[Acceleration of aortic regurgitation due to localized aortic dissection; report of a case].

We successfully treated a patient with accelerated aortic regurgitation due to localized aortic dissection with mitral regurgitation causing congestive heart failure. A 58-year-old female, who had suffered from aortic regurgitation for more than 10 years, had acute heart failure due to acceleration of aortic regurgitation. The surgical findings showed prolapse of the aortic valve due to localized dissection in the sinus of Valsalva. We performed a Bentall operation and a mitral valve replacement, with a favorable outcome. The postoperative course was uneventful.