腰穿及头颅CT在诊断原发性蛛网膜下腔出血中的作用

目的：了解腰穿及头颅CT在诊断原发性蛛网膜上腔出血中的作用，方法：分析62例初诊为原发性蛛网膜下腔出血（其中60例为原发性蛛网膜下腔出血，1例为误诊为原发性蛛网膜下腔出血的脑叶出血，1例为误诊为原发性蛛网膜下腔出血的Jackson癫痫）的临床,要穿及CT检查，结果：原发性蛛网膜下腔出血CSF异常在发病后10天内的阳性率为100％，11－15天为89％，21－30天为45％，CT检查的阳性率，发病48h内为100％，3－5天内的为80％，5天以后的阳性率很低，结论：腰穿与CT检查对诊断原发性蛛网膜下腔出血各有利弊，两者结合可提高诊断的正确性和减少误诊。

Use of the lumbar puncture and CT in diagnosis of primary SAH

Objective: To investgate the use of the lumber puncture and CT in diagnosis of primary SAH. Methods: Clincal data and lumbar puncture and CT of 60 patients with primary SAH, 1 patient with cerebral lobar hemorrhage and 1 patient with Jackson,s epilepsis were analysed. Both cases were wrong erraneously diagnosed as primary SAH. Results:The postive rate of CSF is 100% in 10 days,89% in 11 to 15 days , 45% in 21 to 30 days after coming on of primary SAH.The positive rate of CT is 100% in 48 hours ,80% in 3 to 5 days and is very lower after 5 days coming on of primary SAH. Conclusion: Either lumbar puncture or CT has advantage and deficiency in diagnosis of primary SAH. The combination of lumbar puncture and CT can increase correctness and decrease wrong diagnosis.