Anaphylactic Responses to Neuromuscular Blockade Drugs and Reversal Drugs

AbstractPurpose of ReviewThis review discusses the incidence of anaphylaxis to neuromuscular blockade drugs (NMBDs), the mechanism and clinical features, as well as theories around sensitisation (including the pholcodine hypothesis), the developing area of anaphylaxis to reversal agents, and testing practices.Recent FindingsThe incidence and characteristics of anaphylaxis to NMBDs have recently been better established by large observational studies. In addition to the well-established IgE-mediated mechanism, new research has highlighted other mechanisms, including the mast cell receptor “MRGPRX2.” Sensitisation through other pharmacological, environmental, or occupational exposure appears to exist, with a body of evidence implicating pholcodine resulting in its recent withdrawal from the European market. The impact of this is awaited. Sugammadex has become an increasing area of focus. Whilst initially proposed as a potential treatment for anaphylaxis, the weight of evidence does not support this and importantly sugammadex has emerged as a cause of anaphylaxis.SummaryAnaphylaxis to NMBDs is an important cause of patient collapse and mortality during the perioperative period. Thorough understanding of this topic is essential for all clinicians using these drugs.
Source: Current Anesthesiology Reports - Category: Anesthesiology Source Type: research