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Preterm birth contributes to over one-third of infant deaths, and although there are several risk factors for preterm birth few tests predict this obstetric complication. Midtrimester transvaginal cervical length (TVCL) screening is currently the best clinical predictor of spontaneous preterm birth and has been suggested to be applied universally. Although several studies have examined the cost-efficacy of universal screening, the time consumption and resultant time management has not been examined. We aim to quantitate the time requirement for transvaginal cervical length (TVCL) screening with the implementation of universal TVCL screening. Study design:  This is a retrospective cohort study of women undergoing cervical length screening after implementation of universal Transvaginal Cervical Length (TVCL) screening at a university setting over a 1-year period. The primary outcome was time in minutes for TVCL screening from completion of transabdominal to completion of transvaginal ultrasound. This study included 2803 ultrasounds, 1673 of which involved completion of a TVCL after completion of abdominal imaging between 16 0/7 and 23 6/7 weeks of gestation. The mean duration of cervical length screening was 9.8 min (standard deviation [SD], 4.0 min). The time range was less than 1 min to 48 min. For women obtaining cervical lengths, 4.2% required less than 5 additional minutes to perform cervical length screening, 52.1% (872), required less than 10 additional minutes. The majority, 91.8%, of ultrasounds required less than 15 min to complete. Ultrasounds performed in private practice sites required less time compared to those at teaching sites (8.2 ± 3.1 min versus 10.2 ± 4.1 min,  p  &lt; .001). No significant time improvement occurred after 6 months of universal TVCL screening, with the first 6 months average of 10.1 min versus 9.6 min in the later half,  p  = .61. Implementation of a universal TVCL program adds an average of 10 min to each ultrasound exam. This additional time does diminish with increasing experience with TVCL, but not to a significant degree.

Time required to complete transvaginal cervical length in women receiving universal cervical length screening for preterm birth prevention