible to reveal the foundations of heart function in animals. (biologists.org)
- Cardiac output (CO), also known as heart output denoted by the symbols Q {\displaystyle Q} , or Q ˙ c {\displaystyle {\dot {Q}}_{c}} , is a term used in cardiac physiology that describes the volume of blood being pumped by the heart, by the left and right ventricle, per unit time. (wikipedia.org)
Continuous9
- Boldt J, Menges T, Wollbruck M, Hammermann H, Hempelmann G (1994) Is continuous cardiac output measurement using thermodilution reliable in the critically ill patient? (springer.com)
- Gratz I, Kraidin J, Jacobi AG, deCastro NG, Spagna P, Larijani GE (1992) Continuous noninvasive cardiac output as estimated from the pulse contour curve. (springer.com)
- Bernstein DP (1986) Continuous noninvasive real-time monitoring of stroke volume and cardiac output by thoracic electrical bioimpedance. (springer.com)
- In people with heart failure, however, the continuous production of these hormones begins to stiffen the heart and blood vessel muscles and can decrease cardiac output. (livestrong.com)
- Tests were conducted over time intervals that ranged from 6 to 24 hours of continuous monitoring for the obtained instantaneous cardiac output for each minute. (medgadget.com)
- Recently, the estimated continuous cardiac output (esCCO) system, which can monitor cardiac output (CO) non-invasively based on pulse wave transit time, has been developed. (springer.com)
- A method has been developed for the continuous automated monitoring of cardiac output in adult rainbow trout. (oregonstate.edu)
- Wagner JY, Grond J, Fortin J, Negulescu I, Schöfthaler M, Saugel B. Continuous noninvasive cardiac output determination using the CNAP system: evaluation of a cardiac output algorithm for the analysis of volume clamp method-derived pulse contour. (springermedizin.de)
- A technique of continuous cardiac output (CO) measurement without injection of foreign fluids is discussed in this report. (ntu.edu.sg)
Systemic5
- The team developed a method in which the systemic heart was perfused by tubes containing artificial cuttlefish 'blood', allowing them to continuously monitor cardiac output (the amount of blood pumped per minute). (biologists.org)
- When cardiac output (CO) falls short or systemic metabolic demand is increased, the patient is in jeopardy. (springer.com)
- In 17 ASA I and II patients undergoing elective craniotomies for supratentorial tumours, the following haemodynamic parameters were measured noninvasively: heart rate (HR), systolic blood pressure (SBP), diastolic blood pressure (DBP), stroke volume (SV), cardiac output (CO) and systemic vascular resistance (SVR). (ovid.com)
- Overshoot of cardiac output was caused by a rebound increase in stroke volume which was due to a reduction in systemic vascular resistance. (onlinejacc.org)
- Reducing lung liquid volume increases biventricular outputs and systemic arterial blood flows despite decreased cardiac filling pressures in fetal lambs. (edu.au)
High cardiac output1
- Therefore, your heart can maintain a high cardiac output with less effort. (livestrong.com)
Affect cardiac output4
- The factors affecting stroke volume and heart rate also affect cardiac output. (wikipedia.org)
- What systems affect cardiac output? (healthtap.com)
- All organ systems are related and can affect cardiac output . (healthtap.com)
- how could hypertension affect cardiac output? (healthtap.com)
Normal cardiac output3
- What is a normal cardiac output? (lancastergeneralhealth.org)
- A healthy heart with a normal cardiac output pumps about 5 to 6 liters of blood every minute when a person is resting. (lancastergeneralhealth.org)
- However heart rate increased due to sympathetic activity, and normal cardiac output is maintained. (cueflash.com)
Heart Rate and Stroke Volume7
- Cardiac output is thought of by doctors as a combination of heart rate and stroke volume. (reference.com)
- Heart rate and stroke volume dictate cardiac output. (livestrong.com)
- Cardiac output is known as the volume of blood is pumped by from the right or left ventricle of heart per minute and which is dependent on heart rate, and stroke volume. (bharatbook.com)
- The purpose of the activity was to engage the students and help them grasp the connection between cardiac output, heart rate, and stroke volume. (qsen.org)
- In other words, cardiac output can be calculated if we know the values of heart rate and stroke volume. (expertsmind.com)
- What is the mathematical relationship between cardiac output, heart rate, and stroke volume. (cueflash.com)
- This reduces heart rate and stroke volume from their high levels, bringing cardiac output back to normal. (cueflash.com)
20161
