Polysomnography - Best Interventional Pulmonologist in Indore
Polysomnography
Polysomnography (PSG) is a comprehensive sleep study used to diagnose sleep disorders. It records various physiological parameters during sleep, including brain activity, eye movements, muscle activity, heart rate, respiratory effort, oxygen levels, and leg movements. This non-invasive test is typically performed overnight in a sleep center or hospital setting.
Diagnosing Sleep Disorders:
- Sleep apnea (e.g., obstructive sleep apnea, central sleep apnea).
- Narcolepsy.
- Restless leg syndrome.
- Parasomnias (e.g., sleepwalking, night terrors).
- Periodic limb movement disorder.
- Insomnia (in some cases).
Evaluating Sleep Stages and Quality:
Helps determine the types and stages of sleep (e.g., REM sleep, deep sleep).
Measures the efficiency of sleep cycles and potential disruptions.
How Polysomnography Works
Preparation
The patient may be instructed to avoid caffeine, alcohol, and certain medications before the test. A physical exam may be performed to assess the patient’s health and sleep-related issues.
During the Procedure:
The patient is monitored while sleeping in a sleep lab or hospital room.
Various sensors are attached to the body:
Electrodes are placed on the scalp to measure brain activity (EEG).
Sensors on the face and near the eyes monitor eye movements (EOG).
Electrodes on the chin and legs track muscle activity (EMG).
Chest and abdomen belts measure respiratory effort.
A pulse oximeter is placed on a finger to track oxygen levels.
A microphone records snoring or unusual sounds.
Duration:
The test typically lasts for 7–8 hours to capture a full night of sleep.
