Comparative analysis of tilting disc and ball valve prosthesis in aortic position.
In a retrospective analysis, comparison was made between the Cutter-Smeloff ball valve (n = 63) and the Lillehei-Kaster tilting disc valve (n = 256) in the aortic position. No significant intergroup difference was found as regards rate of thromboembolism (0.6/100 patient years for both valve types), endocarditis (0.2 for Cutter-Smeloff and 0.5 for Lillehei-Kaster/100 patient years) and paraprosthetic leak (0.9 and 0.5, respectively/100 patient years). The actuarial curve of cumulative survival was similar for both valves until 6 years postoperatively. Thereafter the outcome was less favourable for the patients with Cutter-Smeloff valve (actuarial survival 79 +/- 5% than for those with Lillehei-Kaster valve (91.2 +/- 2%). The reason for this, statistically significant, difference may be associated with the difference in valve profiles.
Mattila
S
S
Harjula
A
A
Mattila
I
I
Mattila
P
P
Skyttä
J
J
D000206:Actuarial Analysis; D000328:Adult; D000368:Aged; D001021:Aortic Valve; D004697:Endocarditis, Bacterial / Q000453:epidemiology; D005260:Female; D005500:Follow-Up Studies; D006350:Heart Valve Prosthesis / Q000401:mortality; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000453:epidemiology*; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012189:Retrospective Studies; D013923:Thromboembolism / Q000453:epidemiology; D013997:Time Factors