広仲 英治¹, 中山 淳¹, 本郷 実², 田中 正雄², 滝沢 洋子¹, 浅和 照子¹, 東本 恭子¹, 藤田 千佳代¹, 大久保 信一², 勝山 努¹, 関口 守衛²

Eiji HIRONAKA¹, Jun NAKAYAMA¹, Minoru HONGO², Masao TANAKA², Yoko TAKIZAWA¹, Teruko ASAWA¹, Yasuko HIGASHIMOTO¹, Chikayo FUJITA¹, Shinichi OKUBO², Tsutomu KATSUYAMA¹, Morie SEKIGUCHI²

¹信州大学医学部附属病院中央検査部, ²信州大学医学部附属病院第1内科

¹Central Clinical Laboratorries, Shinshu University Hospital, ²The First Department of Internal Medicine, Shinshu University Hospital

キーワード : Aortic regurgitation, Aortic stenosis, Diastolic mitral regurgitation , Volume loading of left ventricle

Two patients (56 and 72 years old) with chronic aortic stenoregurgitation presented with diastolic mitral regurgitation (MR). Pulsed Doppler echocardiography indicated an abnormal retrograde flow during mid-to late-diastole. Increased peak velocity without shortened deceleration in the rapid filling wave, and decreased peak velocity at atrial contraction in the left ventricular (LV) inflow were also present. Two-dimensional and M-mode echo-cardiographic examinations revealed dilatation, wall thickening and normal contraction of the LV. It is wellknown that diastolic MR often occurs in cases of acute aortic regurgitation (AR), but not in chronic AR. We think it worth reporting that our cases showed diastolic MR in spite of the presence of chronic AR.