Objective To study the correlation between urinary retention and epidural space when postoperative continues epidural analgesia (PCEA) with morphine and bupivacaine.

• 结论吗啡与布比卡因用于胸段和腰段硬膜外腔术后镇痛,效果均满意,但腰段并发尿潴留的发生率明显比胸段高。