conclusions in this study, sick sinus syndrome and pacemaker mode followed by syncope were independently associated with increased mortality. results survival data were available for 1030 (80%) patients (median age = 71 years [5th to 95th percentile range: 26 - 86 years]) and follow-up was completed for 84.28% of them. according to the results, 56% of the patients had received dual-chamber syst...

This report describes the data of the Spanish Registry of Pacemakers, based on the European Pacemaker Identification Card, and the changes in the use of different stimulation modes since 1994. Of note is the significant and steady change towards more physiological modes of stimulation (which maintain atrioventricular synchrony). These modes accounted in 2003 for 69.9% among patients with sick s...

A total of 381 patients with established (156) or potential (225) sinoatrial dysfunction were included in a 10-year prospective survey to determine the course of the disease and the benefits of pacing. With the exclusion of nine patients who were lost to follow-up, 61 were fitted with pacemakers. The overall survival of patients with established and potential dysfunction was similar and apparen...

A patient is described who developed symptomatic sinus bradycardia as low as 20 beats per minute and sinus arrest of up to 4.4 seconds while receiving guanethidine, 75 mg daily. Tbe bradycardia resolved following discontinuation of the drug and reappeared upon challenge with i t Intrinsic disease of the sinoatrial and atrioventricular nodes was evidenced 3 weeks following discontinuation of tbe...