[Permanent cardiac stimulation after aortic valve replacement: incidence, predictive factors and long-term prognosis].
Between January 1981 and June 1992, 382 patients, operated by the same surgical team, underwent aortic valve replacement for pure severe aortic stenosis. This population was divided into 2 groups according to whether or not surgery was complicated by the development of a conduction defect (atrioventricular and/or intraventricular block), necessitating permanent cardiac pacing. The aim of this study was to analyse not only the incidence and predictive factors but also the long-term prognosis of the paced patients (Group II: 22 patients) in comparison with the control group (Group I: 360 patients). The results showed: the incidence of permanent cardiac pacing after this type of surgery remains low (5.7%); the predictive factors of atrioventricular block requiring permanent pacing were: pre-existing conduction defect (p < 0.02), decreased ejection fraction (p < 0.05), calcification extending to the subaortic interventricular septum (p < 0.0001); the long-term prognosis of the patients was good with 5 and 10 year actuarial survival rates of 95.4% and 68.9% respectively, identical to those of the control group.
Boughaleb
D
D
Service de cardiologie, CHU Morvan, Brest.
Mansourati
J
J
Genet
L
L
Barra
J
J
Mondine
P
P
Blanc
J J
JJ
D000206:Actuarial Analysis; D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001021:Aortic Valve; D002304:Cardiac Pacing, Artificial; D005260:Female; D005500:Follow-Up Studies; D006327:Heart Block / Q000453:epidemiology / Q000209:etiology* / Q000628:therapy; D006350:Heart Valve Prosthesis / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D016019:Survival Analysis