Gender-related differences in clinical management after exercise nuclear testing

Area of Science:

• Cardiology
• Nuclear Medicine
• Medical Imaging

Background:

• Disputed gender differences in coronary artery disease management.
• Previous studies suggest gender disparities in clinical practice.

Purpose of the Study:

• Determine gender-specific referral rates to cardiac catheterization.
• Assess referral patterns based on myocardial ischemia severity from nuclear imaging.

Main Methods:

• Examined 3,211 patients (1,074 women, 2,137 men) undergoing exercise nuclear imaging.
• Follow-up for cardiac events and referral to catheterization/revascularization within 60 days.
• Used logistic regression to identify referral predictors and gender's role.

Main Results:

• Men referred more often initially (10.6% vs 7.1%), but no difference existed when stratified by ischemia severity.
• In severe ischemia, women had higher referral rates (clinically appropriate due to higher event rates).
• Gender did not add predictive information for referral when perfusion abnormalities were considered.

Conclusions:

• No gender referral bias when adjusting for perfusion scan abnormalities.
• Women with severe ischemia were underreferred relative to men, despite higher cardiac event rates.
• Need for improved identification of high-risk women for cardiac interventions.