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Showing 1 to 20 of 151 for “"cardiac output"”.
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Changes in Cardiac Output With Progressive Work
Made available in DSpace on 2014-12-04T21:57:01Z (GMT). No. of bitstreams: 1 0002228.pdf: 8727319 bytes, checksum: aab23fb3e0ac19b7f77948579a4c2cd2 (MD5) Previous issue date: 1950
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Cardiac output estimation using arterial blood pressure waveforms
Cardiac output (CO) is a cardinal parameter of cardiovascular state, and a fundamental determinant of global oxygen delivery. Historically, measurement of CO has been limited to critically-ill patients, using invasive indicator-dilution methods such as thermodilution via Swan-Ganz lines, which …
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A Validation of Cardiovascular Tests by Cardiac Output Measurements
Made available in DSpace on 2014-12-04T21:56:57Z (GMT). No. of bitstreams: 1 0001552.pdf: 4779788 bytes, checksum: 5fcca7d66e4e64a7ce15d713259b3a10 (MD5) Previous issue date: 1949
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Reliability of the Acetylene Single-Breath Method For Measuring Cardiac Output
… technology have now made it possible to analyze cardiac output (Q) with only a single-breath, making measurements during exercise quicker and less invasive for the subject. Certain non-invasive techniques allow for measurement of the disappearance of a soluble inert gas as it diffuses across the …
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Development of a method for calculation of cardiac output using Doppler ultrasound
Cardiac output is the amount of blood pumped by the heart in one minute. The Doppler effect can be used to measure cardiac output by measuring the peak frequency, which is directly proportional to the velocity of blood flowing in the aorta, associated with the Doppler shift signal when an …
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Validation of a new method of determining cardiac output in neonatal foals
… foals. Hypotension may be a function of low cardiac output or increased cardiac output and decreased systemic vascular resistance. In the first instance, treatment would include fluids and/or inotropes and in the second, fluids and/or vasopressors. Therefore, cardiac output measurements are …
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Cardiac output estimation from arterial blood pressure waveforms using the MIMIC II database
The effect of signal quality on the accuracy of cardiac output (CO) estimation from arterial blood pressure (ABP) was evaluated using data from the Multi-Parameter Intelligent Patient Monitoring for Intensive Care (MIMIC) II database. Thermodilution CO (TCO) was the gold standard, and a total of …
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Reliability of a semi-automated CO₂ rebreathing system for cardiac output measures during exercise
… technology for noninvasive determination of cardiac output (Q̇, Lmin⁻¹) offers potential to re-examine measurement stability with established methods involving CO₂ rebreathing. Reproducibility of Q̇ was examined at rest and during steady-state cycle ergometer exercise (x̄ = 51% of V̇O₂pk; SD …
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Effects of Training Upon the Cardiac Output at Ground Level and at 15,000feet Simulated Altitude
Made available in DSpace on 2014-12-04T21:57:03Z (GMT). No. of bitstreams: 1 0004004.pdf: 4566966 bytes, checksum: 61c2c5307c12f04df18fa429fae602e1 (MD5) Previous issue date: 1952
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Maternal and cardiac output response to vasopressor therapy during spinal anaesthesia for Caesarean Section in severe preeclampsia
… left lateral position, using minimal invasive cardiac output monitoring (LiDCOrapid). A 300 mL colloid preload was then administered. After standard spinal anaesthesia, 20 patients whose mean arterial pressure decreased to a predetermined target value were randomised to 2 groups of 10, to …
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Determination of cardiac output across a range of values in horses by M-mode echocardiography and thermodilution
Determinations of cardiac output (CO) by M-mode echocardio-graphy were compared with simultaneous determinations by thermodilution in 2 conscious and 5 anesthetized horses. A range of cardiac outputs was induced by use of a pharmacological protocol (dopamine, 4 ug/kg/min, dobutamine, 4 ug/kg/min, …
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Automatic Control Strategies of Mean Arterial Pressure and Cardiac Output. MIMO controllers, PID, internal model control, adaptive model reference, and neural nets are developed to regulate mean arterial pressure and cardiac output using the drugs sodium Nitroprusside and dopamine
… such as the Mean Arterial Pressure (MAP) and the Cardiac Output (CO) at the desired level. The implementation of optimal control system is very essential to improve the quality of patient care and also to reduce the workload of healthcare staff and costs. Many researchers have conducted studies …
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Continuous estimation of cardiac output and arterial resistance from arterial blood pressure using a third-order Windkessel model
… system because they lack frequent measures of cardiac output (CO), the average blood flow out of the left ventricle. CO is monitored via intermittent thermodilution measurements which are highly invasive and only applied to the sickest ICU patients. The lack of frequent CO measurements has …
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The effects of graduated exercise at the piano on the pianist's cardiac output, forearm blood flow, heart rate, and blood pressure
… graduated exercise at the piano on the pianist's cardiac output, forearm blood flow, heart rate, and blood pressure. Also considered were the effects of piano practice conditioning, general cardiovascular conditioning, and acute cigarette smoking on the aforementioned parameters during and after …
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Comparative effects of halothane, isoflurane, and enflurane on the hemodynamics of newborn and older pigs using ascorbic acid dilution to measure cardiac output
This document only includes an excerpt of the corresponding thesis or dissertation. To request a digital scan of the full text, please contact the Ruth Lilly Medical Library's Interlibrary Loan Department (rlmlill@iu.edu).
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Exercise in Ponies: A Study of Myocardial Blood Flow, Coronary Vasodilator Reserve, Regional Distribution of Cardiac Output and Effects of Heart Rate on Coronary Flow
… exercise resulted in a marked increase in cardiac output, mean aortic pressure, right ventricular (RV) systolic and end-diastolic pressure (EDP), left ventricular (LV) EDP, LV max dP/dt, and a pronounced increase in trasmural MBF. Severe exercise resulted in further significant increments …
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The Effect Of Body Position On Cerebral Bllod Flow, Cognition, Cardiac Output, Map,and Motor Function In Patients Undergoing Shoulder Surgery : Lateral Versus Beach Chair Position Under General Anesthesia
… the brain, this in addition to the decrease in cardiac output while sitting, and vasodilation of the general anesthetics all create the perfect storm to offset normal autoregulatory responses. </p> <p>Interestingly, the brain is the least monitored organ under anesthesia. It is evident that this …
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Assessment of Blood Flow in the Human Calf During Maximal Intermittent Dynamic Exercise Utilizing Impedance Plethysmography
… peripheral pulse rate, calf blood volume/beat, cardiac output, cardiac index, heart rate and stroke volume. During rest significant differences (p (LESSTHEQ) .05) between groups were found for peripheral pulse rate, cardiac output, heart rate and stroke volume. During exercise a significant …
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