ArticleEcho research and practice2025
Development of a screening checklist to identify individuals with suspected allergy to polyethylene glycol.
Article in Echo research and practice, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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9 authors.
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Abstract
backgroundPolyethelene glycol (PEG) is a key component of several ultrasound enhancing agents (UEA) but has been recognized as contributing to anaphylactoid reactions, resulting in new contraindications to use in those with known or suspected PEG allergy. Despite these recommendations, no clinical tools currently exist to screen for those with suspected PEG-allergy in echocardiography laboratories.
methodsWe developed a screening survey to identify patients with potential PEG allergy and prospectively implemented it in a pilot study involving 8 patients with confirmed PEG allergy by skin prick testing and 50 prospectively enrolled patients undergoing clinically-indicated echocardiography without known PEG allergy, June - July 2025.
resultsAll patients completed the survey. A positive response to at least 2 of the first 4 questions on the screening survey had a sensitivity of 100% (95% CI 67.6-100%), specificity of 100% (95% CI 92.9-100%), positive predictive value of 100% (95% CI 67.6-100%), and a negative predictive value of 100% (95% CI 92.9-100%) to identify individuals with known PEG allergy.
conclusionsIn this pilot multicenter study, a brief screening survey identified all patients with proven allergy to PEG, suggesting possible utility to its use to identify those with potential PEG allergy who would benefit from a non-PEGylated UEA, though further clinical validation is needed.
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