O047 Sleep quality and fatigue in children and adolescents with multiple sclerosis

BACKGROUND: Fatigue is common in children and adolescents with multiple sclerosis (MS) and its aetiology is assumed to be multifactorial, however, its relationship to sleep quality in this population remains unknown. This study aims to examine the prevalence of fatigue and sleep disturbance in this population and their relationship to mood, quality of life, physical activity, and MS disease characteristics. METHODS: Children with pediatric onset multiple sclerosis (POMS) aged 0–18 were recruited. Subjective sleep quality was assessed by the Pediatric Daytime Sleepiness Scale (PDSS), Sleep Disturbance Scale for Children (SDSC) and OSA-18. All children were referred for polysomnography (PSG) including transcutaneous CO2 and video monitoring. Fatigue was assessed using the PedsQL Multidimensional Fatigue Scale (PedsQL-MFS). Progress to date: Fifteen children with relapsing remitting MS (mean age 15.73±1.44, mean EDSS score 1.11±1.12) have been enrolled to date. 73% of children were fatigued according to the PedsQL-MFS (mean transformed score 52.04). 67% and 60% of children scored higher than the clinical cutoff for the PDSS (17.87) and SDSC (42.73) respectively. However, all children scored within the normal range for the OSA-18 (34.00). To date, eleven children have completed PSG. Intended outcome and impact: This is the first study utilising PSG to objectively assess sleep quality in children with POMS. Findings from this study will document the magnitude of sleep disturbance in this population and have implications for the management of fatigue and other related impairments observed in paediatric MS.