Pregnancy outcome after cervical conisation: a retrospective cohort study in the Leuven University Hospital
Article first published online: 26 NOV 2009
© 2009 The Authors Journal compilation © RCOG 2009 BJOG An International Journal of Obstetrics and Gynaecology
BJOG: An International Journal of Obstetrics & Gynaecology
Volume 117, Issue 3, pages 268–273, February 2010
How to Cite
van de Vijver, A., Poppe, W., Verguts, J. and Arbyn, M. (2010), Pregnancy outcome after cervical conisation: a retrospective cohort study in the Leuven University Hospital. BJOG: An International Journal of Obstetrics & Gynaecology, 117: 268–273. doi: 10.1111/j.1471-0528.2009.02437.x
- Issue published online: 12 JAN 2010
- Article first published online: 26 NOV 2009
- Accepted 6 October 2009. Published Online 26 November 2009.
- Cervical intraepithelial neoplasia;
Please cite this paper as: van de Vijver A, Poppe W, Verguts J, Arbyn M. Pregnancy outcome after cervical conisation: a retrospective cohort study in the Leuven University Hospital. BJOG 2010;117:268–273.
Objective To assess pregnancy outcome after conisation.
Design Retrospective cohort study.
Setting Belgium, data from a university hospital.
Population Fifty-five pregnancies in 34 women after conisation, and 55 pregnancies in 54 women without a history of conisation or cervical intraepithelial neoplasia (CIN).
Methods Hospital data were reviewed and questionnaires were collected from 599 women who had a conisation in a 5-year period, among whom subsequent pregnancies were identified. The control group consisted of matched pregnancies of women without a history of conisation.
Main outcome measures Gestational age at delivery, neonatal biometry, neonatal condition at birth.
Results Numbers of sexual partners (4.6 ± 3.4 SD versus 2.5 ± 2.5 SD) and ex-smokers were significantly higher in the study group compared with the control group. Gestational age at delivery (266 ± 2 days versus 274 ± 9 days), neonatal head circumference (33.9 ± 2.5 cm, versus 34.6 ± 2.5 cm) and birthweight (3088 ± 754 g versus 3381 ± 430 g) were significantly lower in the study group compared with the control group. Numbers of preterm [<37 weeks; 14/55 (25%) versus 2/55 (4%); P = 0.002] and severe preterm (<34 weeks; 6/55 (11%) versus 0/55 (0%); P = 0.031] deliveries in the study group were significantly higher. There were no cases of perinatal mortality.
Conclusions Conisation affects obstetrical outcome after conisation for CIN. Babies tend to be born earlier and are smaller. It is not clear whether this is related to the procedure or to factors linked with CIN.