Archives

The necrosis or death of myocardial tissue due to insufficient supply of oxygen to the infarcted region. The ability to identify cardiac ischemia, injury and Read More

The muscle layer of the heart; the middle layer that is responsible for contraction of the heart. The muscular myocardium is the thickest layer and Read More

One of two types of fibres that lie parallel to each other; with the influx of calcium into the cell the fibres bind together and Read More

While often a quick look is sufficient to determine whether the QRS complex is upright or inverted, occasionally a QRS complex requires a simple calculation Read More

Commonly refers to the junction; for example, junctional rhythm is also known as nodal rhythm; may also refer to the sinoatrial node. 1. Six Second Read More

When the QRS complex following a premature complex occurs before expected; occurs with PACs (a full compensatory pause occurs with a PVC). 1. Six Second Read More

Non-sustained episodes of ventricular tachycardia (runs of VT) – consisting of 3 or more consecutive PVCs – can also be called bursts or salvos of Read More

Conducting cells of the heart follow a sequence of depolarization followed by a period that they cannot depolarize (absolute refractory period). This is then followed Read More

Also known as regular sinus rhythm or sinus rhythm, this cardiac rhythm is not a dysrhythmia; sinus rhythm originates in the sinoatrial (SA) node with Read More

Paces the heart faster than its non-paced rate to entrain the heart – once the heart is dominated by the firing of the artificial pacemaker, Read More