Effect of Angiotensin-Converting Enzyme Inhibitor and Angiotensin Receptor Blocker Initiation on Organ Support-Free Days in Patients Hospitalized With COVID-19: A Randomized Clinical Trial

  • 0Peter Munk Cardiac Centre at University Health Network, Toronto, Canada.

|

|

Summary

This summary is machine-generated.

Initiating angiotensin-converting enzyme (ACE) inhibitors or angiotensin receptor blockers (ARBs) in critically ill COVID-19 patients did not improve outcomes and may have worsened them. This study highlights potential risks associated with RAS inhibitors in this population.

Area Of Science

  • Cardiology
  • Infectious Diseases
  • Critical Care Medicine

Background

  • The renin-angiotensin system (RAS) plays a role in cardiovascular and renal function.
  • Overactivation of the RAS has been implicated in severe COVID-19 outcomes.
  • Understanding the impact of RAS inhibitors on COVID-19 patients is crucial for clinical management.

Purpose Of The Study

  • To investigate whether initiating angiotensin-converting enzyme (ACE) inhibitors or angiotensin receptor blockers (ARBs) improves clinical outcomes in hospitalized COVID-19 patients.
  • To evaluate the safety and efficacy of RAS inhibitors in critically ill COVID-19 patients.

Main Methods

  • An adaptive platform randomized clinical trial involving critically ill and non-critically ill hospitalized adults with COVID-19.
  • Patients were randomized to receive ACE inhibitors, ARBs, or no RAS inhibitor (control) for up to 10 days.
  • The primary outcome was organ support-free days, assessed using a Bayesian cumulative logistic model.

Main Results

  • Enrollment was discontinued due to safety concerns.
  • Initiation of ACE inhibitors or ARBs did not improve organ support-free days compared to control.
  • RAS inhibitor initiation was associated with a higher probability of worsened clinical outcomes and lower hospital survival rates.

Conclusions

  • In critically ill adults with COVID-19, initiating ACE inhibitors or ARBs did not improve clinical outcomes.
  • RAS inhibitor use in this patient group likely worsened outcomes, including hospital survival.
  • These findings suggest caution when using RAS inhibitors in critically ill COVID-19 patients.

Related Concept Videos

Heart Failure Drugs: Inhibitors of Renin-Angiotensin System 01:26

474

The activation of the sympathetic nervous system and the renin-angiotensin-aldosterone system (RAAS) contributes to cardiac remodeling, and inhibiting the RAAS is a pharmacological target in heart failure management. As a result, neurohumoral modulation is a crucial treatment principle for managing heart failure. This approach involves using medications like ACE inhibitors (ACEIs), angiotensin receptor blockers (ARBs), β-blockers, mineralocorticoid receptor antagonists (MRAs), and neutral...

Heart Failure V: Medical Management 01:30

18

Medical Management of Acute Decompensated Heart Failure (ADHF)The primary goals of therapy for patients hospitalized with acute decompensated heart failure (ADHF) include:Relieving symptomsOptimizing volume statusSupporting oxygenation and ventilationMaintaining cardiac output (CO) and end-organ perfusionIdentifying and addressing the cause of ADHFPreventing complicationsProviding patient education on factors precipitating HF exacerbationPlanning for dischargeOngoing monitoring and assessment...

Antihypertensive Drugs: Angiotensin-Converting Enzyme Inhibitors 01:30

723

Angiotensin-converting enzyme (ACE), a vital component of the renin-angiotensin-aldosterone system, is abundant in lung endothelial cells. ACE converts the inactive decapeptide, angiotensin I, into the active octapeptide, angiotensin II. This potent vasoconstrictor narrows blood vessels, increasing resistance to blood flow and elevating blood pressure. Angiotensin II also stimulates aldosterone production, encouraging kidney cells to reabsorb more sodium and water from urine, thereby increasing...

Heart Failure VI: Adjunct Therapies 01:22

20

Additional therapies for treating patients with heart failure (HF) may include procedural interventions, supplemental oxygen, the management of sleep disorders, and nutritional therapy.Procedural InterventionsImplantable Cardioverter-Defibrillator: For patients at risk of life-threatening arrhythmias due to severe left ventricular dysfunction, an Implantable Cardioverter-Defibrillator (ICD) can detect and terminate these arrhythmias, preventing sudden cardiac death and improving survival rates.

Aortic Regurgitation III: Medical Management 01:25

30

Aortic regurgitation (AR) is when the aortic valve does not close or seal properly, leading to backward blood circulation from the aorta into the left ventricle during diastole. Common causes of AR include rheumatic heart disease, congenital valve defects, and aortic root dilation. Managing AR requires a multifaceted approach to alleviate symptoms, preserve left ventricular function, and address the underlying cause of the regurgitation. Patients with symptomatic AR or significant left...

Antihypertensive Drugs: Direct Renin Inhibitors 01:25

721

The renin-angiotensin-aldosterone system (RAAS) is an intricate physiological pathway involving numerous enzymes and hormones, including renin, angiotensin-converting enzyme (ACE), angiotensin I and II, and aldosterone. Imbalances within this system increase the production of angiotensin II and aldosterone. Increased angiotensin II levels promote vasoconstriction and blood pressure elevation. Concurrently, higher aldosterone levels stimulate sodium and water reabsorption in the kidneys,...