Federica Trucco1,2, Michelle Chatwin3, Thomas Semple4, Mark Rosenthal1, Andrew Bush1,5, Hui-Leng Tan1. 1. Department of Pediatric Respiratory Medicine, Royal Brompton Hospital, London, United Kingdom. 2. Pediatric Neurology and Muscle Disease Unit, Istituto Giannina Gaslini, Genova, Italy. 3. Academic and Clinical Department of Sleep and Breathing and NIHR Respiratory Biomedical Research Unit, Royal Brompton & Harefield NHS Foundation Trust, London, United Kingdom. 4. Department of Radiology, Royal Brompton Hospital, London, United Kingdom. 5. National Heart and Lung Institute, Imperial College, London, United Kingdom.
Abstract
STUDY OBJECTIVES: Obstructive sleep apnoea (OSAS) in children with Down syndrome (DS) is now well recognized, but other forms of sleep disordered breathing (SDB) in this population are less well described. Anecdotally, respiratory support for SDB treatment in this population is not easily tolerated. We aimed to characterize the types of SDB in children with DS referred to a tertiary respiratory center and to assess the effectiveness and adherence to respiratory support. METHODS: Retrospective study of DS patients <18 years old under follow-up at a tertiary respiratory center. Anthropometrics, comorbidities, sleep study results, and details of respiratory support were collected. Satisfactory adherence to oxygen (O2 ), Continuous Positive Airway Pressure (CPAP), or bilevel noninvasive ventilation (NIV) was defined as use >4 h/night for >50% nights. RESULTS: Sixty patients were included, median age 1.5 (0.7-5.3) years; 49 (82%) had congenital heart disease, 16 (27%) pulmonary hypertension, 28 (47%) gastroesophageal reflux, 38 (63%) swallowing impairment; 16/17 who underwent CT scanning had evidence of aspiration. Forty-two had SDB: 27 (61%) OSAS (10 mild, 5 moderate, 12 severe), 11 (25%) central apnoeas, 19 (32%) nocturnal hypoventilation. Twenty-six had baseline saturations <95%. Lower SpO2 correlated with pulmonary hypertension (r2 = 0.1, P = 0.04). Thirty-nine (65%) patients started respiratory support (14 O2 , 18 CPAP, 7 NIV) and 22 (56%) have regularly used it. After a 1.9 years follow up 11/24 had satisfactory adherence to CPAP/NIV (average use 8 h/night). CONCLUSIONS: Our results confirm the high prevalence of OSAS in children with DS. A significant number also have low baseline saturations, central apnoeas, and nocturnal hypoventilation. Contrary to popular belief, more than half of children with DS had satisfactory adherence to respiratory support.
STUDY OBJECTIVES: Obstructive sleep apnoea (OSAS) in children with Down syndrome (DS) is now well recognized, but other forms of sleep disordered breathing (SDB) in this population are less well described. Anecdotally, respiratory support for SDB treatment in this population is not easily tolerated. We aimed to characterize the types of SDB in children with DS referred to a tertiary respiratory center and to assess the effectiveness and adherence to respiratory support. METHODS: Retrospective study of DS patients <18 years old under follow-up at a tertiary respiratory center. Anthropometrics, comorbidities, sleep study results, and details of respiratory support were collected. Satisfactory adherence to oxygen (O2 ), Continuous Positive Airway Pressure (CPAP), or bilevel noninvasive ventilation (NIV) was defined as use >4 h/night for >50% nights. RESULTS: Sixty patients were included, median age 1.5 (0.7-5.3) years; 49 (82%) had congenital heart disease, 16 (27%) pulmonary hypertension, 28 (47%) gastroesophageal reflux, 38 (63%) swallowing impairment; 16/17 who underwent CT scanning had evidence of aspiration. Forty-two had SDB: 27 (61%) OSAS (10 mild, 5 moderate, 12 severe), 11 (25%) central apnoeas, 19 (32%) nocturnal hypoventilation. Twenty-six had baseline saturations <95%. Lower SpO2 correlated with pulmonary hypertension (r2 = 0.1, P = 0.04). Thirty-nine (65%) patients started respiratory support (14 O2 , 18 CPAP, 7 NIV) and 22 (56%) have regularly used it. After a 1.9 years follow up 11/24 had satisfactory adherence to CPAP/NIV (average use 8 h/night). CONCLUSIONS: Our results confirm the high prevalence of OSAS in children with DS. A significant number also have low baseline saturations, central apnoeas, and nocturnal hypoventilation. Contrary to popular belief, more than half of children with DS had satisfactory adherence to respiratory support.
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