Abstract
Introduction:The goal of this project was to evaluate the impact of immunoglobulin E (IgE) levels on outcomes in patients with chronic rhinosinusitis (CRS) who received maximal medical therapy (MMT).Study Design:Prospective cohort study.Methods:Thirty-eight patients who underwent MMT for CRS were assigned to three different cohorts based on their IgE levels: low IgE (<25 IU), moderate (>25 to <149 IU), and high (≥150 IU). The primary outcome evaluated was MMT failure with a surgical recommendation within each IgE cohort. Secondary outcomes included changes in pre- and post-MMT scores for the Rhinosinusitis Disability Index, Chronic Sinusitis Survey, and computed tomography–based Lund-Mackay evaluation. The cohorts were substratified based on the presence of nasal polyps and nasal allergies.Results:No significant difference was found when MMT failure was compared between the cohorts in terms of quality of life. When substratified based on the presence of nasal polyps and nasal allergies, there was no significant difference between the cohorts. In the high-IgE cohort, all patients regardless of presence of nasal polyps and nasal allergic disease, frequently failed MMT and were recommended for surgery.Conclusions:Overall, IgE levels did not seem to have a significant effect on the quality of life or outcomes of MMT in the patients with CRS. However, the presence of nasal allergies regardless of IgE levels seemed to result in more frequent recommendations for surgery after MMT. In the patients with higher-IgE levels (≥150 IU), MMT seemed to fail at high rates with or without the presence of polyps or allergic disease.
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