Observational studyInternational forum of allergy & rhinology2021
Ethmoid-to-maxillary opacification ratio: a predictor of postoperative olfaction and outcomes in nasal polyposis?
Observational study in International forum of allergy & rhinology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 2 of them syntheses that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
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Who cites it
6 citing papers in PubMed, 2 syntheses or guidelines pooled it, 13 citations in OpenAlex.
- Dupilumab Extended Interval Dosing in Chronic Rhinosinusitis With Nasal Polyps: A Systematic Review and Meta-analysis.Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery · 2026Pooled it
- Biologics and Surgery in Chronic Rhinosinusitis With Nasal Polyps: A Comparative Outcomes Analysis.American journal of rhinology & allergy · 2025Pooled it
- Importance of Smell Loss to Patients With Chronic Rhinosinusitis With Nasal Polyps: Options for Management and Recovery.Clinical and translational allergy · 2026Review
- Recurrence of Chronic Rhinosinusitis with Nasal Polyps After Surgery: Risk Factors, Predictive Models, and Treatment Approaches with a Focus on Western and Asian Differences.Medicina (Kaunas, Lithuania) · 2025Review
- The impact of highly effective modulator therapy on sinusitis and dysosmia in young children with cystic fibrosis: a prospective study protocol.ERJ open research · 2025Article
- Review
Corrections and comments
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Authors and funding
8 authors at 4 institutions in 1 country.
Funding
Abstract
backgroundInflammatory profiles for patients with chronic rhinosinusitis with nasal polyposis (CRSwNP) vary between North American and Asian populations. An elevated ethmoid-to-maxillary (E/M) opacification ratio on preoperative imaging is associated with certain postoperative outcomes in Asian populations and populations that are non-type 2 dominant. In this study we explore this factor in North American/type 2-based populations.
methodsAdult patients (n = 165) from a North American population with CRSwNP who underwent endoscopic sinus surgery (ESS) were prospectively enrolled into an observational, multi-institutional study. The 22-item Sino-Nasal Outcome Test (SNOT-22), Brief Smell Identification Test (BSIT), and Lund-Kennedy (LK) endoscopic scores were obtained pre- and postoperatively. Patients were stratified according to increasing E/M ratios based on Lund-Mackay (LM) scores.
resultsOn average, significant within-subject postoperative improvement was found in all patients for SNOT-22 total and domain scores, and also BSIT results (p ≤ 0.019). Preoperatively, elevated E/M ratio correlated with worse BSIT scores (r = -0.343, p < 0.001). Postoperatively, elevated E/M ratio correlated with BSIT improvement (r = 0.284, p = 0.002), but did not correlate with SNOT-22 improvement or polyp recurrence. An elevated E/M ratio was associated with greater likelihood of reporting a minimal clinically important difference in BSIT scores (χ
conclusionElevated E/M ratios were found to associated with worse baseline olfaction and an increased likelihood of achieving a clinically meaningful postoperative improvement in olfaction in this North American population with CRSwNP. Elevated E/M ratios did not predict postoperative changes in SNOT-22 measures or polyp recurrence. This suggests that prognostic factors may vary according to geography and generalized inflammatory profiles (type 2 vs non-type 2) in patients with CRS.
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