Researchers have linked severe obstructive sleep apnea to increased risk of subclinical myocardial injury - an early sign of heart damage. This is according to a study published in the American Journal of Respiratory and Critical Care Medicine. According to the researchers from Brigham and Women's Hospital in Boston, previous studies have shown obstructive sleep apnea (OSA) - interrupted breathing during sleep - to be linked with increased prevalence of cardiovascular disease...