Mitral valve replacement: a comparison of two prostheses.

Abstract

Between November, 1965 and June, 1970, 175 patients underwent mitral valve replacement with the Smeloff-Cutter prosthesis (109 patients) or the toroidal valve (66 patients). The early mortality for patients with a toroidal mitral prosthesis was 18.2 percent (12 patients) and the late mortality 34.8 percent (23 patients). Among patients in whom Smeloff-Cutter mitral valves were inserted, the early mortality was 15.6 percent (17 patients) and the late mortality 23.9 percent (26 patients). During a follow-up period extending at least five years, thromboembolic complications occurred in 25.9 percent (14) of patients with toroidal valves and 7.6 percent (7) of patients with Smeloff-Cutter valves. Reoperation was necessary because of thrombosis of the prosthesis in seven patients with toroidal valves and two patients with Smeloff-Cutter valves. The incidence of endocarditis was the same in both groups. In this study, the Smeloff-Cutter mitral prosthesis proved to be superior to the toroidal valve because of a lower incidence of thromboembolism.

• Authors: J R Rees, G R Holswade, R G Carlson, V A Subramanian, T E Murphy, C W Lillehei
• Journal: Chest (Chest) Vol. 71 Issue 2 Pg. 135-8 (Feb 1977) ISSN: 0012-3692 [Print] United States
• PMID: 832480 (Publication Type: Comparative Study, Journal Article)

Topics

• Adolescent
• Adult
• Aged
• Endocarditis (etiology)
• Female
• Follow-Up Studies
• Heart Valve Prosthesis (adverse effects, mortality)
• Humans
• Male
• Middle Aged
• Mitral Valve (surgery)
• Thromboembolism (etiology)