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Rhinology/Allergy

(059) Bacteriology of Geriatric Rhinosinusitis with and Without Nasal Polyps

Monday, October 2, 2023
2:45 PM – 3:45 PM East Coast USA Time

    Presenting Author(s)

  • Rong-San Jiang, MD

    Chairman, Department of Medical Research
    Taichung Veterans General Hospital (TCVGH)
    Taichung, TWN

    • Co-Author(s)

  • Kai-Li Liang, MD

    Director, Division of Rhinology, Department of Otolaryngology
    Taichung Veterans General Hospital
    Taichung, TWN

Introduction: Bacteria have been considered to play important roles in the pathogenesis of chronic rhinosinusitis (CRS). Bacteriology of geriatric rhinosinusitis has rarely been studied. In this study, we attempted to compare the nasal bacteriology between geriatric CRS patients with and without nasal polyps and adult CRS patients with and without nasal polyps.

Methods: CRS Patients who underwent primary bilateral functional endoscopic sinus surgery were enrolled. Prior to surgery, the severity of each patient’s CRS was evaluated through an endoscopic examination and CT scan. Swab samples were collected from the middle meatus for bacterial cultures using cotton-tipped sticks. The scope scores, CT scores and culture rates were compared between geriatric and adult patients and between CRS with and without nasal polyps in both geriatric and adult populations.

Results: There were 693 CRS patients included in this study from September of 2005 to December of 2022. There were 60 geriatric patients (age> 65 years old) and 633 adult patients (age ranging from 20 to 64 years old). Among 60 geriatric CRS patients, nasal polyps were present in 55 sides of nasal cavities and absent in the other 65 sides. Among 633 adult CRS patients, nasal polyps were present in 456 sides of nasal cavities and absent in the other 810 sides. In geriatric patients, the rate of bacterial growth was not different between sides with nasal polyps and sides without nasal polyps, but in adult patients, the rate of bacterial growth was significantly higher for sides with nasal polyps than sides without nasal polyps. On the other hand, the rate of bacterial growth in sides of nasal polyps was not different between geriatric and adult patients, but the rate of bacterial growth in sides without nasal polyps was significantly higher for geriatric than adult patients.

Conclusions: This study showed that bacteria grew more frequently in geriatric CRS patients than adult patients, especially for sides of nasal cavities without nasal polyps. It implied that bacteria play a more important role in the pathogenesis of geriatric CRS than adult CRS.