Archives

Is located in the inferior aspect of the right atria; functions to slow the conduction speed to allow for atrial conduction prior to ventricular conduction Read More

A dual chamber pacemaker that fires first in the atria, then in the ventricle similar to normal cardiac functioning – allowing for atrial kick. 1. Read More

The top of the heart located approximately at the 2nd intercostal space. The heart is a wondrous organ about the size of your fist, weighing Read More

The baseline or isoelectric line is a reference point for the waves, intervals and segments. While the PR segment is often used as the baseline, Read More

With adrenergic (sympathetic) stimulation, Beta 1 and Beta 2 responses occur; Beta 1 effects are increased heart rate and increased force of contraction resulting in Read More

The valve that separates the left atria and ventricle. It is also called the mitral valve (2 leaf). Valves act as gates ensuring unidirectional blood Read More

A wave that includes both an upright (positive) and downward (negative) deflection. 1. Six Second ECG Guidebook (2012), T Barill, p. 192 Read More

The standard three lead system that forms Einthoven’s triangle with the white electrode (right shoulder), black electrode (left shoulder) and red electrode (left lower abdomen) Read More

The purpose of the cardiac cycle is to effectively pump blood. The purpose of the cardiac cycle is to effectively pump blood. The right heart Read More

Approximately 65% of blood volume is normally contained in the venous system. With increased energy demands, blood flow must increase. Sympathetic nervous system stimulation is Read More