Geriatric Pharmacotherapy Case Series: Recurrent Angioedema Following Discontinuation of ACE Inhibitor Therapy

Author:

Perman Bryton1,Narechania Shraddha1,Malesker Mark1

Affiliation:

1. Creighton University School of Medicine, Omaha, Nebraska.

Abstract

Introduction Angiotensin-converting enzyme inhibitors (ACEIs) are first-line pharmaceutical agents in common chronic conditions such as hypertension and heart failure with reduced ejection fraction. When angioedema occurs, if secondary to ACEIs, discontinuation of the ACEI is necessary to mitigate the risk of recurrent angioedema. While angioedema is a well-known adverse effect of ACEIs, it is not well-known that angioedema may recur even after ACEI discontinuation. Additionally, only few reports in the literature describe this phenomenon. This case describes an older man with a history of chronic obstructive pulmonary disease, hypothyroidism, diabetes mellitus, hypertension, and heart failure who presented from an assisted living facility with recurrent angioedema 12 days after an initial episode of angioedema where his ACEI therapy (enalapril) was discontinued. Assessment Empiric methylprednisolone, diphenhydramine, intramuscular epinephrine, intravenous C1 esterase inhibitor Berinert®, and two units of fresh frozen plasma was given in the emergency department. The patient was monitored in the intensive care unit because of mild airway compromise but did not require invasive airway protection. Serum C4 level was normal, ruling out hereditary angioedema. Outcome Patient was discharged after five days in stable condition with resolution of symptoms. Conclusion ACEIs are the most common cause of drug-induced angioedema in the United States. Angioedema is self-limiting swelling that requires close airway monitoring. While health professionals recognize the risk for angioedema with active ACEI use, it is not well known that the risk of angioedema may occur for months following cessation of ACEI therapy. Increased awareness of delayed ACEI-induced angioedema following ACEI discontinuation is important for both providers and pharmacists to provide appropriate diagnosis and monitoring. Improved awareness would also allow patients with a history of ACEI-induced angioedema to be cognizant of the potential for recurrence following drug discontinuation.

Publisher

American Society of Consultant Pharmacists

Subject

General Medicine

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