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Change in cervical length in cases resulting in threatened preterm labor. | LitMetric

AI Article Synopsis

Article Abstract

Purpose: To determine the predisposing changes in cervical length (CL) and the critical range of CL in which significant uterine contractions emerge resulting in threatened preterm labor (TPL).

Methods: Sixty-eight uncomplicated singleton pregnancies where the CL was <25 mm before 31 weeks were divided into cases with TPL (n = 23) or without (n = 45). CL and uterine contractions were monitored sequentially starting between 16 and 20 weeks. The gestational ages when a CL of <25 or <15 mm was first observed, the interval between these two measurements, and the CL value at TPL diagnosis were analyzed retrospectively.

Results: (1) The gestational ages when a CL of <25 and <15 mm was first detected were lower in the TPL group (25 (median); 18-30 (range) and 28; 25-33 weeks, respectively) than in the non-TPL group (27; 20-30 and 33; 26-35 weeks; P = 0.030 and P < 0.001). (2) The interval between the two measurements was shorter in the TPL group (2.5; 0-15 weeks) than in the non-TPL group (5.5; 0-13 weeks, P = 0.034). (3) The CL value at TPL diagnosis was 13 mm (median), ranging from 7 to 18 mm.

Conclusion: Cases with early onset and subsequent rapid CL shortening before 31 weeks resulted in TPL when CL decreased below the range 7-18 mm.

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Source
http://dx.doi.org/10.1007/s10396-010-0279-2DOI Listing

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