<prompt> The Epwoh scale is used for assessing?Body mass indexVital capacity in post-operative patientsSleep apneaRisk of embolism in perioperative patient  <response>: The Epwoh sleepiness scale has been validated primarily in obstructive sleep apnea, though it has also shown success in detecting narcolepsy and idiopathic hypersomnia. It is used to measure excessive daytime sleepiness and is repeated after the administration of treatment e.g. CPAP to document improvement of symptoms. Fill up a questionnaire and if score is 8 medical advices is recommended and a polysomnography should be done. In narcolepsy, the Epwoh sleepiness scale has both a high specificity 100 and sensitivity 93.5. 