- 03.15.2016 Predictions During exercise HR will increase During exercise SV will increase During exercise CO will increase Materials and Methods Dependent Variable EDV, ESV, and cardiac cycle length Independent Variable level of physical activity (resting or exercise) Controlled Variables age, weight, height, health, gender 4. (coursehero.com)
Patients34
- Rocco M, Spadetta G, Morelli A, Dell'Utri D, Porzi P, Conti G, Pietropaoli P (2004) A comparative evaluation of thermodilution and partial CO 2 rebreathing techniques for cardiac output assessment in critically ill patients during assisted ventilation. (springer.com)
- some patients did not have PA catheters placed and subsequently data was not obtained on cardiac output. (clinicaltrials.gov)
- Linear cardiac output was measured as minute distance by Doppler ultrasound in 40 patients with haemopoietic disorders who had stable haemoglobin concentrations ranging from 30 to 200 g/l. (bmj.com)
- Adult patients with mechanical cardiac support including intra-aortic balloon pumps, LVAD, or ECMO, and persistent ventricular arrhythmias. (clinicaltrials.gov)
- In ICU, non-invasive Cardiac Output monitoring by the NICOM® provides haemodynamic information, which assists in diagnosis and therapy of heart patients by establishing the patient's baseline haemodynamic status for optimization of drug titration. (medgadget.com)
- The diverse patient population included unstable patients in general, cardiac, and post-surgical intensive care settings. (medgadget.com)
- Cardiac output, the volume of blood pumped by the heart per minute, is a crucial component of vital signs monitored in surgical patients. (news-medical.net)
- Most devices used to monitor cardiac output are adapted from adult patients with limited use in children, due to differences in size, technical limitations, and risk of complications. (news-medical.net)
- Despite the encouraging results from this study, there are still many challenges in developing the ideal cardiac output monitor for pediatric patients,' said Dr. Trieu. (news-medical.net)
- Effects of hemodialysis on extracellular fluid volume distribution, left ventricular volumes, and cardiac output were determined in patients with end-stage renal disease (n = 19). (ahajournals.org)
- There results suggest that, although intravascular volume was the major determinant of cardiac output in dialyzed patients, the postdialysis reduction in cardiac output might be related more to the relocation of blood volume than to the absolute degree of blood volume contraction. (ahajournals.org)
- Finally, in patients with heart rates below 60 beats/min or a cardiac index of less than 2.5 l/min/m 2 , atrial pacing was started and the haemodynamic consequences were monitored with the PA-TD and pulse contour methods. (wiley.com)
- Since we proposed that maintenance of the target level of anaesthesia (Entropy index not more then 40) in patients with reduced cardiac index may be accomplished with lower ETsev, further analysis included 65 sets of variables measured in patients with target Entropy index. (bmj.com)
- However, in some patients the dominant manifestations are of reduced cardiac output and tissue hypoperfusion with or without congestion. (psychiatryadvisor.com)
- Cardiac catheterisation was performed in 50 consecutive patients with PH. (ersjournals.com)
- We enrolled 50 consecutive patients referred to the cardiac catheterisation laboratory for a haemodynamic assessment of presumed or previously confirmed PH. (ersjournals.com)
- In a randomised study of 104 healthy patients undergoing caesarean delivery under spinal anaesthesia, at 5 minutes after local anaesthetic injection a noradrenaline infusion maintained maternal cardiac output and heart rate better than a phenylephrine infusion. (thefreedictionary.com)
- Cardiac output was decreased in 18 patients (25.7%), normal in 39 patients (55.7%) and increased in 13 patients (18.6%), whereas in 70 patients, 18 patients (25.7%) had decreased cardiac index, 26 patients (37.1%) had normal cardiac index and 26 patients (37.1%) had increased cardiac index. (thefreedictionary.com)
- A total of 96 patients were enrolled, including 48 consecutive patients with variant lung diseases (group A) and 48 pair-matched pulmonary healthy patients (group B). CO was measured with cardiac magnetic resonance imaging (CMR) and IGR. (nih.gov)
- Franciosa JA (1977) Evaluation of the CO2 rebreathing cardiac output method in seriously ill patients. (springer.com)
- Neviere R, Mathieu D, Riou Y, et al (1994) Carbon dioxide rebreathing method of cardiac output measurement during acute respiratory failure in patients with chronic obstructive pulmonary disease. (springer.com)
