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. 2017 Jan 14;25(1):4.
doi: 10.1186/s13049-016-0344-y.

Pre-hospital treatment of bee and wasp induced anaphylactic reactions: a retrospective study

Athamaica Ruiz Oropeza  1 , Søren Mikkelsen  2 , Carsten Bindslev-Jensen  3 , Charlotte G Mortz  3
Affiliations

Pre-hospital treatment of bee and wasp induced anaphylactic reactions: a retrospective study

Athamaica Ruiz Oropeza et al. Scand J Trauma Resusc Emerg Med. .

Abstract

Background: Bee and wasp stings are among the most common triggers of anaphylaxis in adults representing around 20% of fatal anaphylaxis from any cause. Data of pre-hospital treatment of bee and wasp induced anaphylactic reactions are sparse. This study aimed to estimate the incidence of bee and wasp induced anaphylactic reactions, the severity of the reactions and to correlate the pre-hospital treatment with the severity of the anaphylactic reaction.

Methods: Retrospective and descriptive study based on data from the Mobile Emergency Care Units (MECUs) in the Region of Southern Denmark (2008 only for Odense and 2009-2014 for the whole region). Discharge summaries with diagnosis related to anaphylaxis according to the International Classification of Diseases 10 (ICD-10) were reviewed to identify bee and wasp induced anaphylactic reactions. The severity of the anaphylactic reaction was assessed according to Sampson's severity score and Mueller's severity score. Treatment was evaluated in relation to administration of adrenaline, glucocorticoids and antihistamine.

Results: We identified 273 cases (Odense 2008 n = 14 and Region of Southern Denmark 2009-2014 n = 259) of bee and wasp induced anaphylaxis. The Incidence Rate was estimated to 35.8 cases per 1,000,000 person year (95% CI 25.9-48.2) in the Region of Southern Denmark during 2009-2014. According to Sampson's severity score, 65% (n = 177) of the cases were graded as moderate to severe anaphylaxis (grade 3-5). Almost one third of cases could not be graded according to Mueller's severity score. Adrenaline was administrated in 54% (96/177) of cases with moderate to severe anaphylaxis according to Sampson's severity score, compared to 88% receiving intravenous glucocorticoids (p < 0.001) and 91% receiving intravenous antihistamines (p < 0.001). Even in severe anaphylaxis (grade 5) adrenaline was administered in only 80% of the cases.

Conclusion: Treatment with adrenaline is not administered in accordance with international guidelines. However, making an assessment of the severity of the anaphylactic reaction is difficult in retrospective studies.

Keywords: Anaphylaxis; Pre-hospital treatment; Severity.

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Figures

Fig. 1
Fig. 1
Flow diagram of patients with bee and wasp induced anaphylactic reaction attended by the MECU during 2008-2014
Fig. 2
Fig. 2
Severity of the anaphylactic reaction evaluated by Sampson’s severity score (a) and Mueller’s severity score (b) (n = 273)
Fig. 3
Fig. 3
Treatment administrated by the MECU in relation to the severity of the anaphylactic reaction
See this image and copyright information in PMC

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