Impact of heart rate and atrioventricular delay on left ventricular diastolic filling in patients with dual-chamber pacing for sick sinus syndrome or atrioventricular block.
We examined the effect of left ventricular filling on different combinations of programmable heart rate and atrioventricular delay in patients with dual-chamber pacemakers. Pacing mode with heart rates of 60 beats/min and 156 ms of atrioventricular delay induced a diastolic pattern that resembles more than others the one observed in healthy subjects in sinus rhythm.
Cattedra di Cardiologia, Dipartimento Medico Chirurgico di Cardiologia, Seconda Università di Napoli, Italy.
M
M
de Divitiis
M
M
Galderisi
L
L
Santangelo
M S
MS
Mayer
O
O
de Divitiis
A
A
Iacono
D000368:Aged; D002304:Cardiac Pacing, Artificial / Q000379:methods*; D015150:Echocardiography, Doppler; D004562:Electrocardiography; D005260:Female; D006327:Heart Block / Q000503:physiopathology* / Q000628:therapy; D006339:Heart Rate; D006352:Heart Ventricles / Q000000981:diagnostic imaging / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009200:Myocardial Contraction; D012804:Sick Sinus Syndrome / Q000503:physiopathology* / Q000628:therapy; D016277:Ventricular Function, Left / Q000502:physiology*