Correlation between pregnancy monitoring of cervical length and threatened premature labor

Objective To investigate the correlation between pregnancy monitoring of cervical length and threatened premature labor and the clinical value of predicting premature labor in order to provide reference for future clinical diagnosis and treatment. Methods 177 pregnant women without complications or combinations admitted to our hospital from October 2012 to October 2013 were selected to receive the conventional ultrasound monitoring of cervical length during pregnancy and divided into two groups according to the labor time:the threatened premature labor group( A) with 138 patients and the premature labor group( B) with 39 patients.The correlation between pregnancy monitoring of cervical length and threatened premature labor was analyzed. Results The average cervical length of group A was( 3.29±0.62)cm,which was significantly longer than the( 2.67±0.64)cm of group B(t=3.5083,P=0.0132),with statistically significant difference. The change of cervical length was the main feature of threatened premature labor in pregnant women. With 3.0 cm as the boundary of cervical length, the sensitivity of cervical length in predicting premature labor was 92.31%( 36/39),the specificity was 93.47%( 129/138),the positive predictive value was 80.00%( 36/45),and the negative predictive value was 97.73%( 129/132). Conclusion The change of cervical length is the main feature of threatened premature labor in pregnant women.For pregnant women with cervical length 3.0cm,high attention should be paid to avoid premature labor. For pregnant women with cervical length 3.0cm,medication should be conducted based on the specific clinical manifestations to ensure maternal and child safety.The application of ultrasound monitoring of cervical length can predict premature labor objectively and accurately,thus is a safe, effective and reliable monitoring method and worthy of wide application and promotion in clinical practice.