http://articles.mercola.com/sites/articles/archive/2002/02/20/heartrate-sleep.aspxSpeeding the heartbeat with a pacemaker relieves some cases of sleep apnea. How a pacemaker might reduce the severity of the sleep disorder is uncertain, but the study's authors suspect that the implanted device counteracts the "decelerating"enCommunityServer 2008.5 SP1 (Build: 31106.3070)