[The physiopathology of dual-chamber cardiac stimulation. Apropos a case with a dual-chamber pacemaker, left atrial standstill and heart decompensation].
The paper describes the clinical case of an elderly patient with heart failure, the possessor of a dual-chamber pacemaker programmed in DDD mode, in whom a complete interatrial block with left atrial standstill was diagnosed. The authors discuss the physiopathological aspect of the case which is a paradigmatic example of the problems related to dual-chamber pacing. In particular, the utility of an echo-Doppler assessment of the mechanical activity of the atria is emphasized together with a careful choice of the optimal atrioventricular delay in programming and the follow-up of dual-chamber pacing.
Simoncelli
U
U
Divisione di Cardiologia, Ospedale S. Orsola Fatebenefratelli, Brescia.
Marchetti
A
A
Faggiano
P
P
Sorgato
A
A
Rusconi
C
C
D000368:Aged; D000369:Aged, 80 and over; D004452:Echocardiography; D004562:Electrocardiography; D006325:Heart Atria / Q000503:physiopathology; D006327:Heart Block / Q000175:diagnosis / Q000503:physiopathology* / Q000628:therapy; D006333:Heart Failure / Q000175:diagnosis / Q000503:physiopathology* / Q000628:therapy; D006801:Humans; D008297:Male; D010138:Pacemaker, Artificial
Fisiopatologia della stimolazione cardiaca bicamerale. A proposito di un caso con pacemaker bicamerale, paralisi atriale sinistra e scompenso cardiaco.