• Harper N J N NJN Manchester University NHS Foundation Trust, Manchester, UK; Manchester Academic Heath Science Centre, University of Manchester, Manchester, UK; Royal Col, T M Cook, T Garcez, D N Lucas, M Thomas, H Kemp, K-L Kong, S Marinho, S Karanam, K Ferguson, J Hitchman, H Torevell, A Warner, W Egner, S Nasser, N McGuire, M Bellamy, K Floss, L Farmer, and S Farooque.
• Manchester University NHS Foundation Trust, Manchester, UK; Manchester Academic Heath Science Centre, University of Manchester, Manchester, UK; Royal College of Anaesthetists, London, UK.
• Br J Anaesth. 2018 Jul 1; 121 (1): 172-188.

BackgroundAnaphylaxis during anaesthesia is a serious complication for patients and anaesthetists. There is little published information on management and outcomes of perioperative anaphylaxis in the UK.MethodsThe 6th National Audit Project of the Royal College of Anaesthetists (NAP6) collected and reviewed 266 reports of Grade 3-5 anaphylaxis from all UK NHS hospitals over 1 yr. Quality of management was assessed against published guidelines.ResultsAppropriately senior anaesthetists resuscitated all patients. Immediate management was 'good' in 46% and 'poor' in 15%. Recognition and treatment of anaphylaxis were prompt in 97% and 83% of cases, respectively. Epinephrine was administered i.v. in 76%, i.m. in 14%, both in 6%, and not at all in 11% of cases. A catecholamine infusion was administered in half of cases. Cardiac arrests (40 cases; 15%) were promptly treated but cardiac compressions were omitted in half of patients with unrecordable BP. The surgical procedure was abandoned in most cases, including 10% where surgery was urgent. Of 54% admitted to critical care, 70% were level 3, with most requiring catecholamine infusions. Ten (3.8%) patents (mostly elderly with cardiovascular disease) died from anaphylaxis. Corticosteroids and antihistamines were generally administered early. We found no clear evidence of harm or benefit from chlorphenamine. Two patients received vasopressin and one glucagon. Fluid administration was inadequate in 19% of cases. Treatment included sugammadex in 19 cases, including one when rocuronium had not been administered. Adverse sequelae (psychological, cognitive, or physical) were reported in one-third of cases.ConclusionsManagement of perioperative anaphylaxis could be improved, especially with respect to administration of epinephrine, cardiac compressions, and i.v. fluid. Sequelae were common.Copyright © 2018 British Journal of Anaesthesia. Published by Elsevier Ltd. All rights reserved.

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