• 1. Centre of Cardiovascular Surgery, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou 510010, P. R. China;
  • 2. Department of Cardiothoracic Surgery, Changhai Hospital, Second Military Medical University, Shanghai 200433, P. R. China;
XUZhi-yun, Email: xuzhiyun@live.cn
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Objective To analyze the reason and prevention of late bioprosthetic heart valve thrombosis (LBVT). Methods Bioprosthetic heart valves were implanted in 580 patients between January 2001 and July 2013 in Changhai Hospital, and only found one case of LBVT (0.2%). Reoperation was performed for a 67-year-old male patient 3 years after bioprosthetic aortic valve replacement due to severe aortic valve stenosis. Retrospectively analyzed the clinical data and reviewed the literature between January 1989 and December 2013 in Pubmed. Results No risk factor for thrombosis was revealed in this patient. Pathology revealed valve thrombosis and collagen and elastic fibers fragmentation and disruption in valve leaflets. In literature review, 20 articles and 47 cases were brought in. The morbidity of LBVT was 0.2%-1.0%. At least 18 patients had high risk factors, and 15 of the 18 patients discontinued anticoagulation after 3 months. However, at least 10 patients had no high risk factors. Forty-four of the 47 patients received stented porcine valve replacement, only one patient received stented bovine pericardial valve replacement. Conclusions LBVT is a rare but serious complication after bioprosthetic valve replacement, the causes of which include the feature of the patients and the bioprosthetic valves. Bovine pericardial valves could be superior to porcine valves in preventing LBVT. Postoperative long-time aspirin therapy is recommended for patients without high risk factors. Patients with any high risk factors should prolong anticoagulation.

Citation: ZHANGBen, WANGYang, LIUXiao-hong, ZHANGXi-wu, GONGDe-jun, TANGHao, XUZhi-yun. Reason Analysis and Prevention of Late Bioprosthetic Heart Valve Thrombosis. Chinese Journal of Clinical Thoracic and Cardiovascular Surgery, 2015, 22(4): 292-297. doi: 10.7507/1007-4848.20150081 Copy

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