Abstract
Background/Objectives: Heart failure (HF) is a leading cause of hospitalization in older adults, with significant sex differences in presentation, treatment, and outcomes. Transitional care models may benefit women more, yet they often receive less follow-up. This study assessed whether the clinical impact of the UMIPIC multidisciplinary HF management program differs by sex. Methods: This prospective, multicenter, observational cohort study included HF patients enrolled in the UMIPIC program or followed through conventional care in the RICA registry. Outcomes (30-day and one-year mortality and readmissions) were compared between groups, stratified by sex. Multivariate Cox models adjusted for age, HF phenotype, comorbidities, and baseline therapy. Results: A total of 5644 HF patients were included, with 2034 (36%) managed in UMIPIC and 3610 (64%) receiving conventional care. Women represented 55% of UMIPIC patients and were older, with higher prevalence of hypertension, anemia, and HF with preserved ejection fraction (HFpEF) compared to conventional care. At 30 days, women in UMIPIC had lower all-cause mortality (4.0% vs. 8.0%), cardiovascular mortality (2.0% vs. 6.0%), and readmissions (9.0% vs. 18.0%; all p < 0.01); these benefits persisted at one year. In multivariate analysis, UMIPIC enrollment remained protective (HR: 0.79; 95% CI: 0.71-0.87; p < 0.001). In men, UMIPIC patients were older with more comorbidities and higher HFpEF prevalence. They also showed lower 30-day mortality (2.0% vs. 8.0%; p < 0.05) and readmissions (8.0% vs. 18.0%; p < 0.01), with benefits maintained at one year. UMIPIC enrollment remained independently associated with reduced one-year mortality in men (HR: 0.79; 95% CI: 0.71-0.88; p < 0.001). Conclusions: The UMIPIC multidisciplinary care model reduced one-year mortality and readmissions in both women and men with HF, supporting integrated care strategies to improve outcomes in this high-risk population.