Erin M. Long, J. Ruiz, J. Foglia, K. Valchanov, A. Meikle
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Recognition, treatment, and prevention of perioperative anaphylaxis: a narrative review
Perioperative anaphylaxis events are allergic reactions which occur in the perioperative period when patients are exposed to a multitude of agents, received anesthesia, and undergo a procedure. These reactions are rare and can be life-threatening, with the common signs being hypotension, hypoxia, elevated airway pressures and urticaria. Perioperative anaphylaxis can be mediated by immunoglobulin E (IgE) or non-IgE mechanisms. Globally, the incidence of reactions and frequency of specific triggers varies considerably. Perioperative anaphylaxis events often result in discontinuation of surgery, extended hospital stays, unanticipated intensive care admissions and increased morbidity and mortality. Common causative agents include neuromuscular blocking agents (NMBA's), beta-lactam antibiotics, chlorhexidine, and latex. The primary treatment of perioperative anaphylaxis is removal of the offending agent, epinephrine, and adequate fluid resuscitation. Post-operative workup involves serial serum tryptase measurements, skin testing, in-vitro testing and challenges to determine the culprit agent. Several countries including the UK, Spain, France, Australia, and New Zealand have established guidelines, reporting systems, and specialized clinics dedicated to perioperative hypersensitivity reactions. Future efforts should address diagnostic challenges as well as increasing awareness of other perioperative anaphylaxis triggers. This narrative review will provide an overview of the epidemiology, diagnosis, management, and prevention of perioperative anaphylaxis events.