采用体外循环行心脏直视手术并发颅内血肿者罕见。文献中曾报告并发急性硬脑膜下血肿、硬脑膜外血肿和脑内血肿。本文系首次报告3例心脏直视术后发生慢性硬脑膜下血肿。例一,女47岁,因二尖瓣狭窄和闭锁不全2年,采用体外循环行直视二尖瓣分离术。术后第四天出现头痛、呕吐,第10天CT扫描见左颞一高密度硬膜下血肿伴中线结构 Cardiopulmonary bypass with open heart surgery complicated by intracranial hematoma are rare. In the literature have been reported concurrent acute subdural hematoma, epidural hematoma and intracerebral hematoma. This article is the first report of 3 cases of chronic dural subdural hematoma after open heart surgery. Case 1, female 47 years old, due to mitral stenosis and atresia for 2 years, the use of cardiopulmonary bypass line mitral valve surgery. Headache and vomiting appeared on the fourth postoperative day. CT scan on the 10th day showed left temporal-high density subdural hematoma with midline structure