Predicting chronic optimal a-v intervals for biventricular pacing via observed inter-atrial delay
作者： James A. Coles , Mehdi Razavi , Michael R. Ujhelyi , Vadim Levin
DOI:
关键词: Coronary sinus 、 Av delay 、 Cardiac resynchronization therapy 、 Medicine 、 Atrial pacing 、 Conduction time 、 Atrial Lead 、 Cardiology 、 Right atrium 、 Internal medicine
摘要: Methods for optimizing the atrio-ventricular (A-V) delay efficacious delivery of cardiac resynchronization therapy. In CRT devices, programmed A-V starts with detection electrical activity in right atrium (RA). Thus, a major component is time required inter-atrial conduction (IACT) from RA to LA. This IACT can be measured during implantation as atrial lead stimulation artifact local electrograms coronary sinus (CS) catheter. Assuming that beginning LA contraction closely corresponds activity, optimal AV should related between start and plus duration contraction. Thus ‘during pacing’ at correlated echocardiographically defined paced (PAV).
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