Left ventricular performance improves late after aortic valve replacement in patients with aortic stenosis and reduced ejection fraction.
EF in patients with aortic stenosis and reduced EF who underwent aortic valve replacement did not improve by 1 week postoperatively despite rectification of afterload mismatch. By 6 months, however, EF significantly improved without any further change in ventricular loading conditions. This implies that the benefit from aortic valve replacement (when measured by LV ejection performance) may not be evident until late postoperatively.
Robiolio
P A
PA
Department of Internal Medicine, Duke University Medical Center, Durham, North Carolina 27710, USA.
Rigolin
V H
VH
Hearne
S E
SE
Baker
W A
WA
Kisslo
K B
KB
Pierce
C H
CH
Bashore
T M
TM
Harrison
J K
JK
D000368:Aged; D001021:Aortic Valve; D001024:Aortic Valve Stenosis / Q000175:diagnosis / Q000503:physiopathology* / Q000601:surgery; D001705:Bioprosthesis; D005260:Female; D006350:Heart Valve Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D011184:Postoperative Period; D011446:Prospective Studies; D013318:Stroke Volume; D013997:Time Factors; D016277:Ventricular Function, Left