The association of short cervical length after successfully inhibiting preterm labor with recurrent preterm labor and preterm delivery
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Abstract
To study the association of cervical length after successfully inhibiting preterm labor with recurrent preterm labor and preterm delivery by measuring the transvaginal ultrasound after successful suppression of preterm labor for at least 24 hours. The patients were classified into two groups, those with cervical length < 25 mm (short cervix) and those with cervical length 25 mm (normal cervix). One hundred and fifteen women with threatened preterm labor or preterm labor were included, of which 33 participants (28.70%) had a short cervical length and 82 participants (71.30%) had a normal cervical length. Baseline characteristics were not different in the two groups except the maternal age. The mean gestational age at the time of participation in both groups were not significantly different. The mean gestational age at delivery was 262.76 ± 11.20 days in the short cervical length group and 267.17 ± 8.67 days in the normal cervical length group (P = 0.022). After following the pregnancy showed recurrent preterm labor in short and normal cervical groups equal to 36.36% and 18.29% (P = 0.039) and preterm delivery were 33.33 and 10.98% (P = 0.004) respectively. The calculated risk ratio stands at 3.03. In conclusion, the cervical length in pregnant women after successfully inhibiting preterm labor that less than 25 mm was associated with recurrent preterm labor and preterm delivery. The probability of experiencing preterm birth was 3 times higher in the short cervical length group compared with the normal cervical length group.
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