We do three common types of Overnight sleep study: (Polysomnogram) – PSG
- Diagnostic Evaluation
This study measures your sleep without any intervention. It’s typically used to diagnose or rule out a sleep disorder, such as sleep apnea, restless leg syndrome, or sleep related seizure disorder.
- Continuous Positive Airway Pressure (CPAP) Titration
During a CPAP titration, the setting on the CPAP machine is adjusted to determine how much air pressure is needed to normalize your breathing.
- Split Night Study
A split night study is a combination of a diagnostic and CPAP titration study. The first half is used to diagnose sleep apnea and then halfway through the night CPAP is started. The sleep tech spends the rest of the night adjusting the pressure until breathing has been normalized.
What is a Polysomnogram?
A polysomnogram is a sleep test, which measures body functions during sleep.
Each test will vary depending on the individual case, but some measurements taken may include:
- Brain waves (EEG) (surface electrodes on your scalp)
- Eye movements (EOG) (surface electrodes next to your eyes)
- Muscle movements (EMG) (surface electrodes on and under your chin)
- Limb movements (EMG) (surface electrodes on your lower legs)
- Heart rate (ECG) (surface electrodes on your chest)
- Breathing (Nasal/Oral) (sensors placed onto the skin near your nose and mouth)
- Breathing (Respiratory) (small, elastic bands placed around your chest and abdomen or surface electrodes placed on your ribcage.