[New aspects in clinical cardiology: sex-based differences in cardiovascular morbidity and mortality]

Area of Science:

• Cardiology
• Clinical Pharmacology
• Epidemiology

Context:

• Heart disease progression and outcomes can differ between sexes.
• Historical data show declining heart failure incidence in women, unlike men.
• Factors like sodium excretion and obesity disproportionately affect women's cardiovascular mortality risk.

Purpose:

• To investigate potential sex-based differences in heart disease incidence and survival.
• To assess the effect of digoxin therapy on mortality risk in women.
• To critically evaluate existing studies on sex-based differences in cardiovascular disease treatment and outcomes.

Summary:

• A post-hoc analysis of the DIG study suggested increased mortality risk for women on digoxin, but this conclusion is limited by a narrow focus on gender without considering other significant patient differences.
• Conflicting data exist regarding sex-based differences in cardiovascular disease, highlighting the need for comprehensive analyses.
• The Women's Health Initiative trial unequivocally demonstrated that combined estrogen/progestin therapy should not be used for primary prevention of coronary heart disease in postmenopausal women due to increased cardiovascular risks.

Impact:

• Highlights the critical need for sex-specific considerations in cardiovascular research and clinical practice.
• Underscores the limitations of subgroup analyses that do not account for multifactorial patient characteristics.
• Provides evidence-based guidance against using hormone replacement therapy for primary cardiovascular prevention in postmenopausal women.