The complexity of the sleep study varies according to the suspected diagnosis. If obstructive sleep apnoea is most likely, an oximetry study may be sufficient on its own, or combined with measurement of airflow and abdominal and rib cage movement. In most other situations polysomnography is needed to give information about sleep architecture, arousals, sleep-onset REM, and the cause of arousals from sleep, such as periodic limb movements in sleep, central sleep apnoeas or gastro-oesophageal reflux. Serial sleep studies may be required to monitor progress with treatment.
Was this article helpful?