Allergy and asthma proceedings :
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Allergy Asthma Proc · Nov 2012
Randomized Controlled Trial Comparative StudyEffect of epinephrine autoinjector design on unintentional injection injury.
Epinephrine is an essential medication for the treatment of anaphylaxis. Factors associated with autoinjector design may have a role in its correct use. We compared a new and old epinephrine autoinjector with respect to correct autoinjector use. ⋯ Significantly fewer participants had unintentional injections in the new compared with the old epinephrine autoinjector group (p < 0.001). When all assessment steps are considered, only the rate of placing a wrong tip into the outer thigh was significantly lower in the new compared with the old epinephrine autoinjector group (p < 0.05). The new epinephrine autoinjector is more effective in unintentional injection injuries than the old one; however, it still does not fulfill the criteria of an ideal epinephrine autoinjector.
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Allergy Asthma Proc · Nov 2012
Clinical and laboratory factors associated with negative oral food challenges.
Children with food-specific IgE (FSIgE) ≤2 kUa/L to milk, egg, or peanut (or ≤5kUa/L to peanut without history of previous reaction) are appropriate candidates for oral food challenge (OFC) to investigate resolution of food allergy, because these FSIgE cutoffs are associated with ∼50% likelihood of negative OFC. This study was designed to identify characteristics of children undergoing OFC, based on these FSIgE levels, who are most likely to show negative OFC. We collected demographics, severity of previous reaction, history of atopic diseases, total IgE and FSIgE values, and skin tests results on children who underwent OFCs to milk, egg, or peanut, based on the recommended FSIgE cutoffs. ⋯ Combinations of these factors identified subgroups of children with proportions of negative OFCs of 83, 75, and 75% for milk, eggs, and peanuts, respectively. Combinations of clinical and laboratory elements, together with FSIgE values, might identify more children who are likely to have negative OFCs compared with current recommendations using FSIgE values alone. Once validated in a different population, these factors might be used for selection of patients who are most likely to show negative OFCs.
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Allergy Asthma Proc · Jul 2012
Multicenter Study Clinical TrialTreatment response after repeated administration of C1 esterase inhibitor for successive acute hereditary angioedema attacks.
Placebo-controlled studies established the efficacy of replacement therapy with C1 esterase inhibitor (C1-INH) concentrate for treating single acute hereditary angioedema (HAE) attacks, but only limited data from prospective studies are available on repeated treatment of successive HAE attacks. This study evaluates the association between repeated treatments with 20 U/kg of C1-INH concentrate (Berinert; CSL Behring, Marburg, Germany) for HAE attacks at any body location and treatment response. In a post hoc analysis of an open-label extension study (International Multicenter Prospective Angioedema C1-INH Trial [I. ⋯ The distribution of body locations and the intensity of HAE attacks were similar for each of the first 15 attacks and subsequent attacks. The extent of previous use of C1-INH concentrate had no effect on the time to onset of symptom relief, the time to complete resolution of HAE symptoms, or the time between attacks treated with C1-INH concentrate; the median of individual linear regression coefficients was not statistically significantly different from 0. Treatment with 20 U/kg of C1-INH concentrate provided consistent treatment response in patients treated for multiple successive HAE attacks at any body location. (Clinicaltrials.gov identifier: NCT00292981).
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Allergy Asthma Proc · Mar 2012
Ecallantide for treatment of acute hereditary angioedema attacks: analysis of efficacy by patient characteristics.
Hereditary angioedema (HAE) is characterized by episodic attacks of edema. HAE is caused by low levels of the protein C1 esterase inhibitor, which inhibits plasma kallikrein, the enzyme responsible for converting high-molecular-weight kininogen to bradykinin. Unregulated production of bradykinin leads to the characteristic clinical symptoms of swelling and pain. ⋯ Ecallantide showed efficacy for treatment of severe and moderate attacks, and was effective for abdominal, internal head and neck, external head and neck, and cutaneous locations. In summary, ecallantide is effective for treatment of acute HAE attacks of different symptom locations and severity; outcomes were similar for men and women. However, the standard dose was less effective for obese patients.
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Allergy Asthma Proc · Mar 2012
Case ReportsThe importance of vancomycin in drug rash with eosinophilia and systemic symptoms (DRESS) syndrome.
Drug rash with eosinophilia and systemic symptoms (DRESS) syndrome characterized by fever, rash, eosinophilia, atypical lymphocytes, and multiorgan involvement has a significant mortality. Inpatient vancomycin use is increasing and appears to be emerging as an important etiology of DRESS syndrome. This study highlights the importance of vancomycin as a cause of DRESS syndrome. ⋯ Causative agents for DRESS syndrome in an inpatient setting is likely different from that seen in the general population. With increasing use of vancomycin, we are likely to see more cases of DRESS syndrome caused by vancomycin. Recognition of vancomycin as a common cause of inpatient DRESS syndrome is important.