采用乙醚气泡试验(醚泡试验)测定单水标本143例,其中正常妊娠121例,高危妊娠22例,与L/S比值对照者113例,结果表明正常妊娠两种试验的准确率均为100％。在高危妊娠中醚泡试验无假阳性,但有2例假阴性,L/S比值即有假阳性也有假阴性。在发生RDS的7例中,醚泡试验均为不成熟值,而L/S比值有1例为成熟值,表明此试验是较好的肺成熟度判定指标。在预测RDS方面较L/S此值更为准确。 One hundred and seventy-three samples were tested by ether bubble test (ether bubble test), of which 121 were normal pregnancy, 22 were high-risk pregnancies and 113 were compared with L / S ratio. The results showed that the accuracy of both tests were 100 %. In the high-risk pregnancy ether bubble test no false positive, but there are 2 cases of false negative, L / S ratio that is false positive and false negative. In 7 cases of RDS, ether bubble test were immature value, and L / S ratio of 1 case was mature value, indicating that this test is a good indicator of lung maturity. This value is more accurate than L / S in predicting RDS.