Anaesthesia for children with surgical revision of bleeding tonsils is one of the most challenging situations in paediatric anaesthesia. In these situations, a classical rapid sequence induction using muscle paralysis with succinylcholine, cricoid pressure and apnoea until the airway has been secured by a tracheal tube is the most common approach. 2 There has so far been only one published retrospective study reporting on 575 anaesthetic managements in children scheduled for surgical revision of bleeding tonsils. 3 The most common adverse event in that study was hypoxaemia, with 9.9% in total and a 3% incidence during rapid sequence induction and intubation (RSII); difficult intubation was the next most common, occurring in 2.7% of patients. The latter

Background: Appropriate size selection of pediatric rigid bronchoscopes is fundamental to avoidance of airway trauma and to a high success rate with the first intubation attempt. The aim of the present study was to compare the outer diameters of pediatric rigid bronchoscopes with the anatomical data on the pediatric airway.