Angelo Canora1, Adriana Franzese2, Enza Mozzillo2, Valentina Fattorusso2, Marialuisa Bocchino3, Alessandro Sanduzzi3. 1. Section of Respiratory Disease, Department of Clinical Medicine and Surgery, Monaldi Hospital, University "Federico II" Naples, Via Leonardo Bianchi, 80131, Naples, Italy. a.canora@hotmail.it. 2. Departments of Translational and Medical Sciences, University "Federico II" Naples, Naples, Italy. 3. Section of Respiratory Disease, Department of Clinical Medicine and Surgery, Monaldi Hospital, University "Federico II" Naples, Via Leonardo Bianchi, 80131, Naples, Italy.
Abstract
Sleep-related disordered breathing (SDB) is very common in paediatric patients affected by Prader-Willi Syndrome (PWS). However, data addressing SBD patterns and their management are lacking. The aim of the present study was to analyse SDB features in 14 PWS patients (age range, 8 months-17 years). Polygraphic registration (PG) during a 12-h nocturnal sleep was performed in all patients. Obstructive and central apnoea indices and oxygen saturation (SpO2) were recorded along with demographic and clinical data. Obstructive sleep apnoea (OSA) was diagnosed in 13/14 patients (92.9%); the mean obstructive apnoea-hypopnea index (OAHI) was 7.6 ± 4.2 events/h with a mean central apnoea index (CAI) of 0.7 ± 1.04 events/h. Time spent with SpO2 < 90% was of 0.02% [range 0-23%], with a mean oxygen desaturation index of 12.1 ± 6.9 events/h. No correlation was found between OAHI and body mass index (mean BMI 28 ± 9.8 kg/m2 and BMI z-score 2.7 ± 1.7). CONCLUSION: OSA was the predominant sleep-related disorder in our PWS patients, not associated with age or obesity, and appeared more severe than previously reported. Further studies addressing the underlying mechanisms are necessary in larger study populations to better design the most appropriate clinical approach. What is Known: • Sleep-related patterns and their management are very limited in patients with Prader-Willi syndrome. What is New: • Severe obstructive sleep apnoea is the most frequent sleep-related disorder in our case series.
Sleep-related disordered breathing (SDB) is very common in paediatric patients affected by Prader-Willi Syndrome (PWS). However, data addressing SBD patterns and their management are lacking. The aim of the present study was to analyse SDB features in 14 PWSpatients (age range, 8 months-17 years). Polygraphic registration (PG) during a 12-h nocturnal sleep was performed in all patients. Obstructive and central apnoea indices and oxygen saturation (SpO2) were recorded along with demographic and clinical data. Obstructive sleep apnoea (OSA) was diagnosed in 13/14 patients (92.9%); the mean obstructive apnoea-hypopnea index (OAHI) was 7.6 ± 4.2 events/h with a mean central apnoea index (CAI) of 0.7 ± 1.04 events/h. Time spent with SpO2 < 90% was of 0.02% [range 0-23%], with a mean oxygen desaturation index of 12.1 ± 6.9 events/h. No correlation was found between OAHI and body mass index (mean BMI 28 ± 9.8 kg/m2 and BMI z-score 2.7 ± 1.7). CONCLUSION: OSA was the predominant sleep-related disorder in our PWSpatients, not associated with age or obesity, and appeared more severe than previously reported. Further studies addressing the underlying mechanisms are necessary in larger study populations to better design the most appropriate clinical approach. What is Known: • Sleep-related patterns and their management are very limited in patients with Prader-Willi syndrome. What is New: • Severe obstructive sleep apnoea is the most frequent sleep-related disorder in our case series.
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