- Blanch L, Fernandez R, Benito S, et al (1988) Accuracy of an indirect carbon dioxide Fick method in determination of the cardiac output in critically ill mechanically ventilated patients. (springer.com)
- 500 patients), as well as across specific well-characterized subgroups in which reduced cardiac output was expected to play an important role (i.e., high right atrial pressure, more impaired renal function, or low systolic blood pressure). (onlinejacc.org)
- Potential Methods To Measure Cardiac Output in Patients With Shock. (slideserve.com)
- High flow in an AV access can produce life-threatening cardiac complications for ESRD patients. (transonic.com)
- For patients at risk based on such pre-existing conditions, the widespread consensus (evidence-based) is that patients with access flows of 2 L/min or higher should be tested and followed for these complications -- and have a flow-reduction procedure performed at the earliest signs of cardiac complications or extremity ischemia. (transonic.com)
- Therefore, it is critically important for the practitioner to be aware of the relationship between access flow and cardiac failure, since many of these high-flow patients will have morbidity and mortality. (transonic.com)
- DESIGN Prospective data collected from 47 patients undergoing routine cardiac catheterization. (semanticscholar.org)
- The aim of this study was to characterize the kinetics of cardiac output during recovery from maximal exercise in patients with chronic heart failure (CHF). (onlinejacc.org)
- Overshoot of cardiac output was recognized in 11 of 30 patients. (onlinejacc.org)
- Seventy-three consecutive patients with a value of cardiac index lower than or equal to 2.2 were included in a prospective observational study. (biomedcentral.com)
- Complicated patients had lower cardiac output and SVO 2 values 2 and 6 hours after the arrival in ICU. (biomedcentral.com)
- The non-invasive Nexfin cardiac output (CO) monitor shows a low level of agreement with the gold standard thermodilution method in morbidly obese patients. (springermedizin.de)
- In this study, we aimed to compare noninvasively the effects of right and left thoracotomies on cardiac output in the patients who would undergo thoracotomy. (scopemed.org)
Dysfunction9
- 7 days presenting without cardiac dysfunction and with a low cardiac output. (biomedsearch.com)
- The European Society of Cardiology (ESC) defines cardiogenic shock as "evidence of tissue hypoperfusion induced by cardiac dysfunction after correction of preload. (psychiatryadvisor.com)
- The underlying cause of the myocardial dysfunction may be primarily cardiac or extracardiac. (psychiatryadvisor.com)
- Broadly, cardiac dysfunction can result from any cardiac structural disorder or functional disorder that disrupts cardiac filling or emptying. (psychiatryadvisor.com)
- A patient with preoperative pulmonary hypertension and a large left to right intracardiac shunt underwent surgical correction of a complex cardiac anomaly and required extracorporeal life support for unexplained ventricular dysfunction following the procedure. (ovid.com)
- Intuitively, progressive renal dysfunction is often attributed to hypoperfusion of the kidney due to progressive impairment of cardiac output. (onlinejacc.org)
- PCC) Integrate understanding of the dimensions of care in the patient with cardiac dysfunction while providing information, physical comfort, and emotional support. (qsen.org)
- Provide safe and effective care to the client experiencing cardiac dysfunction. (qsen.org)
- PCC) Provide patient-centered care for a patient with cardiac dysfunction while considering patient values, preferences and expressed needs. (qsen.org)
Thermodilution cardiac output2
- Harris AP, Miller CF, Beattie C, et al (1985) The slowing of sinus rhythm during thermodilution cardiac output determinations and the effect of altering injectate temperature. (springer.com)
- The accuracy and reproducibility of noninvasive cardiac output determinations by computer-averaged impedance cardiography were compared with those of simultaneously performed thermodilution cardiac output. (semanticscholar.org)
Reduced cardiac index1
- In the logistic regression analysis, a reduced cardiac index at 2 and 6 hours after admission in the ICU had the strongest independent predictive value for postoperative complication. (biomedcentral.com)
Catheterization1
- METHODS: CO values using the Aesculon monitor and PAC thermodilution were simultaneously recorded during cardiac catheterization in children. (uzh.ch)
Blood pumped by the heart1
- There is no need to present the details of the methods available for measuring the amount of blood pumped by the heart, the cardiac output. (annals.org)
Peripheral3
- Effect of mean circulatory filling pressure and other peripheral circulatory factors on cardiac output. (springer.com)
