The authors report no conflicts of interest.
Main Research Article
Can transabdominal ultrasound identify women at high risk for short cervical length?
Article first published online: 17 APR 2013
© 2013 Nordic Federation of Societies of Obstetrics and Gynecology
Acta Obstetricia et Gynecologica Scandinavica
Volume 92, Issue 6, pages 637–641, June 2013
How to Cite
Can transabdominal ultrasound identify women at high risk for short cervical length? Acta Obstet Gynecol Scand 2013; DOI: 10.1111/aogs.12111, , , , , .
- Issue published online: 16 MAY 2013
- Article first published online: 17 APR 2013
- Manuscript Accepted: 22 JAN 2013
- Manuscript Received: 31 AUG 2012
- Preterm birth prevention;
- cervical length screening;
- transabdominal ultrasound;
- transvaginal ultrasound
To determine whether transabdominal cervical length screening could identify women at high risk for having a short cervix on transvaginal ultrasound.
Retrospective cohort study.
Tertiary referral center.
A total of 703 patients with a singleton pregnancy at 18 to 23+6 weeks of gestation who underwent transabdominal and transvaginal cervical length assessment during anatomy ultrasound at a single institution between January 2007 and October 2011.
Electronic medical records were reviewed to identify women who met the study criteria.
Main outcome measures
The primary outcome was the number of women with a short transabdominal cervical length (defined as ≤30 mm) who needed to undergo transvaginal ultrasound to detect one woman with a short transvaginal cervical length of ≤20 mm.
In all, 703 patients were included in the primary analysis; 3.42 women with transabdominal cervical length ≤30 mm needed to undergo transvaginal ultrasound to detect one woman with transvaginal ultrasound cervical length ≤20 mm. Of women with short transvaginal cervical length ≤20 mm, 89.8% had a transabdominal measurement ≤30 mm and 96.7% had a transabdominal measurement ≤33 mm.
Screening of transabdominal cervical length may represent a useful strategy for detecting women with short cervix on transvaginal ultrasound.