Thoughts and feelings about sleep are examined and tested to see if they are correct, while behaviours are examined to see if they promote sleep. The most common index for the presence and severity of OSA is the Apnoea-Hypopnea Index (AHI), which shows the average number of apnea and hypopnea events per hour of sleep. Instead of immediately reducing the time in bed to the amount of sleep they get in a typical night, the time in bed is gradually reduced until it is reasonably close to the time they actually spend sleeping. In COMISA patients, treatment of sleep disorders with CBTi resulted in a difference of 7.5 event·h−1 in AHI between sleep phases and postures, compared with a control group without treatment.
Does CBT help with sleep apnea?
CBTi consolidates sleep phases and promotes a 15% reduction in OSA severity in patients with comorbid insomnia and OSA. In addition, CBT-I appears to promote improvements in functional status associated with drowsiness and daytime sleepiness. AHI was also highly dependent on posture and stage (Figure) and was consistently higher in all sleep phases than in supine position (p.). CBTI patients also saw a 21-minute greater decrease in objective alertness after sleep onset, a 15% higher reduction in the total number of nighttime awakenings, and a 15-minute greater reduction in N1 sleep than in control patients.
Talk to your doctor or sleep doctor to see if any of these methods could improve your sleep.