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Effective depolarization of the atria and/or the ventricles by an artificial pacemaker. An electronic pacemaker, or just pacemaker, delivers electrical current to the heart to Read More

The absence of pulse and respiration – clinical death. 1. Six Second ECG Guidebook (2012), T Barill, p. 193 Read More

A complete cardiac cycle occurs with each audible ‘lub-dub’ that is heard with a stethoscope. During this heartbeat, both atria simultaneously contract followed soon after Read More

The ability to identify cardiac ischemia, injury and infarction is vital in the management of the majority of cardiac emergencies. Most sudden cardiac deaths are Read More

What is it? Why is it Vital? The amount of blood pumped out of the ventricle in a minute (most often refers to the blood Read More

Excess fluid between the parietal and pleural layers surrounding the heart restrict the contraction of the heart; early signs of cardiac tamponade may be a Read More

More accurately called synchronous cardioversion, an electrical current is applied to the heart when the ventricles are depolarizing (R wave as opposed to firing on Read More

The chemicals of the sympathetic nervous system – epinephrine, norepinephrine, and dopamine. 1. Six Second ECG Guidebook (2012), T Barill, p. 193 Read More

The chambers of the heart are the main drivers within an intricate pathway, delivering blood to the lungs for gas exchange and enriching the body’s Read More

Pertaining to the actions of the parasympathetic nervous system; chemical involved in producing cholinergic responses is acetylcholine. 1. Six Second ECG Guidebook (2012), T Barill, Read More