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Effect of first trimester crown rump length measurement on rates of induction of labour for postdates.

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN16877725
Enrollment
800
Registered
2004-01-23
Start date
1999-02-01
Completion date
Unknown
Last updated
2015-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Pregnancy and childbirth: Childbirth Pregnancy and Childbirth Childbirth

Interventions

The control group will continue with routine antenatal care with ultrasound performed for the usual indications. The intervention group will have an ultrasound scan between 8 and 12 weeks gestation t

Sponsors

NHS R&D Regional Programme Register - Department of Health (UK)
Lead Sponsor

Eligibility

Sex/Gender
Female

Inclusion criteria

Inclusion criteria: Women in the first trimester of pregnancy who do not require a first trimester ultrasound for any other clinical indication.

Exclusion criteria

Exclusion criteria: Women will be excluded if there is a clinical indication for a first trimester ultrasound scan or if they refuse consent. Examples of the former would be if there was vaginal bleeding, uncertainty about viability of the pregnancy or the possibility of an ectopic pregnancy.

Design outcomes

Primary

MeasureTime frame
Rates of induction of labour for postdates

Secondary

MeasureTime frame
1. The characteristics of labour with respect to the length of labour, the mode of delivery, the immediate perinatal outcome, analgesic requirements for labour and the overall client satisfaction with labour 2. Rates of gestation dependent events in pregnancy - false positive and negative outcomes from maternal serum screening 3. The management of early pregnancy complications

Countries

United Kingdom

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026