“…Other details about this device have been described in recent studies. 21,22 In brief, the sensors were connected to the integrative unit to record the following parameters: oral/nasal airflow, snoring, arterial oxyhemoglobin saturation (SaO 2 ), pulse rate, and body position. Apneas were defined as a 75% reduction in airflow through the nose lasting for 10 seconds, and hypopneas were defined as < 75 % and 50% reduction in airflow accompanied by ≥ 3 % reduction in SaO 2 .…”