Delayed Anaphylactic Reaction to Midazolam in the Absence of Immediate Respiratory or Skin Manifestations

Anaphylaxis, a type 1 hypersensitivity reaction, is a feared but uncommon complication of medications administered in the perioperative period. The incidence of perioperative hypersensitivity reactions has been reported to range from 1 in 20,000 to 1 in 1,361. Anesthesiologists are well aware of com...

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Main Authors: Andrew Winegarner, Mark C. Kendall, Mekhala Stephen, Afreen Siddiqui
Format: Article
Language:English
Published: Wiley 2023-01-01
Series:Case Reports in Anesthesiology
Online Access:http://dx.doi.org/10.1155/2023/3873076
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author Andrew Winegarner
Mark C. Kendall
Mekhala Stephen
Afreen Siddiqui
author_facet Andrew Winegarner
Mark C. Kendall
Mekhala Stephen
Afreen Siddiqui
author_sort Andrew Winegarner
collection DOAJ
description Anaphylaxis, a type 1 hypersensitivity reaction, is a feared but uncommon complication of medications administered in the perioperative period. The incidence of perioperative hypersensitivity reactions has been reported to range from 1 in 20,000 to 1 in 1,361. Anesthesiologists are well aware of common causes of hypersensitivity such as paralytics and antibiotics; however, less common triggers of anaphylaxis need to be considered as well. Midazolam, a short acting benzodiazepine metabolized by cytochrome P450 enzymes, is considered very safe with a minimal risk profile. Previous reports have described adverse reactions to occur within seconds to minutes following the administration of midazolam. We describe a patient with no known history of asthma or allergies who underwent elective hydrocelectomy with spinal analgesia without incident until 42 minutes later at the conclusion of the procedure, when they experienced circulatory collapse necessitating immediate emergency treatment. This case emphasizes the necessity to improve knowledge and awareness of delayed hypersensitivity reactions following the administration of perioperative medications such as midazolam.
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spelling doaj-art-a4731435e32d4fe6aa3c05abe6a6d7bd2025-08-20T03:18:59ZengWileyCase Reports in Anesthesiology2090-63902023-01-01202310.1155/2023/3873076Delayed Anaphylactic Reaction to Midazolam in the Absence of Immediate Respiratory or Skin ManifestationsAndrew Winegarner0Mark C. Kendall1Mekhala Stephen2Afreen Siddiqui3Department of AnesthesiologyDepartment of AnesthesiologyDepartment of Interventional Pain Management and AnesthesiaDepartment of Interventional Pain Management and AnesthesiaAnaphylaxis, a type 1 hypersensitivity reaction, is a feared but uncommon complication of medications administered in the perioperative period. The incidence of perioperative hypersensitivity reactions has been reported to range from 1 in 20,000 to 1 in 1,361. Anesthesiologists are well aware of common causes of hypersensitivity such as paralytics and antibiotics; however, less common triggers of anaphylaxis need to be considered as well. Midazolam, a short acting benzodiazepine metabolized by cytochrome P450 enzymes, is considered very safe with a minimal risk profile. Previous reports have described adverse reactions to occur within seconds to minutes following the administration of midazolam. We describe a patient with no known history of asthma or allergies who underwent elective hydrocelectomy with spinal analgesia without incident until 42 minutes later at the conclusion of the procedure, when they experienced circulatory collapse necessitating immediate emergency treatment. This case emphasizes the necessity to improve knowledge and awareness of delayed hypersensitivity reactions following the administration of perioperative medications such as midazolam.http://dx.doi.org/10.1155/2023/3873076
spellingShingle Andrew Winegarner
Mark C. Kendall
Mekhala Stephen
Afreen Siddiqui
Delayed Anaphylactic Reaction to Midazolam in the Absence of Immediate Respiratory or Skin Manifestations
Case Reports in Anesthesiology
title Delayed Anaphylactic Reaction to Midazolam in the Absence of Immediate Respiratory or Skin Manifestations
title_full Delayed Anaphylactic Reaction to Midazolam in the Absence of Immediate Respiratory or Skin Manifestations
title_fullStr Delayed Anaphylactic Reaction to Midazolam in the Absence of Immediate Respiratory or Skin Manifestations
title_full_unstemmed Delayed Anaphylactic Reaction to Midazolam in the Absence of Immediate Respiratory or Skin Manifestations
title_short Delayed Anaphylactic Reaction to Midazolam in the Absence of Immediate Respiratory or Skin Manifestations
title_sort delayed anaphylactic reaction to midazolam in the absence of immediate respiratory or skin manifestations
url http://dx.doi.org/10.1155/2023/3873076
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