- The precise volume flow level that will induce high-output failure or extremity ischemia will vary with each patient, based on co-morbidities, especially the degree of cardiac disease and peripheral arterial disease. (transonic.com)
- What effect does changing cardiac output or total peripheral resistance have, whilst not changing the other? (brainscape.com)
Increases8
- American Council on Exercise reports that when your fitness level has increased enough to start HIIT or high-intensity interval training, your cardiac efficiency increases by elevating your heart's stroke volume and cardio output at a heart rate that is lower. (livestrong.com)
- An excess of thyroid hormone acts very much like epinephrine and increases cardiac output as well. (livestrong.com)
- When CO increases in a healthy but untrained individual, most of the increase can be attributed to an increase in HR. Change of posture, increased sympathetic nervous system activity, and decreased parasympathetic nervous system activity can also increase cardiac output. (statemaster.com)
- This is a product of stroke volume or cc's of blood per beat times the heart rate so cardiac output increases with either an increase in stroke volume or heart rate or both. (healthtap.com)
- The effects of vasodilation, how the blood quantity increases and decreases along with the blood flow and the arterial blood flow and resistance on cardiac output is discussed in this review Article. (omicsonline.org)
- Increasing the heart rate effectively increases the cardiac output by increasing the number of cardiac volumes of blood released into the system. (ebme.co.uk)
- Cardiac output increases by 30 to 50% during pregnancy [1-5]. (ibimapublishing.com)
- Sympathetic activity increases heart rate, maintaining cardiac output. (cueflash.com)
Myocardial1
- The results show that the mice, following myocardial infarction, have improved cardiac output as a result of this method, as compared to untreated animals. (news-medical.net)
Congestive cardiac1
- We report a case of an iatrogenic femoral arteriovenous fistula, causing worsening congestive cardiac failure, in a 34-year-old marathon runner. (hindawi.com)
Pulse contour analysis1
- In this review on cardiac output methods used in pharmacology, the Fick principle, indicator dilution techniques, arterial pulse contour analysis, ultrasound and bio-impedance are reviewed. (biomedsearch.com)
Analysis including card1
- These changes require a detailed haemodynamic analysis including cardiac output. (ovid.com)
Left ventricle5
- A 2017 American Diabetes Association study that looked at 53 adolescents with Type 1 diabetes concluded that exercise training improves the cardiac output and exercise capacity by increasing the functions of the left ventricle. (livestrong.com)
- EF is the fraction of blood ejected by the Left Ventricle (LV) during the contraction or ejection phase of the cardiac cycle or Systole. (statemaster.com)
- it usually refers to left ventricle output. (thefreedictionary.com)
- Cardiac output is the amount of blood ejected by the left ventricle in one minute. (omicsonline.org)
- Cardiac output (CO) is the volume of blood being pumped by the heart, by left ventricle in the time interval of one minute. (omicsonline.org)
Venous return4
- Relative importance of venous and arterial resistances in controlling venous return and cardiac output. (springer.com)
- Over the long term, cardiac output and venous return are equal, leading to a rather complex algebraic relationship. (ebme.co.uk)
- Guyton's cardiac function and venous return curves provide a graphical solution to these equations. (ebme.co.uk)
- Cardiac muscle fibers are stretched by increased blood volume returning to the heart (increased venous return and EDV). (cueflash.com)
Critically2
- Dark PM, Singer M (2004) The validity of trans-esophageal Doppler ultrasonography as a measure of cardiac output in critically ill adults. (springer.com)
- McLeans AS, Needham A, Stewart D, Parkin R. Estimation of cardiac output by noninvasive echocardiographic techniques in the critically ill subjects. (springer.com)
Nursing diagnosis1
- decreased cardiac output a nursing diagnosis accepted by the North American Nursing Diagnosis Association, defined as a state in which inadequate blood is pumped by the heart to meet the metabolic demands of the body. (thefreedictionary.com)
Algorithm1
- Moreover, the ability of the PiCCO algorithm to track changes, induced or spontaneous, in cardiac output has not been determined unequivocally. (wiley.com)
Bioimpedance1
- OBJECTIVE To evaluate the accuracy and precision of an advanced thoracic bioimpedance cardiac output monitor by comparing it with conventional thermodilution. (semanticscholar.org)
Hypertension5
