The Effect of Obstructive Sleep Apnea Therapy on Cardiovascular Autonomic Function: A Systematic Review and Meta-Analysis.

OSA therapy selectively improves autonomic function measures. The strongest evidence for the effect of OSA therapy on autonomic function was seen in reduced sympathetic activity as assessed by microneurography, but without increased improvement in parasympathetic function. OSA therapy may reduce the risk of cardiovascular disease in OSA through reduced sympathetic activity.