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Sleep Studies

Sleep study is a multiparametric test used in the study of sleep pattern, a comprehensive recording of the biophysical changes that occur during sleep and as a diagnostic tool in sleep medicine. It is also known as polysomnography.

Those affected by sleep disorders:

  • Most sufferers are unaware
  • Detected by bed partner who witnesses symptoms
  • Excessive daytime sleepiness and falling asleep spontaneously but not at appropriate times
  • Restless sleep
  • Loud, disruptive snoring
  • Depressive moods
  • Forgetfulness
  • Irritability
  • Have trouble concentrating

Indications for sleep study:

  1. Epsworth sleepiness scale: >10
  2. Obstructive Sleep Apneoa (OSA)
  3. Sleep Disordered Breathing (SDB)
  • Snoring
  • Upper airway resistance syndrome
  • Hypopnea syndrome – shallow breathing while sleeping
  1. H/O Sleep deprivation > 1 month
  2. Abrupt awakening while sleeping
  3. Enuresis (Bed wetting)
  4. Bradyarrhythmia evaluation (while sleeping)


  1. It is usually performed at night
  2. Epsworth Sleepiness Scale (ESS) can be measured
  3. Upper airway passage examination to be assessed
  4. Psychiatric conditioned to be ruled out
  5. Preparing the measurement and attaching the sensors to the patient can be done in the institution
  6. Various sensors used:
    1. Thermistor for determining nasal/ oral flow
    2. Thoracic effort sensor with belt measures chest wall movement
    3. Abdominal effort sensor with belt measures abdominal wall movement
    4. Finger clip (SpO2 sensor) for the measurement of oxygen saturation and pulse
    5. Cuff with activity sensor measures body movement


The choice of a specific treatment depends on the patient’s diagnosis as well as the expertise of the treating physician.

Sleep study and diagnosis is performed at Dr.Jeyasekharan Medical Trust. Please contact us for more information.