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sleep test information

Sleep Studies

Genesis SleepCare provides both in laboratory diagnostic polysomnographic (PSG) sleep studies at our comfortable sleep investigation units and at home sleep studies

In laboratory diagnostic sleep studies (PSG)

Our team performs sleep studies for adults at all our clinics, and for children over the age of 4 years in our Brisbane clinics only. Qualified nursing and scientific staff monitor our patients for the duration of the overnight study, attending to their needs during the night.

PSG is the gold standard in sleep diagnostic testing. PSG is a non-invasive test which records various biological processes that take place while you sleep. These include brainwave activity, breathing, muscle tone, limb movements, blood oxygen levels, and heart rhythm and rate. Additionally, we can perform Transcutaneous CO2 monitoring for suspicion of CO2 retention, as well as 21 lead EEG PSG for suspected nocturnal epilepsy.

At Home Sleep Studies

The Portable Sleep Study Process
After showering and changing into your sleeping attire or loose clothing, patients are required to arrive at their nearest 'setup' location between 4.00pm and 8.00pm. Including paperwork, this process will take around 45 minutes to an hour to complete.

After recording a number of measurements, including your blood pressure, height, weight and neck circumference, a number of electrodes are applied to your head and body. The process is non-invasive. During sleep, the device will monitor and record signals including brain activity, breathing rate, body position, muscle effort, oxygen level and heart rate and rhythm.

We ask you to please return the sleep monitoring device to the 'setup' location the morning after your study. The data will be downloaded and your results will be analysed and reviewed by one of our Sleep Scientists and Sleep Physicians.
Clinically severe results are noted immediately during analysis, and a preliminary notice is forwarded to your Doctor to expedite treatment. Otherwise your Referring Doctor can expect your results within 2 weeks.

[1] Home sleep studies are not suitable for all patients, and may not be suitable for you. At this time, the American Academy of Sleep Medicine guidelines on the use of Portable Monitoring Devices recommends that they should only be used in conjunction with a comprehensive sleep evaluation. Due to some pre-existing medical conditions and depending on what sleep disorder your doctor may suspect in your case, a home sleep study may not be suitable for you. Please consult with your doctor before considering this option.

[2] Please be advised that current Medicare guidelines restrict billing of a portable sleep study to one portable study in a twelve month period. If an abnormality is discovered from your portable study, and you require a second study for treatment, you will need to attend one of our sleep investigation units for the second study.

Continuous Positive Airway Pressure Therapy (CPAP)

Continuous Positive Airway Pressure is considered the gold standard in treatment for Obstructive Sleep Apnoea (OSA). CPAP works through the delivery of machine-generated pressurised air that is directed to the upper airway via a mask worn during sleep. The pressurised air splints the upper airway, preventing it from collapsing and closing. Snoring and obstructive apnoeas are eliminated.

While some people take to CPAP readily and immediately, many require support and guidance to help them keep on track. Our service has been designed to provide that essential support.

Narcolepsy is diagnosed during an overnight stay in a sleep investigation unit, followed by a daytime Multiple Sleep Latency Test (MSLT), also conducted in the sleep investigation unit. You may be asked to keep a sleep diary for a week or two prior to your overnight stay, to keep track of your sleeping patterns and how you feel during the day.

An MSLT is a daytime test which involves four or five 20 minute naps at two-hour intervals. This test monitors your sleep patterns, and will show an increase in certain sleep stages (mainly REM sleep) in narcoleptic patients. Most often your Sleep Physician (Specialist) will compare your night study and your day study, along with your symptoms, to correctly diagnose your condition.

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