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Prognostic scoring in necrotising otitis externa
M O Eveleigh1, C E J Hall, D L Baldwin
1Faculty of Medicine and Dentistry, University of Bristol, Bristol, United Kingdom. moeveleigh@doctors.org.uk
Objective:
To collect and analyse data from the published literature concerning the rare condition necrotising otitis externa, in order to formulate a prognostic scoring model based on signs and symptoms.
Design:
Retrospective data collection from published literature, and binary logistic regression analysis of the effect on outcome of identified signs and symptoms.
Results:
Six factors were identified as prognostic of a poorer outcome, including facial nerve involvement, additional cranial nerve involvement, non-cranial nerve neurological involvement, extensive granulations (or oedema) in the external auditory canal, bilateral symptoms and aspergillus species as the causative organism. A four-point scoring model based on these findings is presented.
Conclusions:
A novel, systematic method of data analysis was utilised to construct a prognostic scoring model for necrotising otitis externa. This will better equip clinicians to treat this potentially fatal condition.
