What Researchers Did
Researchers retrospectively studied 52 patients with necrotizing otitis externa (NOE) -- a severe ear infection typically caused by Pseudomonas -- who were all referred for HBOT, investigating the importance of tissue biopsy for fungal infection.
What They Found
51.9% of patients underwent surgical debridement. Patients who required surgery had a significantly higher rate of fungal infection (p = 0.049). After 7 weeks of HBOT, the fungal-infected group showed significantly lower white blood cell counts (p = 0.03) and a trend toward lower CRP levels.
What This Means for Canadian Patients
Necrotizing otitis externa is a serious infection affecting immunocompromised Canadian patients, including those with uncontrolled diabetes. This study supports routine tissue biopsy to detect fungal infection, which changes treatment and may affect HBOT response. Canadian ENT surgeons and infectious disease specialists should incorporate this into management protocols.
Canadian Relevance
No direct Canadian connection identified.
Study Limitations
This was a retrospective study from a single center; the small fungal subgroup limits statistical power, and the 7-week HBOT protocol complicates direct attribution of outcomes.