Problems playing this file? See media help. Arrhythmias, also known as cardiac arrhythmias, are irregularities in the heartbeat, including when it is...

16-year-old girl's heartbeat Problems playing this file? See media help. The cardiac cycle is the performance of the human heart from the beginning of one heartbeat...

activity as well as of cardiac responses to programmed electrical stimulation - clinical cardiac electrophysiology. However, cardiac electrophysiology also...

In cardiac physiology, cardiac output (CO), also known as heart output and often denoted by the symbols Q {\displaystyle Q} , Q ˙ {\displaystyle {\dot...

Cardiac physiology or heart function is the study of healthy, unimpaired function of the heart: involving blood flow; myocardium structure; the electrical...

An artificial cardiac pacemaker, commonly referred to as simply a pacemaker, is an implanted medical device that generates electrical pulses delivered...

Cardiac catheterization (heart cath) is the insertion of a catheter into a chamber or vessel of the heart. This is done both for diagnostic and interventional...

muscle, although with some important differences. Electrical stimulation in the form of a cardiac action potential triggers the release of calcium from the...

A cardiac stress test is a cardiological examination that evaluates the cardiovascular system's response to external stress within a controlled clinical...

released directly by nerves that stimulate cardiac muscle cells, have a toxic effect and can lead to decreased cardiac muscular function or "stunning"...