Association between Pregnancy and Cervical Artery Dissection.

Area of Science:

• Neurology
• Obstetrics & Gynecology
• Vascular Medicine

Background:

• Cervical artery dissection (CAD) is a significant cause of stroke, particularly in younger adults.
• The association between pregnancy and CAD has not been well-established.
• Understanding risk factors for CAD is crucial for stroke prevention.

Purpose of the Study:

• To investigate the association between pregnancy and the occurrence of cervical artery dissection.
• To determine if pregnancy increases the risk of CAD and identify specific timeframes of heightened risk.

Main Methods:

• A case-control study was conducted using claims data from New York and Florida emergency departments and hospitals (2005-2015).
• Cases were women aged 12-42 hospitalized with CAD; controls were women with renal colic, matched 1:1.
• Pregnancy was defined as labor/delivery within 90 days before or 6 months after the index visit. A secondary cohort-crossover analysis was performed.

Main Results:

• Pregnancy was more common in women with CAD (odds ratio, 2.5; 95% CI, 1.3-4.7).
• Pregnancy was associated with an increased risk of CAD (IRR, 2.2; 95% CI, 1.3-3.5).
• The risk of CAD was substantially higher during the postpartum period (IRR, 5.5; 95% CI, 2.6-11.7).

Conclusions:

• Pregnancy, especially the postpartum period, is associated with hospitalization for cervical artery dissection.
• Arterial dissection may be a mechanism through which pregnancy contributes to stroke.
• Further research is warranted to explore the underlying pathophysiology and clinical implications.