Search results
Results from the WOW.Com Content Network
A cardiac function curve is a graph showing the relationship between right atrial pressure (x-axis) and cardiac output (y-axis). [ citation needed ] Superimposition of the cardiac function curve and venous return curve is used in one hemodynamic model.
A Wiggers diagram modified from [1]. A Wiggers diagram, named after its developer, Carl Wiggers, is a unique diagram that has been used in teaching cardiac physiology for more than a century.
The membrane resistance is a function of the number of open ion channels, and the axial resistance is generally a function of the diameter of the axon. The greater the number of open channels, the lower the r m. The greater the diameter of the axon, the lower the r i.
Cardiac physiology or heart function is the study of healthy, unimpaired function of the heart: involving blood flow; myocardium structure; the electrical conduction system of the heart; the cardiac cycle and cardiac output and how these interact and depend on one another.
The slope of ESPVR (Ees) represents the end-systolic elastance, which provides an index of myocardial contractility. The ESPVR is relatively insensitive to changes in preload, afterload, and heart rate. This makes it an improved index of systolic function over other hemodynamic parameters like ejection fraction, cardiac output, and stroke volume.
In cardiology, ventricular remodeling (or cardiac remodeling) [1] refers to changes in the size, shape, structure, and function of the heart.This can happen as a result of exercise (physiological remodeling) or after injury to the heart muscle (pathological remodeling). [2]
Cardiac function curve.In diagrams illustrating the Frank–Starling law of the heart, the y-axis often describes the stroke volume, stroke work, or cardiac output.The x-axis often describes end-diastolic volume, right atrial pressure, or pulmonary capillary wedge pressure.
With a heart rate of 80 beats/minute and a systolic ejection period of 0.33 seconds, the cardiac output was 5 liters/minute. During simultaneous measurement of pressures in the left ventricle and aorta (with the use of one catheter in the left ventricle and a second in the ascending aorta), the mean systolic pressure gradient was measured at 50 ...