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Abstract
Objectives:To study sex differences in clinical characteristics and outcomes among multi-ethnic Southeast Asian patients with hospitalized heart failure (HHF).Background:HHF is an important public health problem affecting man and women globally. Reports from Western populations suggest striking sex differences in risk factors and outcomes in HHF. However, this has not been studied in a multi-ethnic Asian population.Methods:Using the population-based resources of the Singapore Cardiac Data Bank, we studied 5,703 consecutive cases of HHF admitted across hospitals in the Southeast Asian nation of Singapore from 1st January, 2008 through 31st December, 2009.Results:Women accounted for 46% of total admissions and were characterized by older age (73 vs. 67 years; p<0.001), higher prevalence of hypertension (78.6 vs. 72.1%; p<0.001) or atrial fibrillation (22.2 vs. 18.1%; p<0.001), and lower prevalence of coronary artery disease (33.8 vs. 41.0%; p<0.001) or prior myocardial infarction (14.9 vs. 19.8%; p<0.001). Women were more likely than men to have HHF with preserved ejection fraction (42.5% versus 20.8%, p < 0.001). Women were less likely than men to receive evidencebased therapies at discharge, both in the overall group and in the sub-group with reduced ejection fraction. Women had longer lengths of stay (5.6 vs. 5.1 days; p<0.001) but similar in-hospital mortality and one-year rehospitalization rates compared to men. Independent predictors of mortality or rehospitalization in both men and women included prior myocardial infarction and reduced ejection fraction. Among women alone, additional independent predictors were renal impairment, atrial fibrillation, and diabetes. Prescription of beta-blockers and ACE-inhibitors at discharge was associated with better outcomes.Conclusion:Among multi-ethnic Asian patients with HHF, there are important sex differences in clinical characteristics and prognostic factors. These data may inform sex-specific strategies to improve outcomes of HHF in Southeast Asians.
Highlights
Hospitalized heart failure (HHF) is a disease that knows no geographic, gender, or socioeconomic boundaries
Using the population-based resources of the Singapore Cardiac Data Bank, we studied 5,703 consecutive cases of HHF admitted across hospitals in the Southeast Asian nation of Singapore from 1st January, 2008 through 31st December, 2009
Women were more likely than men to have HHF with preserved ejection fraction (42.5% versus 20.8%, p < 0.001)
Summary
Hospitalized heart failure (HHF) is a disease that knows no geographic, gender, or socioeconomic boundaries. It is a leading cause of morbidity and mortality worldwide, and is projected to rise with increasing longevity of populations. While prior studies have highlighted fundamental sex differences in HHF, most of these data were derived in Western populations. Reports from Western populations suggest striking sex differences in risk factors and outcomes in HHF. This has not been studied in a multi-ethnic Asian population
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Schedule a callMore From: ASEAN heart journal : Official journal of the ASEAN Federation of Cardiology
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