title: Thromboembolic complications with the cloth-covered Starr-Edwards aortic prosthesis in patients not receiving anticoagulants.
abstract: A comparison of the incidence of thromboembolic (TE) episodes was made in three groups of patient who underwent aortic valve replacement with the cloth-covered Starr-Edwards prostheses. Group 1 consisted of patients who received anticoagulants for either the entire period of follow-up or for a period of variable duration, after which these agents were no longer administered. When anticoagulants were stopped, 22 patients were categorized as Group 3 for study. Group 2 comprised patients who never received anticoagulants. Of the 147 patients followed in Group 1, 14 suffered one episode of TE. Six patients experienced major emboli; 3 of them died. Twenty of the 82 patients followed in Group 2 (no anticoagulants) suffered TE complications. There were 10 episodes of major emboli. Five of the 22 patients in Group 3 suffered an episode (all major) of TE. It is concluded from this study that anticoagulants should be given permanently to all patients with cloth-covered Starr-Edwards prostheses. Indeed, there is no period after operation when the incidence of TE is so low that anticoagulation may be safely discontinued.
mesh_terms: D000074:Acenocoumarol / Q000627:therapeutic use; D001021:Aortic Valve / Q000601:surgery*; D006350:Heart Valve Prosthesis / Q000009:adverse effects*; D006801:Humans; D013923:Thromboembolism / Q000209:etiology* / Q000517:prevention & control; D013997:Time Factors; D014859:Warfarin / Q000627:therapeutic use
chemical_list: D014859:Warfarin; D000074:Acenocoumarol