What is Polysomnography?

A polysomnography, or sleep study, is a multi channel recording of a number of parameters important to assessing sleep quality and documenting the presence of primary sleep disorders.

What is involved?

Studies can be performed either in a sleep laboratory or, alternatively, in the patient’s home.  Home based studies may have fewer recording channels, and may also be non-diagnostic in the event of equipment failure during the study. Nevertheless, in the context of a high pre-test likelihood of specific disease (i.e. OSA) they are often sufficient to provide an accurate diagnosis.

Who needs a Sleep Study?

There are a variety of potential reasons why patients may require the performance of a sleep study.
these may include (but are not limited to):

  • Loud snoring
  • witnessed apnoeas (pause in breathing), or night time choking episodes
  • Un-refreshing sleep
  • Waking with headaches or severe dry mouth
  • Frequent urination at night
  • Daytime sleepiness
  • Restless sleep
  • Refractory hypertension

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Obstructive Sleep Aponea

For more information about Obstructive Sleep Aponea:  Read this article