Contribution of left atrial pressure and dimension to signal-averaged P-wave duration in patients with chronic congestive heart failure.
In a group of patients with chronic heart failure, a longer P-wave duration on signal-averaged electrocardiogram was found in those patients with higher pulmonary capillary wedge pressure, whereas the left atrium end-systolic diameter was not significantly different. Furthermore, an acute reduction in pulmonary capillary wedge pressure induced by sodium nitroprusside infusion was associated with a reduction in P-wave duration.
Faggiano
P
P
Cardiology Division, Salvatore Maugeri Foundation, IRCCS, Gussago, Brescia, Italy.
D'Aloia
A
A
Zanelli
E
E
Gualeni
A
A
Musatti
P
P
Giordano
A
A
D000328:Adult; D000368:Aged; D000959:Antihypertensive Agents / Q000008:administration & dosage / Q000627:therapeutic use; D001281:Atrial Fibrillation / Q000503:physiopathology; D016279:Atrial Function, Left; D002311:Cardiomyopathy, Dilated / Q000150:complications; D002908:Chronic Disease; D003327:Coronary Disease / Q000150:complications; D004562:Electrocardiography / Q000187:drug effects / Q000379:methods*; D005260:Female; D006325:Heart Atria / Q000473:pathology*; D006333:Heart Failure / Q000209:etiology / Q000473:pathology / Q000503:physiopathology*; D006801:Humans; D007262:Infusions, Intravenous; D008297:Male; D008875:Middle Aged; D009599:Nitroprusside / Q000008:administration & dosage / Q000627:therapeutic use; D011669:Pulmonary Wedge Pressure / Q000187:drug effects; D012307:Risk Factors; D012815:Signal Processing, Computer-Assisted; D013599:Systole
D000959:Antihypertensive Agents; D009599:Nitroprusside