Abstract
Sinus node dysfunction (SND) is the indication for pacemaker implantation in 35–50% of all patients undergoing primary pacemaker implantation [1]. SND is characterized by syncopal attacks, dizzy spells, or heart failure due to sinus arrest, sino-atrial block, or sinus bradycardia. Approximately 50% of patients with SND suffers from paroxysmal atrial ~brillation, the brady-tachy syndrome, which is associated with an increased risk of arterial thromboembolism [2]. Although it is well recognized that cardiac pacing is effective in abolishing bradycardia-related symptoms in patients with SND, the most optimal pacing mode is, however, still debated. The present review will focus upon the results of recently published prospective trials on selection of pacing mode in SND and the clinical consequences of these results.
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