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Title: What clinical factors are associated with biphasic anaphylaxis in Thai adult patients?
Authors: Pungkava Sricharoen
Yuwares Sittichanbuncha
Arrug Wibulpolprasert
Ekkapong Srabongkosh
Kittisak Sawanyawisuth
Mahidol University
Khon Kaen University
Keywords: Immunology and Microbiology;Medicine
Issue Date: 1-Jan-2015
Citation: Asian Pacific Journal of Allergy and Immunology. Vol.33, No.1 (2015), 8-13
Abstract: © 2015,Allergy and Immunology Society of Thailand. All rights reserved. Background: Anaphylaxis is an emergency condition and may be fatal. Approximately 20% of patients with anaphylaxis may develop recurrent episodes of anaphylaxis within 72 hours or biphasic anaphylaxis. The severity of biphasic anaphylaxis can be either more or less severe than the first episode. Knowledge of factors associated with biphasic anaphylaxis in particular in Asian populations is still limited. Objectives: To study predictors for biphasic anaphylaxis in Thai patients at the Emergency Department (ED). Methods: All consecutive patients diagnosed as anaphylaxis at the ED, Ramathibodi Hospital, Mahidol University, Bangkok were enrolled. The study was prospectively conducted from January to December 2011. Patients were divided into two groups; uniphasic and biphasic anaphylaxis. Multivariate logistic regression was used to identify factors associated with biphasic anaphylaxis. Results: During the study period, there were 63 patients diagnosed with anaphylaxis at the ED. Of those, 16 patients were excluded due to incomplete clinical data in regards of diagnosis or treatment of anaphylaxis, concomitant medications or pre hospital treatment. In total, there were 47 patients remaining in the study, including 10 patients with biphasic anaphylaxis (21.28%). The clinical characteristics of the uniphasic and biphasic anaphylaxis groups were comparable. In multivariate logistic regression analyses, only respiratory rate and abdominal pain were significantly associated with biphasic anaphylaxis. The adjusted ORs (95% CI) of both factors were 0.653 (0.457, 0.932) and 15.429 (1.395, 170.690), respectively. Conclusion: Reduced respiratory rate and the presence of abdominal pain were two significant factors associated with biphasic anaphylaxis.
ISSN: 22288694
Appears in Collections:Scopus 2011-2015

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