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SLEEP DIAGNOSTICS

  • Using state-of-the-art equipment, the Somnus Sleep Clinic offers numerous types of sleep studies to help diagnose a number of sleep disorders.

 

  • Nocturnal Polysomnogram, NPSG - The standard overnight diagnostic sleep study used to assess sleep disorders, including sleep apnea, periodic limb movement disorders, insomnia, 24 hour sleep-wake cycle disruptions etc. The study includes various physiological measurements such as respiratory effort and airflow, EEG (brain waves), EKG (Heart), EMG (muscle movement), oxygen saturations, and snoring. These parameters are standard on every overnight sleep study both diagnostic and therapeutic.

 

  • Though 56 channel polysomnography with expanded EEG, ECG, EMG electrodes and high quality video recording is the gold standard for sleep diagnosis, in our endeavor to provide diagnosis and treatment at affordable rates, limited channel profiles are also used in our centre based on patient requirement. However, we happily provide the gold standard 56 channel PSG with infra red video recording at our centre.

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  • CPAP (Continuous Positive Airway Pressure) Titration - A therapeutic study used to treat obstructive sleep apnea syndrome (OSAS). The purpose of this study is to explore a variety of CPAP pressures to determine which is the most effective in eliminating apneic events and snoring.

 

  • BiPAP (Bi-Level Positive Airway Pressure) Titration - An alternate therapeutic study used to treat patients who require higher pressures than CPAP allows or for those who are intolerant of CPAP. Pressures are explored on the inhalation and an alternate pressure on exhalation. This pressure spread is used to ease the work of breathing.​

 

  • REM Sleep Behavior Disorder (RBD) - A modified NPSG with electrodes added to the arms (in addition to the legs) to determine the presence of movement during REM, a stage of sleep during which the muscles are immobile. This study is performed if a patient is suspected of acting out his/her dreams at night.

 

  • Expanded EEG Sleep Recording - An NPSG performed with a full EEG montage during recording. This study is used to detect the presence of nocturnal seizures in addition to other sleep disorder.

 

  • Multiple Sleep Latency Test (MSLT) - A study performed during the day after a full diagnostic NPSG, this study is used to objectively determine a patient's level of sleepiness after a night’s sleep. The MSLT is a series of four- five timed test, two hours apart, during which we look to see whether a patient falls asleep, how quickly, and to what stage of sleep the patient reaches. The MSLT is most commonly used to diagnose narcolepsy or some degree of excessive daytime sleepiness.

 

  • Maintenance of Wakefulness Test (MWT) - A study performed to determine whether a patient is able to remain awake in a sleep induced environment. The MWT is used to assess the efficacy of the treatment of a sleep disorder.

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