Author/Authors :
Porciani، نويسنده , , Maria Cristina and Dondina، نويسنده , , Cristina and Macioce، نويسنده , , Roberto and Demarchi، نويسنده , , Gabriele and Pieragnoli، نويسنده , , Paolo and Musilli، نويسنده , , Nicola and Colella، نويسنده , , Andrea and Ricciardi، نويسنده , , Giuseppe and Michelucci، نويسنده , , Antonio and Padeletti، نويسنده , , Luigi، نويسنده ,
Abstract :
In 21 patients implanted with a biventricular pacing device with programmable interventricular delay (VVd), the myocardial performance index (MPI) was evaluated during spontaneous sinus rhythm, simultaneous biventricular pacing, and sequential biventricular pacing at different VVds and atrioventricular delays (AVds). The AVd-VVd combination associated with the minimum MPI defined patient-tailored biventricular pacing. Simultaneous biventricular pacing significantly improved MPI compared with spontaneous sinus rhythm. An additional improvement was obtained by tailored biventricular pacing. The optimal AVds were significantly shorter during right ventricular preactivation than during left ventricular preactivation.
