Level 1 Sleep Study (Polysomnography)

Level 1 Sleep Study (Polysomnography)

The Level 1 Sleep Study is the most comprehensive sleep test which is used to diagnose the sleep disorders, especially sleep-related breathing disorders like Obstructive Sleep Apnea (OSA), Central Sleep Apnea (CSA), and parasomnias. It is performed overnight in a sleep lab under the supervision of trained technicians.

What Does It Monitor?

Polysomnography helps to monitor multiple body functions simultaneously during the sleep:

Who Needs a Level 1 Sleep Study?

The people who are suspected by these diseases:

How to prepare for the Study?

 

What Happens During the Test?

  1. Usually the patients arrive at the sleep lab in the evening.
  2. Then the technicians will place electrodes and sensors on your head, face, chest, legs.
  3. You’ll be asked to sleep as naturally as possible.
  4. The test usually runs for 6–8 hours overnight.
  5. A technician monitors you in real time from another room.

How the Results are interpreted?

A sleep specialist reviews the data including:

Frequently Asked Questions (FAQs)

No, the test is non-invasive and painless. Though the wires may feel unfamiliar, but most of the people can fall asleep eventually. The lab is kept quiet and dark for the patient’s comfort.

Even a few hours of recorded sleep can provide sufficient diagnostic data. If no results are obtained, the study may be repeated or rescheduled with mild sleep aids under the supervision.

Home sleep tests (Level 3) record fewer signals and are not suitable for all patients. Level 1 studies are gold standard tests with full brain, heart, breathing, and movement analysis under supervision.

The results are available within 7–10 days, after review by a sleep medicine specialist. The results guide further treatment like CPAP, BiPAP, or medical/surgical interventions.

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