Data Sources
Patient demographics, GPA organ involvement, induction IS utilised, investigations, surgical interventions and follow-up data were extracted from the Trust’s electronic records system.
The severity of stenosis was classified using the Cotton-Myer (C-M) classification system; an average subglottic diameter taken as 14mm and 17mm for females and males respectively.4
Relapses were defined as active inflammatory recurrence in the airway or recurrent SGS requiring further treatment, whilst remission was considered when a patent airway was maintained and no inflammatory recurrence seen.