CPAP Reduces the Risk of a Repeat Angioplasty – CHEST Journal April 2015

CPAP Reduces the Risk of Revascularization – CHEST April 2015

Between 2002 and 2012, Xiaofan Wu, MD and colleagues identified 390 patients with OSA who had undergone angioplasty of the blocked coronary arteries. Obstructive Sleep Apnea was diagnosed in these patients through in-laboratory sleep studies and defined by an apnea-hypopnea (apnea = cessation of respirations, hypopnea = shallow respiration for longer than 10 seconds) index ≥ 5 events/h. The median follow-up period was 4.8 years (interquartile range, 3.0-7.1).

The untreated moderate-severe OSA group had a higher incidence of blockage of coronary artery needing a repeat angioplasty than the treated moderate-severe OSA group (25.1% vs 14.1%, P = .019). CPAP treatment reduced this risk.