Eosinophil, CT Measures Predict Smell Recovery CRSwNP Surgery
Summary of the Research Study on CRSwNP and Olfactory Recovery
This research study investigated whether incorporating eosinophil-derived markers (like ELR) with CT scan scores could better predict olfactory recovery in patients with Chronic Rhinosinusitis with Nasal Polyps (CRSwNP) following Functional Endoscopic Sinus Surgery (FESS).
Key findings:
* CRSwNP patients have higher inflammation: patients with CRSwNP had substantially higher levels of eosinophils (Eos), basophils (Baso), and eosinophil-derived markers (ELR) compared to healthy controls.
* FESS improves smell: Olfactory function,measured by the threshold-discrimination-identification score,improved in CRSwNP patients 6 months after FESS.The median betterment was 7 points.
* Severity of smell loss correlates with other conditions: patients with complete loss of smell (anosmia) where more likely to have allergic rhinitis, asthma, and atopy.
* Multiple factors differ between smell loss groups: Notable differences were found in symptom severity (VAS scores), quality of life (SNOT-22 scores), white blood cell count (WBC), eosinophil levels (Eos), ELR, and CT scan scores (Lund-Kennedy) between patients with normosmia, hyposmia, and anosmia.
* Potential for improved prediction: The study suggests that a model combining eosinophil-derived indicators with CT scores could be a convenient and effective way to predict olfactory function recovery. (as illustrated in the accompanying figure).
Study Details:
* Design: Single-center,retrospective cohort study.
* Participants: 137 CRSwNP patients (74% male, median age 40) and 52 healthy controls.
* Timeframe: January 2022 – June 2024.
significance:
The study highlights the importance of inflammation in CRSwNP and suggests that a more thorough assessment, including eosinophil markers and CT scans, could help predict which patients are most likely to benefit from FESS in terms of olfactory recovery.