搜索结果: 1-15 共查到“特种医学 cardiac”相关记录21条 . 查询时间(0.193 秒)
Effect of helium breathing on cardiac arrhythmias induced by coronary occlusion and digitalis in the cat
cardiac arrhythmia helium breathing coronary occlusion digitalis cat animal
2009/7/20
Effect of helium breathing on cardiac arrhythmias induced by coronary occlusion and digitalis in the cat.
Hydrostatic pressure and mammalian cardiac-pacemaker function
animal mice Guinea Pig dog Rabbits Rat pacemaker cardiac
2009/7/20
Hydrostatic pressure and mammalian cardiac-pacemaker function.
Combined influence of temperature and hydrostatic pressure on cardiac conduction
cardiac temperature hydrostatic animal dog rabbit
2009/7/17
Interactions of temperature and hydrostatic pressure were examined in three types of cardiac tissue. Decreases in temperature from 37 degrees C to 27 degrees C and increases in pressure from 1 to 150 ...
Instrumentation for measuring cardiac output by direct Fick method during liquid ventilation
equipment fluorocarbon oxygenation
2009/7/16
A closed-circuit fluorocarbon oxygenation system was designed and incorporated into an existing liquid breathing system (LBS) to allow measurement of an animal's oxygen consumption during liquid venti...
Combined effect of beating rate and hydrostatic pressure on excitation in cardiac muscle
cardiac heart rate hydrostatic animal dog
2009/7/16
Canine cardiac Purkinje fibers stimulated at frequencies from 1-4 Hz were exposed to hydrostatic pressures of 1 and 150 ATA. Both increases in stimulation frequency and pressure slowed conduction and ...
Hyperbaric exposures alter cardiac excitation-contraction coupling
Cardiac excitation-contraction electrocardiographic heliox hyperbaric
2009/7/16
Cardiac excitation-contraction (E-C) coupling variables were measured in anesthetized cats during helium-oxygen dives to 1000 fsw (305 msw). At constant pacing rates of 190-300/min the delay between o...
Cardiac arrhythmias and heart rate changes in prolonged hyperbaric air exposures
human Cardiac arrhythmia heart rate exercise air
2009/7/15
Daily resting and exercise electrocardiograms from 81 healthy subjects taking part in eight different air saturation chamber experiments at depths of 2-132 ft sea water gauge (fswg) were recorded and ...
Hyperbaric exposure to a 5 ATA He-N2-O2 atmosphere affects the cardiac function and organ blood flow distribution in awake trained rats
trimix cardiac blood flow animal rat
2009/7/14
Previous studies on rats have demonstrated an increased myocardial blood flow (MBF) in spite of an unchanged cardiac output (CO), mean arterial pressure (MAP), and heart rate (HR) when rats were expos...
Cardiac output by impedance cardiography during head-out water immersion
human immersion cardiac
2009/7/14
This study was undertaken to ascertain the suitability of impedance cardiography for qualifying cardiac output during water immersion where the electrodes were wet. The cardiac output was compared dur...
Effect of 5 bar oxygen on cardiac output and organ blood flow in conscious rats
HBO equipment hyperbaric cardiac output animal rat
2009/7/14
The distribution of cardiac output (CO) was studied in conscious rats during hyperbaric oxygen (HBO) exposure to 5 bar for 60 min. Heart rate (HR) and arterial blood pressure (ABP) were continuously r...
Doppler-echocardiography study of cardiac function during a 36 atm (3,650 kPa) human dive
saturation pulmonary cardiac output human
2009/6/8
To determine the influence of a saturation dive on cardiac function, Doppler-echocardiographic measurements were compared at sea level and during a 36 atm (3,650 kPa) He-O2 dive (gas density: 7 g/lite...
Computer simulation of microscopic cerebral air emboli absorption during cardiac surgery
nitrogen model cerebral blood flow air air emboli
2009/6/8
Microscopic cerebral arterial air emboli (MCAAE) cause neurologic injury during cardiac surgery. We used a mathematical model of gas absorption to gain a preliminary assessment of what physical or phy...
The aim of this study was to evaluate the prevalence and the possible clinical relevance of circulating bubbles after a recreational scuba dive. Twenty healthy subjects (18 male, 2 female; age range 2...
Cardiac gas embolism after central venous catheter removal
Adolescent Catheterization Central Venous instrumentation Coronary Disease etiology
2009/6/2
Clinical images reporting intracardiac gas level are sparce and, to our knowledge, the presence of gas embolism into the coronary arteries has never been reported. We describe the case of a young man ...
Open chamber cardiac surgery: A clinical injury model for arterial gas embolism
Bubbles CAGE cardiovascular investigations research
2009/5/25
Cerebral arterial gas embolism (CAGE) can occur
in divers breathing compressed gas and as a consequence
of some medical procedures. Open chamber left heart
surgery, in particular, is invariably com...