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KENJI YAMAZAKI
Department School of Medicine(Tokyo Women's Medical University Hospital), School of Medicine Position Visiting Professor |
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| Article types | Original article |
| Language | English |
| Peer review | Peer reviewed |
| Title | Twenty-year experience with the Konno operation: Konno incision does not impair LV function. |
| Journal | Formal name：General thoracic and cardiovascular surgery Abbreviation：Gen Thorac Cardiovasc Surg ISSN code：18636705/18636713 |
| Domestic / Foregin | Domestic |
| Publisher | Springer Nature |
| Volume, Issue, Page | 66(5),pp.270-275 |
| Author and coauthor | MATSUZAKI Yuichi†*, HIRAMATSU Takeshi, SAKAMOTO Takahiko, NAGASHIMA Mitsugi, NIINAMI Hiroshi, YAMAZAKI Kenji |
| Publication date | 2018/05 |
| Summary | 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. |
| DOI | 10.1007/s11748-018-0896-z |
| PMID | 29396657 |