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09 February 2024 : Case report  USA

[In Press] A Case of Trauma-Related Angioedema of the Airway in a Patient on an Angiotensin Receptor Blocker

Unusual clinical course, Unusual or unexpected effect of treatment, Diagnostic / therapeutic accidents, Unexpected drug reaction

Saint-Martin Allihien1ABDEF, Sammudeen Ibrahim1AE, Swethapriya Chaparala1E, Shreyas Singireddy1E, Onoriode Kesiena1E

DOI: 10.12659/AJCR.943407

Am J Case Rep In Press; DOI: 10.12659/AJCR.943407  

Available online: 2024-02-09, In Press, Corrected Proof

Publication in the "In-Press" formula aims at speeding up the public availability of the pending manuscript while waiting for the final publication. The assigned DOI number is active and citable. The availability of the article in the Medline, PubMed and PMC databases as well as Web of Science will be obtained after the final publication according to the journal schedule


Angioedema is non-pitting edema that occurs in the deep layers of the skin and subcutaneous tissue due to vascular leakage of plasma resulting from 1 of 2 major pathophysiological processes: mast cell-mediated angioedema and bradykinin-mediated angioedema. While it is a well-recognized adverse reaction of angiotensin-converting enzyme inhibitors, the association of angioedema with angiotensin receptor blockers is relatively less studied. Direct local trauma, although rarely, has been suggested to induce angioedema under certain conditions. We present a unique case of direct, local, trauma-related angioedema in a patient on an angiotensin receptor blocker.
The patient, an 83-year-old woman on telmisartan for hypertension, hit her neck against the edge of a chair during a fall. Shortly thereafter, she developed progressive airway compromise due to airway angioedema, as noted on direct laryngoscopy. A contrast CT scan of the neck also noted edema of the periglottic and supraglottic regions. She required intravenous corticosteroid administration and intubation in the emergency room and was successfully extubated 3 days after admission. She had no prior history of angioedema or allergy. We hypothesize that increased levels of circulatory bradykinin in the setting of telmisartan, combined with a local release of bradykinin from trauma, was the main pathophysiologic cause of the angioedema.
This case report highlights the rare and often forgotten adverse reaction of angioedema with use of angiotensin receptor blockers and confirms the finding of local trauma as a possible trigger.

Keywords: Angioedema; Telmisartan; Essential Hypertension; Bradykinin

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09 Jan 2024 : Case report  Saudi Arabia

Neurotrophic Keratopathy in Marfan Syndrome Patient After Micropulse Transscleral Cyclophotocoagulation: A ...

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Definitive Closure Using an Ovine Reinforced Tissue Matrix in Contaminated Penetrating Abdominal Trauma

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Herpes Simplex Keratitis as a Complication of Pterygium Surgery

Am J Case Rep In Press; DOI: 10.12659/AJCR.942401  

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Am J Case Rep In Press; DOI: 10.12659/AJCR.942896  

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American Journal of Case Reports eISSN: 1941-5923
American Journal of Case Reports eISSN: 1941-5923