Page 381 - ECG dr shamol_Slide

In sick sinus syndrome there is a malfunctioning sinus node.

Several arrhythmias can result from this:

Symptomatic slow sinus bradyardia in the absence of

medication

Sinus Arrest or exit block

Combinations of sinoatrial and atrioventricular conductions

disturbances

Brady-tachycardia syndrome; typically there is sinus

bradycardia, sinus arrest or SA-block which is alternated by

periods with fast or (ir)regular atrial arrhythmias (atrial

fibrillation, atrial flutter, atrial tachyardia or sinus tachycardia ).

Usually a pacemaker is implanted to prevent bradycardia and

tachycardias are 'topped off' with anti-arrhythmics, such as

beta blockers.