ABC of clinical electrocardiography: Paediatric electrocardiography

ABC of clinical electrocardiography: Paediatric electrocardiography.

ABC of clinical electrocardiography: Atrial arrhythmias.

In adults a tachycardia is any heart rate greater than 100 beats per minute. Supraventricular tachycardias may be divided into two distinct groups depending on whether they arise from the atria or the atrioventricular junction. This article will consider those arising from the atria: sinus tachycardia, atrial fibrillation, atrial flutter, and atrial tachycardia. Tachycardias arising from re-ent...

ABC of clinical electrocardiography: Myocardial ischaemia.

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ABC of clinical electrocardiography. Junctional tachycardias.

Any tachyarrhythmia arising from the atria or the atrioventricular junction is a supraventricular tachycardia. In clinical practice, however, the term supraventricular tachycardia is reserved for atrial tachycardias and arrhythmias arising from the region of the atrioventricular junction as a result of a re-entry mechanism (junctional tachycardias). The most common junctional tachycardias are a...

ABC of clinical electrocardiography: Broad complex tachycardia-Part II.

Fascicular tachycardia Fascicular tachycardia is uncommon and not usually associated with underlying structural heart disease. It originates from the region of the posterior fascicle (or occasionally the anterior fascicle) of the left bundle branch and is partly propagated by the His-Purkinje network. It therefore produces QRS complexes of relatively short duration (0.11-0.14 s). Consequently, ...