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{{Chapter|Sinus node rhythms and arrhythmias}} | {{Chapter|Sinus node rhythms and arrhythmias}} | ||
[[Image:SSS_ecg_001.jpg|thumb|ECG with Sick Sinus Syndrome. Rapid atrial fibrillation abruptly stops.]] | |||
In sick sinus syndrome there is a malfunctioning sinus node. Several arrhythmias can result from this: | In sick sinus syndrome there is a malfunctioning sinus node. Several arrhythmias can result from this: | ||
* Symptomatic slow [[ | * Symptomatic slow [[Sinus Bradycardia]] in the absence of medication | ||
* [[ | * [[Sinus Arrest]] or exit block | ||
* Combinations of sinoatrial and atrioventricular conductions disturbances | * Combinations of sinoatrial and atrioventricular conductions disturbances | ||
* Brady-tachycardia syndrome; typically there is sinusbradycardia, sinusarrest or SA-block which is alternated by periods with fast or (ir)regular atrial arrhythmias ([[Atrial Fibrillation|atrial fibrillation]], [[Atrial Flutter|atrial flutter]], [[Atrial Tachycardia|atrial tachyardia]] or [[sinustachycardia]]). | * Brady-tachycardia syndrome; typically there is sinusbradycardia, sinusarrest or SA-block which is alternated by periods with fast or (ir)regular atrial arrhythmias ([[Atrial Fibrillation|atrial fibrillation]], [[Atrial Flutter|atrial flutter]], [[Atrial Tachycardia|atrial tachyardia]] or [[sinustachycardia]]). | ||
Usually a [[pacemaker]] is implanted to prevent bradycardia and tachycardias are 'topped off' with anti-arrhythmics, such as beta blockers. |