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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For more information about Obstructive Sleep Aponea: Read this article