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| Predictive value of transabdominal,transvaginal and perineal ultrasound for preterm delivery |
| LI Ling-zhi |
| The Fourth People′s Hospital in Nanhai District of Foshan City,Guangdong Province,Foshan 528211,China |
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Abstract ObjectiveTo investigate the predictive value of transabdominal,transvaginal and transperineal ultrasound for preterm delivery.MethodsA total of 120 pregnant women with symptoms of threatened preterm birth who were treated in our hospital from December 2015 to March 2017 were selected as subjects and divided into transvaginal ultrasound group,transabdominal ultrasound group and perineal ultrasound group by random number table method,40 cases in each group.The cervical length (CL)of three groups of pregnant women was measured and the relationship between CL and premature delivery was analyzed.ResultsThe CL of 3.0 cm was the boundary,the incidences of preterm birth of pregnant women CL＜3.0 cm of three groups were significantly higher than full-term,and the differences were statistically significant(P＜0.05).The fulfillment ratio of CL determination in the perineal ultrasound group was significantly higher than that in the transvaginal ultrasound group and transabdominal ultrasound group,the fulfillment ratio of CL determination in the transvaginal ultrasound group was significantly higher than that in the transabdominal ultrasound group,and the differences were statistically significant(P＜0.05).The sensitivity of CL determination in the transvaginal ultrasound group and perineal ultrasound group were significantly higher than that in the transabdominal ultrasound group,and the differences were statistically significant (P＜0.05).The specificity and positive rate of CL determination in transvaginal ultrasound group were significantly higher than those in the transabdominal ultrasound group and perineal ultrasound group,and the differences were statistically significant(P＜0.05).ConclusionThe transabdominal,transvaginal and transperineal ultrasound to determine the CL can effectively predict preterm birth.The sensitivity,specificity and positive rate of transvaginal measurement of CL is higher,worth in the clinical promotion.
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