Perivalvular Leakage after Aortic Valve Replacement with a FreestyleTM Stentless Valve

(Department of Cardiovascular Surgery, Ishinkai Yao General Hospital, Osaka, Japan)

Tatsuya Kiji Akimitsu Yamaguchi Hiroshi Kumano
A 67-year-old man with aortic insufficiency underwent aortic valve replacement (AVR) with a FreestyleTM valve (Medtronic Inc.), using the complete subcoronary technique. Although a trivial aortic insufficiency remained on postoperative echocardiography, he continued without chest symptoms. A cardiac murmur developed and dyspnea on effort appeared five months postoperatively. Echocardiography and aortography showed severe aortic insufficiency, and a re-do AVR was performed seven months after the first procedure. Examination of the Freestyle valve revealed that two loops of the suture line on the inflow side of the valve had become detached from the muscular tissue. It is most important to keep the geometry of the Freestyle valve at the time of the implantation using the subcoronary technique, and an unsuitable implantation can cause consequent perivalvular leakage.
@Jpn. J. Cardiovasc. Surg. 30: 308-310 (2001)