Chapters Archive – Page 22 of 22

$Figure 1. Aberrant conduction. The figure shows a supraventriclar extrasystole (an extra atrial impulse, discharged by an ectopic focus outside of the sinoatrial node). The supraventricular extrasystole arrives into the ventricles while the right bundle branch is still refractory, which is why it blocks the impulse. The resulting QRS-complex has a right bundle branch block pattern.$

Aberrant ventricular conduction (aberrancy, aberration)

Aberrant ventricular conduction (aberrancy, aberration) Aberrant conduction is not a mechanism of arrhythmia; it is a ventricular conduction disturbance. It is discussed in this chapter because…

Mechanisms of cardiac arrhythmias: from automaticity to re-entry (reentry)

Mechanisms of cardiac arrhythmias: from automaticity to re-entry This section introduces the most common arrhythmias encountered in clinical practice, beginning with a discussion of the…

The normal electrocardiogram (ECG) waves. ECG interpretation.

How to interpret the ECG: A systematic approach

A systematic approach to ECG interpretation: an efficient and safe method The ECG must always be interpreted systematically. Failure to perform a systematic interpretation of the…