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Postterm delivery and risk for epilepsy in childhood
Vera Ehrenstein1, Lars Pedersen, Vibeke Holsteen
1Department of Epidemiology, Boston University School of Public Health, Boston, Massachusetts, USA. verad@bu.edu
Pediatrics
|March 3, 2007
Summary
Prolonged pregnancy increases the risk of early childhood epilepsy. Cesarean or instrument-assisted deliveries further elevate this risk, particularly for postterm births.
Area of Science:
- Neurology
- Obstetrics & Gynecology
- Pediatrics
Background:
- Postterm delivery (gestation ≥42 weeks) is linked to perinatal complications.
- Some complications of postterm delivery may increase the risk of neurologic morbidity in children.
Purpose of the Study:
- To investigate the association between postterm delivery and the risk of developing epilepsy in childhood.
Main Methods:
- A cohort study analyzed singleton births in Danish counties (1980-2001).
- Epilepsy cases were identified by linking birth registry data with hospital records up to 12 years of age.
- Incidence rates and rate ratios were calculated using Poisson regression, adjusting for various factors.
Main Results:
- Birth at ≥42 weeks was associated with a 1.3-fold increased epilepsy risk (≥43 weeks: 2.0-fold) compared to 39-41 weeks, primarily in the first year of life.
- Cesarean or instrument-assisted deliveries for postterm births showed higher epilepsy risk ratios (e.g., 4.9 for ≥43 weeks via C-section).
- No significant association was found between postterm delivery and epilepsy risk after the first year of life.
Conclusions:
- Prolonged gestation is a risk factor for epilepsy developing in early childhood.
- Increased epilepsy risk in instrument-assisted or cesarean deliveries may relate to underlying birth complications.
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