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The phase of relaxation during the cardiac cycle; occurs for the atria and the ventricles; blood enters the heart’s chambers and the coronary arteries during Read More

ST segment deviation (possible ventricular strain or digoxin dip) Between the QRS complex and the T wave, lies the ST segment. The ST segment usually Read More

A wave that includes both an upright (positive) and downward (negative) deflection. Diphasic is also called Biphasic 1. Six Second ECG Guidebook (2012), T Barill, Read More

Refers to a physiological response that involves the conduction speed through the AV junction; note that a positive dromotropic effect increases the speed of conduction. Read More

Transcutaneous pacing and temporary transvenous pacing or an implanted cardiac pacemaker with a lead in a ventricle (typically right ventricle) that initiates a depolarizing wave Read More

An artificial pacemaker fires first in the atria, then in the ventricle similar to normal cardiac functioning, thus allowing for atrial kick. 1. Six Second Read More

A sub-optimal contracting myocardium due to ischemia, infarction and other cardiac diseases such as cardiomyopathies. 1. Six Second ECG Guidebook (2012), T Barill, p. 195 Read More

Used interchangeably with arrhythmia, refers to any abnormal rhythm – not normal sinus rhythm or sinus tachycardia. 1. Six Second ECG Guidebook (2012), T Barill, Read More

While an ECG is a superior diagnostic tool, experienced practitioners are witness to false positive and false negative ECGs. A false positive ECG occurs when Read More

The EASI (TM) lead system uses a 5 cable connector to estimate a 12 lead ECG. In an effort to reap the advantages of 12 Read More