Archives

Insufficient supply of oxygen to meet the oxygen demands of tissue. Anaerobic metabolism becomes increasingly important during periods of ischemia. Ischemia results from an inadequate Read More

Equipped with a carefully formed clinical impression of the patient, a systematic approach to 12 lead ECG interpretation makes the 12 lead ECG a reliable Read More

Also called the baseline, the straight line that is present when no electrical activity is present. The baseline or isoelectric line is a reference point Read More

A cardiac rhythm with the impulse originating in the ventricles and an absence of atrial activity (no P waves); heart rate is 20-40/minute; cardiac output Read More

A small notch in the QRS where the ST segment begins. The point where the S Wave ends and begins to flatten out. Figure 4.13 Read More

The unit of energy used for defibrillation and cardioversion; technically a joule is equal to power (voltage X current) times duration in seconds. 1. Six Read More

Connects the atria to the ventricle and slows the impulse conduction speed sufficiently to allow for atrial kick; the junction consists of the AV node Read More

A cardiac rhythm that occurs as a backup pacemaker when the sinus node fails to initiate an impulse; the junction typically fires at 40-60/minute; the Read More

A junctional escape complex (JEC) typically arrives to help sustain a rhythm that is faltering. It often arrives after the sinus node experiences either an Read More

A cardiac rhythm that occurs as a backup pacemaker when the sinus node fails to initiate an impulse; the junction typically fires at 40-60/minute; the Read More