Sleep Study


The sleep study also called, Polysomnography helps a doctor diagnose sleep disorders such as sleep apnea, periodic limb movement disorder, narcolepsy, restless legs syndrome, insomnia, and nighttime behaviours like sleepwalking and REM sleep behaviour disorder. A polysomnography test is done while you are fully asleep. A doctor will observe you as you sleep, record data about your sleep patterns, and may identify any sleep disorders.

During a sleep study, a doctor will measure the following;

  • Brain waves
  • Skeletal muscle activity
  • Blood oxygen levels
  • Heart rate
  • Breathing rate
  • Eye movement

These studies help chart your sleep cycles. Observing your sleep cycles, along with your body’s reactions to the changes in these cycles, can help identify disruptions in your sleep patterns.

Why Do I Need a Polysomnography?

A doctor can use a sleep study test to diagnose sleep disorders.

It often evaluates for symptoms of sleep apnea, a disorder in which breathing constantly stops and restarts during sleep. The symptoms of sleep apnea include:

  • Sleepiness during the day despite having rested
  • Ongoing and loud snoring
  • Periods of holding your breath during sleep, which are followed by gasps for air
  • Frequent episodes of waking up during the night
  • Restless sleep

The sleep study can also help your doctor diagnose the following sleep disorders:

  • Narcolepsy, which involves extreme drowsiness and “sleep attacks” during the day
  • Sleep-related seizure disorders
  • Periodic limb movement disorder or restless legs syndrome, which involves uncontrolled flexing and extension of the legs while asleep
  • REM sleep behaviour disorder, which involves acting out dreams while asleep
  • Chronic insomnia, which involves having difficulty falling asleep or remaining asleep

The National Heart, Lung, and Blood Institute (NHLBI) warns that if sleep disorders go untreated, they can raise your risk of:

  • Heart disease
  • High blood pressure
  • Stroke
  • Depression

There’s also a link between sleep disorders and an increased risk of injuries related to falling and car accidents.

Types of Sleep Study

Different types of sleep studies are available depending on one’s symptoms and the sleep disorders that may be present.

  • Polysomnography

This study measures different types of functions throughout the night including eye movements, brain and muscle activity, respiratory effort and airflow, blood oxygen levels, body positioning and movements, snoring, and heart rate. Polysomnography is performed by a technician at a specialized clinic.

  • Multiple Sleep Latency Test

This test is primarily used to diagnose excessive daytime sleepiness that may be due to narcolepsy or an unknown cause (idiopathic hypersomnia).

  • CPAP Titration

Continuous positive airway pressure (CPAP) is a common treatment for sleep apnea. A CPAP titration study is a type of in-lab sleep study used to calibrate continuous positive airway pressure (CPAP) therapy.

  • Home Sleep Apnea Testing

Home sleep apnea testing collects data about a patient’s breathing, heart rate, and other variables overnight.

Why Choose Us?

Bansal Diagnostic Centre has one of the most experienced practices, devoted to meeting the diagnostics needs of our patients at all stage of their lives. Our team has been providing tailored individual care to our patients with trusted specialist services by our expert team of radiologists and sonographers for over 10 years. As a trusted provider in delivering an accurate diagnosis of scans in a fast and accurate system, our patients feel confident and safe in the hands of our diagnostic and pathology specialists.