Related Experiment Video
Updated: May 21, 2026

Improved Renal Denervation Mitigated Hypertension Induced by Angiotensin II Infusion
Published on: May 26, 2022
Comparative Effectiveness of Renin-Angiotensin System Inhibitors in Heart Failure With Nonreduced Ejection Fraction:
Ming-Shyan Lin1,2,3, Po-Chang Wang1, Jung-Jung Chang1
1Division of Cardiology, Department of Internal Medicine, Chang Gung Memorial Hospital Chiayi Branch, Chiayi, Taiwan.
Insights
Angiotensin receptor blockers (ARBs) showed lower all-cause mortality than angiotensin-converting enzyme inhibitors (ACEis) in heart failure with nonreduced ejection fraction (HFnon-rEF). Cardiovascular outcomes were similar between these drug classes in this real-world study.
Area of Science:
- Cardiology
- Pharmacology
- Clinical Research
Background:
- Uncertainty exists regarding the comparative effectiveness of ACEis and ARBs for HFnon-rEF.
- Real-world data on long-term outcomes for these therapies post-acute heart failure hospitalization are limited.
Purpose of the Study:
- To compare long-term cardiovascular outcomes and mortality between ACEis and ARBs in patients with HFnon-rEF.
- To evaluate the effectiveness of non-renin-angiotensin system inhibitors (RASi) as a comparator group.
Main Methods:
- Retrospective multicenter study of 5837 patients with HFnon-rEF (LVEF ≥ 40%) from 2005-2019.
- Patients were grouped by discharge prescription: ACEi, ARB, or non-RASi.
- Used a 14-day landmark approach and inverse probability of treatment weighting to minimize bias and balance covariates.
Main Results:
- The primary composite outcome of CV death or HF rehospitalization at 1 year was similar between ARB and ACEi users (aHR, 0.94; 95% CI, 0.75-1.17).
- ARB therapy was associated with significantly lower all-cause mortality compared to ACEi (aHR, 0.74; 95% CI, 0.55-0.99) and non-RASi (aHR, 0.80; 95% CI, 0.67-0.94).
Conclusions:
- In real-world HFnon-rEF patients, ARB use was linked to reduced all-cause mortality versus ACEi, with similar CV event rates.
- These findings are hypothesis-generating and do not establish ARB superiority; further research is warranted.
Abstract:
BackgroundThe comparative effectiveness of angiotensin-converting enzyme inhibitors (ACEis) versus angiotensin receptor blockers (ARBs) in heart failure with nonreduced ejection fraction (HFnon-rEF) remains uncertain. We evaluated long-term outcomes of these therapies in a real-world cohort following hospitalization for acute heart failure.MethodsThis retrospective multicenter study (2005-2019) included 5837 patients with HFnon-rEF (left ventricular ejection fraction ≥ 40%). Patients were categorized by discharge prescription into ACEi, ARB, or non-renin-angiotensin system inhibitor (RASi) groups. A 14-day landmark approach ensured pharmacological stabilization and reduced time-related bias. Inverse probability of treatment weighting was used to balance covariates (SMD < 0.1). The primary outcome was a composite of cardiovascular (CV) death or heart failure rehospitalization at 1 year.ResultsThe primary composite outcome was similar between ARB and ACEi users (adjusted hazard ratio [HR], 0.94; 95% confidence interval [CI], 0.75-1.17; P = .556). However, ARB therapy was associated with lower all-cause mortality compared with ACEi (adjusted HR, 0.74; 95% CI, 0.55-0.99; P = .041) and non-RASi (adjusted HR, 0.80; 95% CI, 0.67-0.94; P = .008). Subgroup analyses showed generally consistent directional associations between ARB use and lower mortality, although these findings were exploratory.ConclusionsIn this real-world cohort of patients with HFnon-rEF, ARB use was associated with lower all-cause mortality compared with ACEi, despite similar CV outcomes. These findings do not establish superiority and should be interpreted as hypothesis-generating.
Related Concept Videos
Heart Failure Drugs: Inhibitors of Renin-Angiotensin System
Heart Failure V: Medical Management
Antihypertensive Drugs: Direct Renin Inhibitors
Heart Failure II: Pathophysiology
Antihypertensive Drugs: Angiotensin-Converting Enzyme Inhibitors
Heart Failure Drugs: Diuretics