[Valvular replacement with the Bicarbon mechanical valve. Results after 7 years in 104 patients].
OBJECTIVE
Study of the medium term results of aortic and mitral valve replacement with the Bicarbon' prosthesis.


METHODS
From 1990 to 1996, 109 valves were implanted (70 in aortic position, 31 in mitral position and 4 double replacements). The average age was 61 years and 75% were male. According to the NYHA, 59% of patients were stage III or IV. The average pre-operative ejection fraction was 59.6%. There was re-intervention in 21.1% of patients and 35.3% had an associated procedure during the intervention.


RESULTS
The average follow up was 5.4 +/- 1.98 years in 98 patients (that is 522 patient years). One patient died post-operatively and 19 died later. The overall survival at 7 years was 69.4 +/- 6.3%. Complications, expressed in patient years, were 1.15% for thrombo-embolic complications, 2.1% for haemorrhagic complications. 0.38% for endocarditis, 1.72% for non-infectious peri-prosthetic leaks, and 0.76% for re-interventions. At 7 years, the absence of thrombo-embolic, haemorrhagic, endocarditis, and re-intervention complications was 91.8 +/- 4.2%, 85.3 +/- 4.8%, 95.8 +/- 3.2%, 93.8 +/- 3.5% respectively. According to the NYHA, 95% of patients were in stage 1 or II (p < 0.001).


CONCLUSIONS
Valvular replacement in the aortic or mitral position with the Bicarbon' valve is satisfactory as much in terms of survival as of clinical complications.
Laali
M
M
Service de chirurgie thoracique et cardiovasculaire, Institut de cardiologie, groupe hospitalier La Pitié-La Salpêtrière, 47-83, bd de l'Hôpital, 75651 Paris.
Le Guyader
A
A
Leprince
P
P
Bonnet
N
N
Rama
A
A
Vaissier
E
E
Gandjbakhch
E
E
Gandjbakhch
I
I
D001021:Aortic Valve; D004867:Equipment Design; D005500:Follow-Up Studies; D006350:Heart Valve Prosthesis; D019918:Heart Valve Prosthesis Implantation / Q000401:mortality; D006470:Hemorrhage / Q000453:epidemiology; D006801:Humans; D007431:Intraoperative Complications / Q000453:epidemiology; D008875:Middle Aged; D008943:Mitral Valve; D012086:Reoperation; D012189:Retrospective Studies; D016019:Survival Analysis; D013997:Time Factors; D016896:Treatment Outcome