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Πέμπτη 4 Μαρτίου 2021

The Sinonasal Outcome Test (SNOT-22) Is a Poor Diagnostic Tool for Chronic Rhinosinusitis

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Ann Otol Rhinol Laryngol. 2021 Mar 4:3489421998213. doi: 10.1177/0003489421998213. Online ahead of print.

ABSTRACT

BACKGROUND: The SNOT-22 is a validated and widely used outcomes tool in chronic rhinosinusitis (CRS). We hypothesized that SNOT-22 scores and response patterns could be used as a diagnostic tool to differentiate between patients with CRS and those who present with CRS-like symptoms but prove not to have CRS.

METHODOLOGY/PRINCIPAL: SNOT-22 measurements were collected from 311 patients who presented with a chief complaint of sinusitis to a tertiary rhinology practice. Following a full diagnostic evaluation, patients were diagnosed with CRS or determined to have non-CRS diagnoses. A response pattern "heatmap" of the SNOT-22 scores for each group was compared. An optimal cutoff point for total SNOT-22 score in predicting CRS was sought using a receiver operating characteristic (ROC) curve.

RESULTS: A total of 109 patients were diagnosed with CRS and 202 patients were assigned to non-CRS. The non-CRS SNOT-22 total score histogram had lower overall scores compared to the CRS group, although there was substantial overlap. The CRS SNOT-22 heatmaps had a distinctive pattern compared to the non-CRS group. As individual measures, 3 of the 4 cardinal symptoms of CRS (nasal congestion, loss of smell, and rhinorrhea) were found to be significantly different between the 2 groups (P < .002). However, the ROC analysis showed the total SNOT-22 score to be a poor instrument to differentiate CRS from non-CRS patients.

CONCLUSIONS: Our results cause us to reject our hypothesis and conclude that, while an effective outcomes tool, the SNOT-22 (using total score and response pattern) is a poor differentiator between CRS and non-CRS patients.

PMID:33657861 | DOI:10.1177/0003489421998213

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