Evidence-Based Pharmacological Treatment for Heart Failure in Brazil

Abstract

Background:

Heart failure (HF) affects an estimated 64 million individuals globally. Current guideline-directed medical therapy (GDMT) comprises four cornerstone pharmacological medications proven to reduce hospitalization and/or mortality: renin-angiotensin system inhibitors, beta-blockers, mineralocorticoid receptor antagonists (MRA), and sodium-glucose cotransporter 2 inhibitors (SGLT2i).

Objective:

This study aimed to describe, through an exploratory analysis, access to HF drug therapy in Primary Health Care in Brazil, via the Brazilian Unified Health System (SUS).

Methods:

This was a descriptive, cross-sectional study based on data extracted from Municipal Lists of Essential Medicines (REMUMEs) published on official municipalities’ websites from Brazilian metropolitan regions in June 2024.

Results:

A total of 387 municipalities were included, of which only 50.9% had a REMUME publicly available. Among these, 61.4% had been published within the previous 2 years. The frequency of each drug class was as follows: angiotensin-converting enzyme inhibitors in 92.4% of municipalities, angiotensin II receptor blockers in 80.2%, cardioselective beta-blockers in 91.9%, and MRAs in 85.8%. No REMUME simultaneously included all four GDMT medications. In 22.3% of the metropolitan cities, only two or fewer drug classes were available to patients’ access.

Conclusion:

The remarkable variability in the composition of REMUMEs, along with the frequent omission of at least one of the four essential pharmacological pillars, indicates a potential suboptimal management of HF at the population level. Given the importance of comprehensive pharmacological treatment in HF, these findings highlight ongoing challenges in access to essential medicines within the SUS, even in metropolitan areas.