- Pulmonary hypertension (PH) is characterised by a progressive decline in cardiac output (CO) and right heart failure. (ersjournals.com)
- Pulmonary arterial hypertension (PAH) is a disease characterised by an elevated pulmonary vascular resistance (PVR) that ultimately results in a progressive decline in cardiac output (CO) due to right ventricular failure [ 1 ]. (ersjournals.com)
- How does hypertension increase cardiac output? (healthtap.com)
- If someone has low cardiac output, does that mean they have hypertension? (healthtap.com)
- What is the relation of hypertension and decreased cardiac output? (healthtap.com)
NICOM5
- We evaluated the accuracy, precision, responsiveness, and reliability of NICOM for detecting cardiac output changes. (springer.com)
- Cardiac output measured by NICOM had most often acceptable accuracy, precision, and responsiveness in a wide range of circulatory situations. (springer.com)
- The NICOM® ICU (Intensive Care Unit) and CCU (Critical Care Unit) is a non-invasive Cardiac Output monitor based on Haemodynamic Reactance Mapping, intended for the measurement and display of Cardiac Output and ECG (electrocardiogram), both at rest and under medical tests. (medgadget.com)
- NICOM® (noninvasive cardiac output monitor) is a bioreactance-based technology that has been broadly validated, but its specific application in right heart failure and PH is unknown. (ersjournals.com)
- NICOM (Cheetah) is a new non-invasive cardiac output (CO) monitor based on bioreactance. (biomedcentral.com)
Index8
- To assess the influence of the cardiac output on sevoflurane pharmacodynamics we measured cardiac index (CI) simultaneously with anaesthetic concentration in the end tidal gas mixture (ETsev) and anaesthesia depth based on Entropy monitor data. (bmj.com)
- Cardiac index (CI) is the cardiac output proportional to the body surface area (BSA). (deltexmedical.com)
- using cardiac index= CO/Body surface area ex. (brainscape.com)
- Does cardiac index change with age? (brainscape.com)
- To evaluate the reliability of the vital signs to evaluate circulatory stability as reflected by cardiac index. (nih.gov)
- Apart from an increase in the sitting posture 30 minutes after the dive, pulmonary capacity for carbon monoxide diffusion and cardiac index decreased, mostly 60 minutes after the dive (−9%, p = 0.0003 and −20%, p = 0.0002 respectively). (bmj.com)
- The decrease in cardiac index was greater in the supine posture (p = 0.0004), and the physiological dead space/tidal volume ratio increased more in the sitting position (p = 0.006). (bmj.com)
- All cases were monitorized with noninvasive cardiac output monitor, and values of cardiac output, cardiac index, stroke volume and endtidal CO2 were measured. (scopemed.org)
Methods4
- Apparatus and methods for non-invasively determining the cardiac output or pulmonary capillary blood flow of a patient using partial re-breathing techniques. (google.com)
- Many methods of cardiac output measurement have been developed, but the number of methods useful for human pharmacological studies is limited. (biomedsearch.com)
- Post-operatively, cardiac output was determined with the PA-TD and pulse contour methods, and the bias and limits of agreement were again calculated. (wiley.com)
- These methods allow one to determine the amount of blood being delivered to the vasculature by the heart, and whether its output is sufficient to sustain the health of the patient. (ebme.co.uk)
Circulation3
- Through this mechanical stimulation, the circulation of the area of the infarction is improved - and the scar shrinks,' says the cardiac specialist. (news-medical.net)
- A direct indicator device for determining the cardiac output according to the thermodilution method embodying two temperature sensors connected to the blood circulation for respectively determining the inlet- and dilution temperatures. (google.com)
- The cardiac output represents the volume of blood that is delivered to the body, and is therefore an important factor in the determination of the effectiveness of the heart to deliver blood to the rest of the body, (i.e., determining heart failure, inadequate circulation, etc). (ebme.co.uk)
Systolic1
- All these points are associated to distinct physiological events within the systolic part of the cardiac cycle, i.e., located after the QRS complex onset. (wikipedia.org)
Estimation of cardiac output1
- T he estimation of cardiac output by the pulse contour method was re-introduced more than two decades ago by Wesseling et al. (wiley.com)
Circulatory1
- Prolonged kinetics of VO 2 or VCO 2 during recovery from maximal exercise represent impairment of circulatory response to exercise and delayed recovery of cardiac output after exercise. (onlinejacc.org)