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Ann Thorac Surg 1999;67:478-483
© 1999 The Society of Thoracic Surgeons
a Cardiovascular Surgery, Kumamoto Central Hospital, Kumamoto, Japan
b Anesthesiology, Kumamoto Central Hospital, Kumamoto, Japan
Accepted for publication July 24, 1998.
Address reprint requests to Dr Sakata, 96 Tainoshima, Tamukaemachi, Kumamotoshi, Japan, 862-0965
Background. To further gain insight into atheroembolization mechanisms epiaortic two-dimensional echocardiographic evaluation before extracorporeal circulation and after decannulation may be helpful.
Methods. Epiaortic two-dimensional echocardiography was performed before cannulation and after decannulation in 188 (124 men) patients (mean age, 67.7 years; range, 43 to 86 years) undergoing operation with extracorporeal circulation for ischemic heart disease during 1996.
Results. After decannulation, a new intimal lesion was recognized in 10 of 188 patients (5.3%): mobile type in 5 patients (3 ending with a stroke [60%], 2 having brain computed tomographic scans compatible with embolism), intimal tear in 2, and intimal irregularity in 3 patients. Stroke occurred in a significantly smaller number of patients (2 of 178 [1.1%]; p < 0.001) without new lesions.
Conclusions. Clamp- or cannula-induced new lesions, especially of mobile type, are often complicated by postoperative stroke. Aggressive surgical technique modifications may need to be considered to avoid creating new lesions, particularly of the mobile type.
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Ann. Thorac. Surg. 1999 67: 483.
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