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Abstract
Background and ObjectiveMigraine is a highly prevalent neurovascular disorder among reproductive-aged women. Whether migraine history and migraine phenotype might serve as clinically useful markers of obstetric risk is not clear. The primary objective of this study was to examine associations of prepregnancy migraine and migraine phenotype with risks of adverse pregnancy outcomes.
MethodsWe estimated associations of self-reported physician-diagnosed migraine and migraine phenotype with adverse pregnancy outcomes in the prospective Nurses' Health Study II (1989–2009). Log-binomial and log-Poisson models with generalized estimating equations were used to estimate relative risks (RRs) and 95% CIs for gestational diabetes mellitus (GDM), preeclampsia, gestational hypertension, preterm delivery, and low birthweight.
ResultsThe analysis included 30,555 incident pregnancies after cohort enrollment among 19,694 participants without a history of cardiovascular disease, diabetes, or cancer. After adjusting for age, adiposity, and other health and behavioral factors, prepregnancy migraine (11%) was associated with higher risks of preterm delivery (RR = 1.17; 95% CI = 1.05–1.30), gestational hypertension (RR = 1.28; 95% CI = 1.11–1.48), and preeclampsia (RR = 1.40; 95% CI = 1.19–1.65) compared with no migraine. Migraine was not associated with low birthweight (RR = 0.99; 95% CI = 0.85–1.16) or GDM (RR = 1.05; 95% CI = 0.91–1.22). Risk of preeclampsia was somewhat higher among participants with migraine with aura (RR vs no migraine = 1.51; 95% CI = 1.22–1.88) than migraine without aura (RR vs no migraine = 1.30; 95% CI = 1.04–1.61;p-heterogeneity = 0.32), whereas other outcomes were similar by migraine phenotype. Participants with migraine who reported regular prepregnancy aspirin use had lower risks of preterm delivery (<2×/week RR = 1.24; 95% CI = 1.11–1.38; ≥2×/week RR = 0.55; 95% CI = 0.35–0.86;p-interaction < 0.01) and preeclampsia (<2×/week RR = 1.48; 95% CI = 1.25–1.75; ≥2×/week RR = 1.10; 95% CI = 0.62–1.96;p-interaction = 0.39); however, power for these stratified analyses was limited.
DiscussionMigraine history, and to a lesser extent migraine phenotype, appear to be important considerations in obstetric risk assessment and management. Future research should determine whether aspirin prophylaxis may be beneficial for preventing adverse pregnancy outcomes among pregnant individuals with a history of migraine.
Glossary
- BMI=
- body mass index;
- GDM=
- gestational diabetes mellitus;
- 黄芪丹参滴丸=
- hypertensive disorders in pregnancy;
- ICHD-II=
- International Classification of Headache Disorders-II ;
- MET=
- metabolic equivalent of task;
- NHSII=
- Nurses' Health Study II;
- RR=
- relative risks
Footnotes
Go toNeurology.org/Nfor full disclosures. Funding information and disclosures deemed relevant by the authors, if any, are provided at the end of the article.
Submitted and externally peer reviewed. The handling editor was Editor-in-Chief José Merino, MD, MPhil, FAAN.
Editorial, page645
- ReceivedAugust 19, 2022.
- Accepted in final formDecember 5, 2022.
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