Surgical Removal of Left Ventricular Ball-Like Thrombus

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  • 左室内ｂａｌｌ‐ｌｉｋｅ　ｔｈｒｏｍｂｕｓに対する手術例の検討

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Left ventricular (LV) thrombus is an uncommon primary disease, but following acute myocardial infarction (AMI) it is a common complication associated with a risk of systemic embolism. Especially if the thrombus is ball-shaped, there is a higher risk of systemic embolism. We reviewed 4 cases of thrombectomy including 1 with the acute phase of AMI and another with Takotsubo disease. Between January 2000 and August 2005, 4 consecutive patients underwent thrombectomy for ball-like thrombus in the left ventricle (all men, mean age 53.5 years). We performed thrombectomy through left ventriculotomy. In 3 patients ventriculotomy was repaired with direct closure with double PTFE felt reinforcement, and in the other large acute AMI with the infarction exclusion technique (Komeda-David) because the LV wall was remarkably fragile. All thrombi were ball-like and fresh (mean size 15.8mm). Concomitant coronary artery bypass grafting was performed in 3 cases, the Maze procedure in 2, and mitral annuloplasty (MAP) in 1. All patients survived and have been doing well without any major complications. Surgical thrombectomy is safe and can improve prognosis without systemic embolism. In the acute phase of AMI, the infarction exclusion technique is excellent to prevent bleeding and postoperative remodeling of the left ventricular wall.

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