Do atrial tachyarrhythmias beget ventricular tachyarrhythmias in defibrillator recipients?
Do atrial tachyarrhythmias beget ventricular tachyarrhythmias in defibrillator recipients?
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DOI:
10.1016/s0735-1097(02)01957-5
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发表时间:
2002-07-17
影响因子:
24
通讯作者:
Lerman, BB
中科院分区:
文献类型:
--
作者:
Stein, KM;Euler, DE;Lerman, BB
Objectives This study was designed to analyze the incidence of "dual tachycardia"-ventricular tachycardia (VT) or ventricular fibrillation (VF) preceded by paroxysmal atrial tachycardia (AT) or atrial fibrillation (AF)-in patients receiving dual-chamber implantable cardioverter defibrillators (ICDs).Background Paroxysmal AT/AF occurs commonly in patients who receive ICDs for the treatment of life-threatening VT/V-F. Although AF is associated with an adverse prognosis in the setting of structural heart disease, the relationship between AT/AF and VT/V-F is unclear.Methods We followed 537 patients undergoing implantation of the Jewel AF ICD (Model 7250, Medtronic, Minneapolis, Minnesota) for 11.4+/-8.2 months. These included 398 patients with a history of at least two episodes of AT or AF during the preceding year as well as 139 patients enrolled because of VT/V-F alone.Results There were 233 dual tachycardia episodes in 45 patients during follow-up. Overall, 8.9% of episodes detected as VT/VF were dual tachycardias, and 20.3% of patients with VT/VF had at least one dual tachycardia episode. The median duration of AT/AF preceding the first VT/VF detection was 1.09 h (25% to 75% quartile 0.24 to 33.4 h). When AT/AF continued between two consecutive VT/V-F detections, the median interdetection interval was 11 min. When AT/AF terminated either because of a ventricular therapy or spontaneously, the median interdetection interval was prolonged to 71 h (p