A prior history of ischemic stroke significantly increased the risk of incident ischemic stroke during pregnancy or the early postpartum period (OR 2.37; 95% CI 1.97-2.87; p<0.0001).
Cohort (n=220,479)
Does a prior history of ischemic stroke increase the risk of incident ischemic stroke during pregnancy or the early postpartum period?
Women with a prior history of ischemic stroke have a more than twofold higher odds of experiencing a recurrent ischemic stroke during pregnancy or the early postpartum period.
Odds Ratio: 2.37 (95% CI 1.97–2.87)
Tasa de eventos absoluta: 34.82% vs 0.34%
valor p: p=<0.0001
Background: The risk of recurrent ischemic stroke during pregnancy or postpartum period in women with a history of ischemic stroke is unclear. Aims: To determine the risk of incident ischemic stroke during pregnancy or early post-partum period (within 6 weeks) among women with and without a prior history of ischemic stroke. Methods: We conducted a retrospective cohort study using Oracle Health Real-World Data (January 2015–February 2025). We identified 220,479 completed pregnancies; prior ischemic stroke by ICD-10-CM I69.3x/Z86.73; incident ischemic stroke by I63 during pregnancy or ≤42 days postpartum. Odds ratios (ORs) with 95% CIs were estimated using multivariable logistic regression after 1:10 propensity-score matching based on demographics and comorbidities. Results: The incident ischemic stroke rates were 415 out of 1,192 pregnancies (34.82%, 95% confidence interval CI: 32.16%–37.56%) among pregnant women with a prior history of ischemic stroke and 737 out of 219,287 pregnancies (0.34%, 95% CI 0.31%–0.36%) among pregnant women without a history of ischemic stroke. In the multivariate analysis, the risk of ischemic stroke during pregnancy or early postpartum period was significantly higher among pregnancies in women with a prior history of ischemic stroke compared with those in women without a history of ischemic stroke (OR 2.37, 95% CI 1.97–2.87, p < 0.0001). Previous myocardial infarction (OR 1.82, 95% CI 1.38–2.39, p < 0.0001) and obesity (OR 1.25, 95% CI 1.07–1.47, p < 0.01) were also associated with recurrent ischemic stroke during pregnancy or early postpartum period. The odds of experiencing an incident ischemic stroke among women with a prior history of ischemic stroke was significantly higher in women during pregnancy or early postpartum period compared with those with neither of the two conditions (OR 3.35, 95% CI 2.67–4.22, p < 0.0001). Conclusions: Women with a prior history of ischemic stroke had two times higher odds of having another ischemic stroke during pregnancy or postpartum period. Our findings have implications for counseling, surveillance, and enhanced recurrent stroke prevention in this high-risk group.
Qureshi et al. (Wed,) conducted a cohort in Pregnancy (n=220,479). Prior history of ischemic stroke vs. No prior history of ischemic stroke was evaluated on Incident ischemic stroke during pregnancy or ≤42 days postpartum (OR 2.37, 95% CI 1.97-2.87, p=<0.0001). A prior history of ischemic stroke significantly increased the risk of incident ischemic stroke during pregnancy or the early postpartum period (OR 2.37; 95% CI 1.97-2.87; p<0.0001).
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