超声检查对液气胸的诊断价值

目的 探讨超声检查在液气胸诊断中的可行性.方法 对213例临床待排除气胸且已经或行将实施胸部CT扫描者行同期(3h)双盲胸部X线摄片和超声检查,以CT结果作对照标准,对超声、X线胸片的检查结果行前瞻性比较.结果 超声、X线片诊断液气胸的特异性、阳性预测值均为100%,敏感性、阴性预测、准确性则分别为96.7%、73.3%、99.8%与98.0%、99.8与98.1%(P<0.05).超声与CT诊断气胸的一致性好于X线片(McNemar检验,P<0.025).结论 超声作为诊断液气胸的手段可弥补X线之不足.

The value of ultrasonography in diagnosis of hydropneumothorax

Objective To investigate the value of ultrasound diagnosing for hydropneumothorax. Methods In a prospective double-blind randomized concurrent controlled trial. 213 patients doubted pneumotborax were exam-ined with CT, senography and conventional radiography. Results In 213 cases, hydropneumothorax diagnosed in 30 hemithoraces of 30 patients by CT,29 hemitboraces by ultrasound and 22 hemithoraces by X-ray. The sensitivity, nega-tive predictive value,accuracy by ultrasound and X-ray were 96.7% vs 73.3% ,99.8% vs 98.0% ,99.8 vs 98.1% respectively(P<0.05), the specificity and positive predictive value of both ultrasound and X-ray were 100%. Ultra-sound surpassed the X-ray in detecting pneumothorax ( McNemar test P<0.025 ). Conclusion If ultrasound is served to detect pneumothorax, it can make up the defects of the methods commonly used cuxrently.