Yuichi Matsuzaki1, Takeshi Hiramatsu2, Takahiko Sakamoto2, Mitsugi Nagashima2, Hiroshi Niinami2, Kenji Yamazaki2. 1. Department of Cardiovascular Surgery, The Heart Institute of Japan, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjyuku-ku, Tokyo, 162-8666, Japan. bokumatsuzaki@hotmail.co.jp. 2. Department of Cardiovascular Surgery, The Heart Institute of Japan, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjyuku-ku, Tokyo, 162-8666, Japan.
Abstract
BACKGROUND: There has been no report observing the LV function of Konno incision. We examined the outcomes of the Konno operations over 20 years. METHODS: We investigated 63 Konno operations with mechanical valves performed from 1984. This study aimed to evaluate the effects of Konno incision including LV function changes and the long-term outcomes of patient survival and reoperation rate (RVOT and LVOT complications). RESULTS: The postoperative follow-up period was 20.6 ± 6.2 years. Early death occurred in 1 case and late death occurred in 9 cases. The cumulative survival rate was 89.6, 87.5, and 84.5% in the 5th, 10th, and 20th follow-up years. Five patients required reoperation for the aortic valve. The recurrence avoidance rate for LVOT reoperation was 96.6, 94.7, and 92% in the 5th, 10th, and 20th follow-up years of the Konno operation. Konno incision did not show significant decline in postoperative LV ejection fraction. (Pre, 62% vs 20 years later, 58%; P = 0.052.) There were no cases requiring intervention at the event of ventricular arrhythmia, but 13 cases were Complete Right bundle branch block, and 11 cases were Left bundle branch block. CONCLUSIONS: The survival rate associated with Konno operation throughout 20 years was excellent. Konno incision can secure sufficient LV outflow tract and is a safe treatment for complex LVOTO without deteriorating LV ejection fraction.
BACKGROUND: There has been no report observing the LV function of Konno incision. We examined the outcomes of the Konno operations over 20 years. METHODS: We investigated 63 Konno operations with mechanical valves performed from 1984. This study aimed to evaluate the effects of Konno incision including LV function changes and the long-term outcomes of patient survival and reoperation rate (RVOT and LVOT complications). RESULTS: The postoperative follow-up period was 20.6 ± 6.2 years. Early death occurred in 1 case and late death occurred in 9 cases. The cumulative survival rate was 89.6, 87.5, and 84.5% in the 5th, 10th, and 20th follow-up years. Five patients required reoperation for the aortic valve. The recurrence avoidance rate for LVOT reoperation was 96.6, 94.7, and 92% in the 5th, 10th, and 20th follow-up years of the Konno operation. Konno incision did not show significant decline in postoperative LV ejection fraction. (Pre, 62% vs 20 years later, 58%; P = 0.052.) There were no cases requiring intervention at the event of ventricular arrhythmia, but 13 cases were Complete Right bundle branch block, and 11 cases were Left bundle branch block. CONCLUSIONS: The survival rate associated with Konno operation throughout 20 years was excellent. Konno incision can secure sufficient LV outflow tract and is a safe treatment for complex LVOTO without deteriorating LV ejection fraction.
Authors: T E David; A Omran; J Ivanov; S Armstrong; M P de Sa; B Sonnenberg; G Webb Journal: J Thorac Cardiovasc Surg Date: 2000-02 Impact factor: 5.209
Authors: Johanna J M Takkenberg; Arie Pieter Kappetein; Lex A van Herwerden; Maarten Witsenburg; Lenny Van Osch-Gevers; Ad J J C Bogers Journal: Ann Thorac Surg Date: 2005-11 Impact factor: 4.330