Sleep Apnea, CentralSleep Apnea SyndromesSleep Apnea, ObstructivePolysomnographyCheyne-Stokes RespirationContinuous Positive Airway PressureSleepPositive-Pressure RespirationSnoringHeart FailureRespirationUvulaParotid GlandSleep, REMCarbon DioxideSeverity of Illness IndexAdenoidectomyTonsillectomySleep DisordersHypercapniaMandibular AdvancementDisorders of Excessive SomnolencePalate, SoftOxygen Inhalation TherapySyndromeOxygenPharynxAdenoidsWakefulnessTreatment OutcomeSleep StagesPharyngeal MusclesProspective StudiesStroke VolumeOximetryFollow-Up StudiesTongueOrthodontic Appliances, RemovableMouth BreathingNasal ObstructionAnoxiaAirway ObstructionBody Mass IndexArousalOropharynxCircadian RhythmAirway Resistance