SynthesisEuropean heart journal. Cardiovascular pharmacotherapy2024
Effects of renin-angiotensin system blockers on outcomes from COVID-19: a systematic review and meta-analysis of randomized controlled trials.
Synthesis in European heart journal. Cardiovascular pharmacotherapy, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
9 citing papers in PubMed, 11 citations in OpenAlex.
- Effects of Losartan on Patients Hospitalized for Acute COVID-19: A Randomized Controlled Trial.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2024Trial
- Life's Essential 8 and Risk of Severe COVID-19 Among Adults Without Clinical Cardiovascular Disease: The C4R Study.Journal of the American Heart Association · 2026Article
- Combined ACEI and ARB therapy and ICU mortality in critically ill COVID-19 patients: a retrospective cohort study.Frontiers in pharmacology · 2026Article
- The use of angiotensin-converting enzyme inhibitors in hospitalized patients with COVID-19 is associated with a lower risk of mortality.Scientific reports · 2025Article
- Immunomodulatory Effects of RAAS Inhibitors: Beyond Hypertension and Heart Failure.Biomedicines · 2025Review
- Integrated renin angiotensin system dysregulation and immune profiles predict COVID-19 disease severity in a South African cohort.Scientific reports · 2025Article
- Diabetic cardiomyopathy and COVID-19: intersecting pathways and amplified cardiovascular risk.Frontiers in pharmacology · 2025Review
- Treat or not treat COVID-19 with combined renin-angiotensin system and neprilysin inhibition: Have we found a solution?European journal of heart failure · 2025Article
- Retrospective Study on the Features and Outcomes of a Tuscany COVID-19 Hospitalized Patients Cohort: Preliminary Results.Journal of clinical medicine · 2024Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors at 2 institutions in 3 countries.
Funding
Abstract
BACKGROUND AND
aimsRandomized controlled trials (RCTs) have assessed the effects of renin-angiotensin system (RAS) blockers in adults with coronavirus disease 2019 (COVID-19). This meta-analysis provides estimates of the safety and efficacy of treatment with (vs. without) RAS blockers from these trials.
methodsPubMed, Web of Science, and ClinicalTrials.gov were searched (1 March-12 April 2023). Event/patient numbers were extracted, comparing angiotensin-converting enzyme (ACE) inhibitor/angiotensin-receptor blocker (ARB) treatment with no treatment, for the outcomes: intensive care unit (ICU) admission, mechanical ventilation, vasopressor use, acute kidney injury (AKI), renal replacement therapy (RRT), acute myocardial infarction, stroke/transient ischaemic attack, heart failure, thromboembolic events, and all-cause death. Fixed-effects meta-analysis estimates were pooled.
resultsSixteen RCTs including 3492 patients were analysed. Compared with discontinuation of RAS blockers, continuation was not associated with increased risk of ICU [risk ratio (RR) 0.96, 0.66-1.41], ventilation (RR 0.77, 0.55-1.09), vasopressors (RR 0.92, 0.58-1.44), AKI (RR 1.01, 0.40-2.56), RRT (RR 1.01, 0.46-2.21), or thromboembolic events (RR 1.07, 0.36-3.19). RAS blocker initiation was not associated with increased risk of ICU (RR 0.71, 0.47-1.08), ventilation (RR 1.12, 0.91-1.38), AKI (RR 1.28, 0.89-1.86), RRT (RR 1.66, 0.89-3.12), or thromboembolic events (RR 1.20, 0.06-23.70), although vasopressor use increased (RR 1.27, 1.02-1.57). The RR for all-cause death in the continuation/discontinuation trials was 1.24 (0.80-1.92), and 1.22 (0.96-1.55) in the initiation trials. In patients with severe/critical COVID-19, RAS blocker initiation increased the risk of all-cause death (RR 1.31, 1.01-1.72).
conclusionACE inhibitors and ARBs may be continued in non-severe COVID-19 infection, where indicated. Conversely, initiation of RAS blockers may be harmful in critically ill patients.PROSPERO registration number: CRD42023408926.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.