Summary Propofol is the most commonly administered intravenous agent for anaesthesia in children. However, there are concerns that the emulsified preparation may not be safe in children with an allergy to egg, peanut, soybean or other legumes. We conducted a retrospective study of children with immunologically confirmed egg, peanut, soybean or legume allergy and who underwent general anaesthesia at Princess Margaret Hospital for Children between 2005 and 2015. We extracted details regarding allergy diagnosis, each anaesthetic administered and any adverse events or signs of an allergic reaction in the peri‐operative period. A convenience sample of patients without any known food allergies was identified from our prospective anaesthesia research database and acted as a control group. We identified 304 food‐allergic children and 649 procedures where propofol was administered. Of these, 201 (66%) had an egg allergy, 226 (74%) had a peanut allergy, 28 (9%) had a soybean allergy and 12 (4%) had a legume allergy. These were compared with 892 allergy‐free patients who were exposed to propofol. In 10 (3%) allergy patients and 124 (14%) allergy‐free patients, criteria for a possible allergic reaction were met. In nine of the food‐allergic children and in all the controls valid non‐allergic explanations for the clinical symptoms were found. One likely mild allergic reaction was experienced by a child with a previous history of intralipid allergy. We conclude that genuine serious allergic reaction to propofol is rare and is not reliably predicted by a history of food allergy.
Summary Background and aim Pediatric patients increasingly report allergies, including allergies to food and medications. We sought to determine the incidence and, nature of parent‐reported allergies in children presenting for surgery and its significance for anesthetists. Methods We prospectively collected data on admissions through our surgical admission unit over a 2‐month period at a pediatric tertiary care teaching hospital. Data collected included patient demographics, history of atopy, with more comprehensive information collected if an allergy was reported. A clinical immunologist and an anesthetist reviewed the documentation of all patients reporting an allergy. Results We reviewed 1001 pediatric patients, 158 (15.8%) patients with parent‐reported allergies; to medications/drugs (n = 73), food (n = 66), environmental allergens (dust/grasses, n = 35), tapes/dressings (n = 27), latex (n = 4), and venom (eg, bee, wasp, n = 9). Forty‐one patients reported antibiotic allergies, with Beta‐lactam antibiotics being the most common, with the majority presenting with rash alone (57%). Ten patients reported allergies to nonsteroidal anti‐inflammatory drugs and eight to opioids. Twenty‐four patients reported egg and/or peanut allergy. Only 3/1001 (0.3%) patients were deemed to have evidence of likely IgE‐mediated drug allergy. Of the reported allergies, only 60 (38.2%) had been investigated prior, most likely to be followed up were food (53%) and environmental allergies (44.4%). Only 4/73 (5.5%) reported medication allergies had further follow‐up. Just four patients (0.4% of the entire cohort) had drug sensitivities/allergies that were likely to majorly alter anesthesia practice. Conclusion Only the minority of parent‐reported allergies in pediatric surgical patients were specialist confirmed and likely to be clinically relevant. Self‐reported food allergy is commonly specialist verified whereas reactions to medications were generally not. Over‐reporting of allergies is increasingly common and limits clinician choice of medications. Better education of patients and their families and more timely verification or dismissal of parent‐reported reactions is urgently needed.
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