Patient Room

Torrance Memorial comprehensive Sleep Disorders Center includes sleep studies for those experiencing ongoing difficulty falling asleep, maintaining sleep, and exhibiting excessive sleepiness during waking hours or undergoing bariatric surgery. The studies, which are conducted in home-like settings, provide essential data on sleep patterns.

Sleep Consultation

During an initial sleep consultation, a sleep specialist will interview the patient about his/her sleep habits. The specialist uses the patient's history to evaluate symptoms such as difficulty falling asleep, difficulty staying asleep, daytime sleepiness or fatigue, breathing problems during sleep, restless legs at night and other various troublesome behaviors. The sleep specialist may recommend an overnight sleep study known as a Polysomnogram, to further evaluate patients. Consultations are performed in our medical director’s private practice. Dr Kneisley’s private practice can be reached at 310-530-8822.

Sleep Study

A sleep study, or Polysomnogram (PSG), is an overnight recording of sleep patterns and behaviors associated with sleep. It is performed in order to determine what stages of sleep an individual achieves and whether any sleep-related abnormalities are present. A variety of sensors are applied with paste or tape to the body's surface to record brain waves, eye movements, muscle tone, body movements, heart rate and breathing patterns. Audiovisual recordings are also made, and the oxygen content of the blood is measured non-invasively with a simple clip on the index finger. These procedures are painless, and although there are connecting wires to the sensors, the patient is free to get up and walk around as needed.

During the sleep study, every attempt is made to allow for a normal night's sleep. Some people typically sleep better or worse when away from home, but in either case this does not usually affect the quality of the sleep study. The Torrance Memorial Sleep Disorders Center has a homey, bedroom-like atmosphere with select comfort beds and cable TV. Patients wear their own bedclothes and can bring their favorite pillow, blanket. A trained sleep technologist is there to explain the procedure, operate the diagnostic equipment, and is stationed all night in an adjacent control room to both monitor the sleep recording and ensure the patient's comfort.

Following the sleep study, a board-certified sleep specialist interprets the recording. The findings are integrated with the patient's sleep history to determine a diagnosis and make the appropriate treatment recommendations. A sleep study report is also sent to the patient's primary care physician, who should review the results with the patient at a follow-up office visit.

Titration Study (CPAP)

As a result of a sleep study (Polysomnogram or PSG), a patient may be diagnosed with Obstructive Sleep Apnea (OSA), and may be sent by the primary care physician back to the sleep center for another sleep study with CPAP (pronounced — see-pap). CPAP stands for Continuous Positive Airway Pressure and is the most effective and widely used method of treating sleep apnea.

While asleep, this system gently delivers air into a person's airway through a specially designed mask, which fits over the nose or mouth, thereby creating enough pressure to keep the airway open and produce immediate relief from sleep apnea and snoring. Most people find they get used to the CPAP apparatus after a few minutes and have little difficulty sleeping with it in place. It is important to note that the CPAP does not breathe for the person, but instead allows the person to breathe at a normal rate.

At the beginning of a CPAP study sensors are applied to the patient's body as they were for the Polysomnogram and again brain waves, eye movements, muscle tone, breathing patterns and blood oxygen levels are monitored. Before the patient falls asleep, the sleep technologist will fit the patient with the CPAP mask and make sure it is comfortable for the patient.


In some cases, both diagnosis and treatment of a breathing problem while sleeping can be accomplished in a single night's study, rather than two separate studies. As with the polysomnogram (PSG), sensors measure the patient's brain waves, eye movements, muscle tone, breathing patterns and blood oxygen levels. Once asleep, the technologist carefully monitors the sleep diagnostic equipment for any sign of disrupted breathing during sleep. If interruptions in the patient's breathing (known as sleep apnea) are observed, the technologist will apply CAP during the second half of the sleep study.