例1.23岁,住院号1334,初产妇,于1987年12月6日入院。诊断为:孕40~(±5)周,胎膜早破,轻度妊高征。体检:一般情况好,Bp17.3/12kPa,胎方位 LOA,胎心音正常。因胎膜早破及原发性富缩乏力于入院的次日在连续硬膜外麻醉下行子宫下段剖宫产术。取腰椎1～2间隙穿刺顺利,无脑脊液外流,在放置硬膜外导管翻身平卧后,患者诉头晕、耳鸣,当时未引起注意。整个 Case 1.23 years old, hospital number 1334, primipara, was admitted on December 6, 1987. Diagnosis: pregnancy 40 ~ (± 5) weeks, premature rupture of membranes, mild pregnancy-induced hypertension. Physical examination: the general situation is good, Bp17.3 / 12kPa, fetal position LOA, fetal heart sound normal. Due to premature rupture of membranes and primary fatigue and weakness in the hospital the next day after continuous epidural anesthesia underwent uterine cesarean section. Take 1 to 2 lumbar puncture smooth, no cerebrospinal fluid efflux, after placing the epidural catheter over the supine, the patient complained of dizziness, tinnitus, did not pay attention. entire