Do men and women have different outcomes after a TIA with atrial fibrillation?

After a transient ischemic attack (TIA) with atrial fibrillation, both men and women face risks of future stroke and other vascular problems. However, some studies suggest that outcomes may differ by sex. The evidence is not definitive, but it points to some important differences that patients and doctors should consider.

What the research says

A 2021 study of TIA patients found that the risk of stroke recurrence was similar for men and women (12.6% for women vs 14.3% for men) ⁸. However, women had a higher risk of major vascular events (heart attack, stroke, or vascular death) compared to men (hazard ratio 1.57) ⁸. Another study from 2023 reported that men were more likely to screen positive for cognitive impairment after stroke or TIA, even after adjusting for other risk factors (odds ratio 1.34) ⁷. A post hoc analysis of patients with nonvalvular atrial fibrillation and recent stroke or TIA found no significant sex difference in the primary composite outcome of cardiovascular death, ischemic stroke, myocardial infarction, systemic embolism, urgent revascularization, or major bleeding ³. However, this study was small (222 patients) and mostly men (74.8%), which may limit its ability to detect differences ³. Overall, the evidence is mixed, but suggests that while stroke recurrence rates may be similar, women may have higher risk of major vascular events and men may have higher risk of cognitive impairment.

What to ask your doctor

• Given my sex, what is my personal risk of stroke or other vascular events after a TIA with atrial fibrillation?
• Should I be screened for cognitive changes after a TIA, especially if I am a man?
• Are there any differences in how atrial fibrillation is managed in men versus women after a TIA?
• What can I do to lower my risk of major vascular events, such as heart attack or stroke?
• Do my other health conditions (like high blood pressure or diabetes) affect my risk differently based on my sex?