摘要
目的以CT为标准比较床旁超声、仰卧位X线胸片对气胸的诊断价值。方法46例钝性胸外伤患者均作了床旁超声、仰卧位X线胸片检查,并对结果和CT片进行比较。结果31/46例(34侧)患者CT检查发现气胸,其中28例(30侧)超声检查也发现,10例在仰卧位X线胸片发现,2侧超声结果假阳性患者CT检查证实为肺大泡。超声检查对气胸的敏感性88.2%(30/34侧),特异性96.6%(56/58侧),阳性预测值93.8%(30/32侧),阴性预测值93.3%(56/60侧);而仰卧位胸片的敏感性35.3%(12/34侧),特异性100%(58/58侧),阳性预测值100%(12/12侧),阴性预测值72.5%(58/80侧)。结论本研究结果表明,床旁超声检查对外伤性气胸的诊断敏感性、准确度比仰卧位X线胸片好,和CT检查结果相似。
Objective To compare the accuracy of bedside ultrasonography （US） with that of Supine chest X ray in the detection of traumatic pneumothoraces , taking computed tomography （CT） as the reference standard. Methods Thoracic US, supine chest X ray and CT were performed to detect pneumothorax in 46 patients who sustained blunt thoracic trauma. US and supine chest X ray findings were compared with CT findings which wei：e used as the reference standard for pneumothorax detection. Results 31 of 46 patients had pneumothorax at CT .All 31 of these pneumothoraces were detected＇at US , and 16 were seen at supine chest X ray . In the two false -positive US cases, the patients were proven to have substantial bullous emphysema at CT. Sensitivity of US was 88.2% （30 of 34 patients）, the specificity was 96.6% （56 of 58 patients）, the positive predictive value was 93.8% （30 of 32 patients）, the negative predictive value was 93.3% （56 of 60 patients） .The supine chest X ray had a 35.3% （12 of 34 patients）of sensitivity, a 100% （58 of 58 patients） of specificity, a 100% （ 12 of 12 patients） of positive predictive value, and a 72.5 % （58 of 80 patients） of negative predictive value. Conclusions In this study , US was more sensitive than supine chest X ray and as sensitive as CT in the detection of traumatic pneumothoraces.
出处
《浙江临床医学》
2008年第4期455-456,共2页
Zhejiang Clinical Medical Journal
关键词
气胸
超声
CT
仰卧位胸片
Pneumatothorax
Ultrasonography
Computed tomography （CT）
Supine chest X ray
