ENGLISH ABSTRACT
JOURNAL ARTICLE
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[Results of heart valve replacement: especially on the selection criteria for valve prostheses and on a new anticoagulation regimen].

Since March 1981 till the end of 1987, a total of 76 artificial heart valves were implanted in 72 patients. Heart valve prostheses were selected individually according to the patient's needs rather than assigning a single model to every patient. Postoperatively patients were placed on an anticoagulation therapy regimen consisting of reduced-dose warfarin (prothrombin time maintained at 30% of the control) and a small dose (81 mg/day) aspirin. During this period no bioprosthesis was implanted. For aortic valves, Starr-Edwards caged-ball valves were used in 53.1% and St. Jude Medical (SJM) valves in 37.5%. For mitral valves, SJM valves were used in 68%. No mechanical valve failure and no thrombosed valve was encountered. There was one patient-prosthesis missmatch. The incidence of thromboembolism for the entire series was 5/181.2 patient-years. There was 1-2/181.2 patient-years incidence of hemorrhagic complications. These figures were comparable to the ones with conventional warfarin therapy. No intracranial hemorrhage was encountered. Our selection criteria for artificial heart valves and our method of anticoagulation were discussed in detail. We conclude that at present there is no single prosthesis which satisfies all the varying needs of every patient, and the prosthesis which is best suited to that particular patient should be selected. We are generally happy with our current method of postoperative anticoagulation and will continue with this regimen.

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