“…7,11 Whilst providing some data on the incidence and risks of OIRD in patients with ND, previous studies have been difficult to interpret owing to differences in study design, patient population, opioid drug, route, dosing and dosing frequency, monitoring practices, reporting 15 criteria and the lack of control groups. 3,9,15,16,37,38 A small retrospective cohort study by Long, Ved and Koh found no differences in the risk of 'clinically significant oxygen desaturation' (SpO 2 < 94%) between a group of children with (n=71) and without (n=77) cerebral palsy in the post-anesthesia care unit 9 whereas Chidambaran and others' case-control study, analysing 38 cases of naloxone administration to inpatients in a tertiary children's hospital reported risk factors <1 year, prematurity, OSA, obesity, underweight, and developmental delay. 16 How profound and what type of ND might greater predispose to RD is not known.…”