osteotomy, MAO (maxillomandibular advancement osteotomy), MAS (mandibular advancement splint ), mask leak, mask, mastoid, maxillomandibular surgery,
medroxyprogesterone, melatonin, Mflo (mask flo channel), micrognathia, midline glossectomy, midline laser glossectomy (MLG), MISSMLS (minimally invasive single-
staged multilevel surgery), MLG (midline laser glossectomy), MMA (maxillomandibular advancement), MMOA (maxillar & mandibular advancement osteotomy and
advancement), MO2/MO (minimal oxygen saturation), modafinil, modified UPPP,
monitoring, Moore, morbidity, mortality, motor atonia, mouth leak, mouth-breathing,
MRA (mandibular repositioning appliance), MSH (melanocyte stimulating hormone), NSL (mean sleep onset latency), MSLT (multiple sleep latency test or a series of
measurements of the interval - from “lights out” to sleep onset), MM (Müller maneuver), multi-channel, multifactorial diseases, multilevel anatomical abnormalities, multilevel surgery, multiple airway obstruction, muscle tone, MWT (maintenance of wakefulness
test), myasthenia gravis, myoclonus, myofunctional therapy, nap (a short sleep episode), narcolepsy, narcolepsy tetrad (EDS, cataplexy, hypnogogic hallucination and sleep paralysis), narcolepsy type-1, narcolepsy type-2, nasal continuous positive airway
pressure (nasal CPAP), nasal airflow, nasal CPAP (continuous positive airway pressure), nasal mask, nasal pillow, nasal pressure transducers, nasal strips, nasal valve collapse, nasion, nasopharyngolaryngoscopy, nasopharyngoscopy, neck circumference, neurologic, neuropathy, night shift, night terror, NIMV (non-invasive mechanical ventilation), NIPPV (non-invasive positive pressure ventilation), nocturia, nocturnal angina, nocturnal desaturation, nocturnal dyspnea, nocturnal enuresis, nocturnal hypoxemia, nocturnal oximetry, nocturnal penile tumescence, nocturnal pulse oximetry, nocturnal seizure, nocturnal sleep-related eating disorder, non-adherence to CPAP, non-hypercapnic CSA, non-REM sleep, notch filter, NPD (nocturnal paroxysmal dystonia), NREM sleep (non-
rapid eye movement sleep), NPY (neuropeptide Y - a neurohormone as a
neuromodulator), NREM sleep intrusion, NREM sleep physiology (some components are elevated EMG, K complex, sleep spindle, delta waves), NREM/non-REM (non-rapid eye movement), NSF (National Sleep Foundation), NPSG (nocturnal PSG), O (occipital), OA (obstructive apnea), obesity hypoventilation syndrome (OHS), ODI (oxygen desaturation index), oral appliances, obesity, observation scales manifest sleepiness, OSAHS
(obstructive sleep apnea-hypopnea syndrome), OSAS (obstructive sleep apnea
syndrome), occulography, OCT (out-of-center sleep testing), OH (obstructive hypopnea), OHS (obesity hypoventilation syndrome i.e. obese patients with hypoventilation during wakefulness), Ondine’s curse, oral appliances, oral mask, oropharyngeal, oropharynx,
OSA (obstructive sleep apnea), OSAH (obstructive sleep apnea-hypopnea), ossillograph, outer canthus, oximeter, oxygen desaturation, oxygen saturation, out-of-center sleep testing (OCT/OCST), Oz (inion on EEC mapping), P (parietal), palatal implants,
palatoplasty, PAP (positive airway pressure), PAP therapy (positive airway pressure therapy), PAP-associated changes, paradoxical insomnia, paradoxical sleep, parasomnias (disorders of arousal, partial arousal or sleep-stage transition e.g. NREM-related parasomnias), REM-related parasomnias, paroxysmal nocturnal dyspnea, partial glossectomy, pathogenesis, pathologic sleep, pathophysiology, patient questionnaire, patient-related factors, PB (periodic breathing), PaCO2 (arterial partial pressure of carbon dioxide), Pcrit = critical closing pressure, pediatric airway reconstruction, pediatric
airway, pediatric obstructice sleep apnea, pediatric sleep apnea, pediatric sleep
endoscopy, pediatric sleep medicine, percutaneous submucosal glossectomy, periodic breathing, Ph (pulmonary hypertension), pharmacologic/ pharmacological therapy, pharyngoplasty, PI (pillar implantation), phase advance, Pickwickian Syndrome (old term
for “obesity, hypersomnolence, periodic breathing with alveolar hypoventilation), Pierre-Robin syndrome, pillar implantation (PI), Pittsburgh Sleep Quality Index (PSQI), PLM (periodic leg movement), PLM (periodic limb movement), PLMD (periodic limb movement disorder), PLMI (periodic limb movement index), PLMS (periodic limb movement during sleep), PM/PSM (portable sleep monitoring), PMS (periodic movements of sleep),
pneumonic respiration transducer, polycyclic, portable monitor, positional therapy,