Abstract
Objective To investigate the relationship between the cervical canal length shortening rate and preterm delivery by perineal ultrasound dynamic monitoring.Methods Two hundred and ninety-eight cases of preterm symptoms primipara were selected,transperineal measuring cervical canal length every day to calculate the length of the cervical canal shortening rate.And then observe the preterm birth rate of the cervical canal length shortening rate ≤ 15％ group,16％-30％ group,31％-60％ group,＞ 60％ group at the first week,second week and third week respectively.And calculate the total of preterm birth rate of the three weeks.Results When the cervical length shortening rate ≤15％,premature birth was highly unlikely.With the cervical canal shortening rate increased,the preterm birth rate also increased significantly,when the cervical canal length shortening rate of 16％-30％ and 31％-60％ group,the preterm birth rate were 3.4％ and 7.9％,the difference of preterm birth rate was statistically significant(P ＜ 0.05) between the two groups.When the cervical length shortening rate ＞ 60％,premature birth rate was 48％.The differences were statistically significant compared with other groups(P ＜0.01).Cervical canal length shortening rate was the greater,the higher the preterm birth rate.Conclusions The cervical canal length shortening rate can be used as a predictor of preterm birth,the shortening rate is proportional to the preterm birth rate. Key words: Threatened premature labor; Perineal ultrasound; Cervical canal length shortening rate; Preterm birth
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call