Treatment of bradycardias – who needs a pacemaker?

Seiler, Jens (2014). Treatment of bradycardias – who needs a pacemaker? Therapeutische Umschau, 71(2), pp. 105-110. Huber 10.1024/0040-5930/a000489

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Bradyarrhythmias are caused by a disturbed impulse formation in the sinus node and/or a disturbed impulse conduction and can be subclassified clinically as sinus node dysfunction, atrioventricular (AV) block, or functional bradycardia. Persistent bradycardia can be diagnosed by standard ECG. For diagnosis of intermittent bradycardia, often long-term ECG monitoring and/or additional testing is necessary. Symptomatic bradycardias are the standard indication for cardiac pacing after exclusion of reversible causes. Since sinus node dysfunction is associated with a good prognosis, pacing in this condition is only indicated in the presence of bradycardia-related symptoms. For prognostic reasons, pacemaker implantation is indicated in third degree AV block and second degree AV block Mobitz Type II, even if asymptomatic. Cardiac pacing for recurrent unpredictable neurocardiogenic syncope due to a cardioinhibitory reflex should be considered in certain circumstances. The implantation of cardiac pacemakers has been performed for more than half of a century. Due to the enormous technological progress, pacemaker implantations can nowadays be performed under local anesthesia in an outpatient setting. However, complications of pacemaker therapy are still not uncommon.

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