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Sex differences in diagnosis and treatment of heart failure: toward precision medicine
1Division of Cardiology, Department of Internal Medicine and Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea.
Insights
Sex differences impact heart failure (HF) pathophysiology and drug responses. Current HF guidelines and drug dosages may not be suitable for women, necessitating sex-specific treatment approaches.
Area of Science:
- Cardiology
- Pharmacology
- Sex Differences in Medicine
Background:
- Biological variations between sexes influence heart failure (HF) pathophysiology and drug interactions.
- Physiological differences in cardiovascular systems and body composition affect drug efficacy and safety.
Purpose of the Study:
- To review existing evidence on sex-related differences in heart failure.
- To highlight the need for sex-specific guidelines in HF management.
Main Methods:
- Literature review of studies examining sex-based disparities in HF.
- Analysis of clinical trial data regarding drug pharmacokinetics, pharmacodynamics, and treatment outcomes.
- Examination of epidemiological and prognostic data stratified by sex.
Main Results:
- Significant sex-related differences exist in HF epidemiology, pathophysiology, and clinical presentation.
- Women are underrepresented in clinical trials and have lower device implantation rates.
- Current HF medications and dosages, based on male-predominant data, may not be optimal for women.
Conclusions:
- Existing heart failure guidelines lack sex-specific recommendations.
- Sex-specific treatment strategies are crucial for optimizing HF care in women.
- Further research is needed to address sex-based disparities in heart failure treatment and outcomes.
Abstract:
There are sex-related differences in the pathophysiology and phenotype of heart failure (HF) as well as the pharmacokinetics and pharmacodynamics of drugs between women and men due to biological differences, such as heart and vessel size, response to blood volume and pressure, body water and muscle compositions, and dominant sex hormones. Therefore, target drug doses required to achieve the same clinical effect differ between the sexes, while there may also be sex-related differences in side effects of a given drug at the same dose. These biological differences have been reflected in the results of clinical trials. Moreover, women have been underrepresented in pharmacological therapy trials as well as having lower device implantation rates than men. Therefore, the currently recommended target doses of medications based on clinical trials may not be appropriate for women. Although guidelines for HF have been standardized since the last major revision in 2021, most do not differentiate by sex. This review focuses on evidence regarding sex-related differences in multiple aspects of HF, including epidemiology, pathophysiology, clinical features, treatment, and prognosis, highlighting the need for sex-specific treatment guidelines.
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