ambulatory sleep study, androgens, anesthetics, anterior palatoplasty, anterior tibialis,
anxiolytics, APAP (adjustable-positive airway pressure), apnea (cessation of airflow at
the nostrils and mouth lasting at least 10 seconds), apnea types (obstructive, central,
and mixed), apnea index (average number of apneas per hour of sleep), apnea-hypopnea index (AHI i.e. number of apneas plus hypopneas per hour of total sleep time as
determined by all-night polysomnography), apnoea (apnea), appliance, arise time (clock time that an individual gets out of bed after the final awakening of the major sleep episode), arise time (getting out of bed time), arousal (change from deeper stage of
NREM sleep towards wakefulness), arousal index, arousal disorder (with abnormal
arousal mechanism e.g. sleepwalking, sleep terror and confusional arousals), artifact,
ASAP (advanced sleep phase syndrome), ASDC (association of sleep disorders centers),
A-STEP (accredited sleep technologist educational program), auto-positive airway
pressure (A PAP), A PAP/A-PAP/Auto PAP (machine), automatic scoring, autotitration, awakening (according to PSG - return to awake state from any NREM or REM sleep
stages), bariatric surgery, baseline (normal state or level of a parameter prior to test or manipulation), baseline study montage, bed-partner, bedtime (“fall asleep attempt” clock time), behavioral, Berlin questionnaire, beta activity/ rhythm (EEG wave or sequence of waves : > 13 Hz.), beta spindle, BiPAP/BIPAP (bi-level positive airway pressure), BiPAP
and adaptive servo-ventilation, ), bio-electrical potentials, bipolar radiofrequency
surgery, Blair-Simmons, BMI (body mass index, caffeine, bio-calibrations (physiologic calibrations), bio-electrical potentials, biological clock, body position sensor, BPM (beats
per minute), BRPT (Board of Registered Polysomnographic Technologists), bruxism, BZ (benzodiazepine), CAD (coronary artery disease), CAHS (central alveolar hypoventilation syndrome), calibration, capnograph, capnometer, CAPSO (cautery assisted palatal
stiffening operation), carbon dioxide, CBF (cerebral blood flow), CBT (cognitive behavior therapy), cardiac arrhythmias, cardiovascular, cataplexy (a sudden decrement in muscle tone with loss of deep tendon reflexes with other features and one of the tetrad of symptoms of narcolepsy), cautery assisted palatal stiffening operation (CAPSO), cautery-assisted uvulopalatoplasty, central apnea, central sleep apnea (CSA), cephalometery, cephalometric radiographs, channel, Cheyne-Stokes respiration/breathing -a breathing pattern characterized by regular “crescendo-decrescendo” fluctuations in respiratory rate and tidal volumes), Cheyne-Stokes central apnea, CHF (congestive heart failure), chin
EMG, choking, chronic hypoxemia, chronic insomnia disorder, chronic obstructive
pulmonary disease, chronic sleep deprivation, chronobiology (science relating to
temporal- “primarily rhythmical” processes in biology), chronotherapy, circadian rhythm innate, co-morbid conditions, comorbidities, compliance (to CPAP treatment or therapy), congenital central alveolar hypoventilation syndrome,  congenital craniofacial
syndromes, cost-effectiveness, CPAP (continuous positive airway pressure), CPAPT (continuous positive airway pressure therapy), CPAP titration, craniofacial features, CPBS (central periodic breathing in sleep), CPS/cps (cycles per second or, Hertz or Hz), CRSD (circadian rhythm sleep disorder), CSA (central sleep apnea), CSA due to a medical
disorder without Cheyne-Stokes respiration/breathing, CSA due to high altitude periodic breathing, CSA due to a medication or a substance, DA (dopamine), daytime sleepiness, deep sleep (term for combined NREM stages 3 and 4 sleep), delayed sleep phase
syndrome, delta sleep (sleep in which EEG delta waves are prevalent or predominantly
sleep stages 3 and 4), diagnostic sleep study (baseline sleep study), desaturation, differential amplifier, digital PSG (polysomnography), DISE (drug-induced sleep
endoscopy), DOES (disorders of excessive somnolence), double referencing, drowsiness (quiet wakefulness prior to sleep onset), DRG (dorsal respiratory group), DRN (dorsal
raphe nucleus), drug-induced sleep endoscopy (DISE), DSIP (delta sleep inducing
peptide), DSPD (delayed sleep phase disorder), DSPS (delayed sleep phase syndrome or type), Dx (diagnosis), dyssomnia (disorder of initiating and maintaining sleep or of
excessive sleepiness), EA (endoscopic adenoidectomy), EAT/ETA/ET&A/ ETs&A
(endoscopic adenoidectomy and tonsillectomy), ET (endoscopic tonsillectomy), EDS (excessive daytime sleepiness), ECG/EKG (electrocardiogram/ electrocardiogram),