“…Weakness of respiratory muscles usually evolves in crescendo in adolescence, but at an early stage, mainly if obesity or adenotonsillar enlargement is associated, OSA may appear and a respiratory support may be needed. 17,21 In our series, NIV technique was used in a higher percentage than in most of other reports (26---97%). 3,4,12,14,15 The major advantages of NIV, compared to invasive technique with tracheostomy, include greater patient comfort, simpler application, use and care, reduced incidence of complications 7 and higher survival rates.…”