Effects of CPAP an vigilance and related functions in patients with the sleep apnea/hypopnea syndrome

There have been relatively few robust studies of the effects of CPAP therap y on vigilance and daytime function. This article will use all known publis hed and unpublished randomized clinical trials on this area. There is good evidence that CPAP helps subjective sleepiness, objective sleepiness, quali ty of life, mood and driving performance. However, CPAP does not appear to normalize objective sleepiness. Many of the improvements are directly relat ed to the nightly use of CPAP. Recent data suggest that increasing CPAP usa ge improves outcomes.