Myocardial Infarction Symptoms and Diagnosis in Women

Primary Symptom Presentation

• The American College of Cardiology notes that chest pain/discomfort is reported by 87-92% of women with MI, described as retrosternal pressure, tightness, heaviness, squeezing, crushing, cramping, burning, or aching sensation that builds gradually over several minutes 1, 2
• Women with MI are more likely to present with "typical" symptoms than men (77% vs 59%) when using standardized diagnostic criteria 1

Accompanying Symptoms More Common in Women

• Shortness of breath occurs in 53-59% of women with MI 1
• Unusual fatigue is reported by 59-70% of women, often as a prodromal symptom in the days preceding MI 1
• Nausea and vomiting are more common in women than men 1, 4, 5
• Pain in jaw, neck, arms, or between shoulder blades occurs in 61.9% of women versus 54.8% of men aged ≤55 years 1, 2, 3

High-Risk Populations Requiring Heightened Awareness

• The American Heart Association suggests that diabetes is a stronger risk factor for MI in women than in men 2, 3
• Women with diabetes may present with atypical symptoms due to autonomic dysfunction 5, 2, 3

Critical Clinical Pitfalls to Avoid

• Traditional risk assessment tools and physician clinical judgment consistently underestimate cardiac risk in women and misclassify their symptoms as nonischemic chest pain 1, 2, 3
• Women are less likely to receive timely and appropriate care despite similar or higher symptom burden 1, 2

Pathophysiologic Differences Explaining Symptom Patterns

• Women have a higher proportion of MI caused by mechanisms other than classical plaque rupture, including plaque erosion, coronary microvascular dysfunction, coronary vasospasm, spontaneous coronary artery dissection, and stress-related (Takotsubo) cardiomyopathy 2
• Myocardial ischemia is associated with higher IHD mortality among symptomatic women than among men 6, 4

Immediate Diagnostic Approach

• Any woman presenting with chest discomfort plus accompanying symptoms (especially shortness of breath, nausea, jaw/neck pain, or diaphoresis) requires immediate 12-lead ECG within 10 minutes and cardiac biomarker assessment 2, 3
• Place patient in environment with continuous ECG monitoring and defibrillation capability 1

Treatment Considerations

• Women derive equal benefit from aspirin, clopidogrel, anticoagulants, beta blockers, ACE inhibitors, statins, and GP IIb/IIIa antagonists (when troponin elevated) as men 5
• Women are at increased risk of bleeding complications, requiring careful attention to dosing of antiplatelet and anticoagulant agents based on estimated creatinine clearance rather than serum creatinine alone 5