If you’ve had a heart attack and you snore, wake up tired, or struggle with blood pressure, sleep apnea may be part of the picture. PAP therapy (CPAP/APAP/BiPAP) can reduce nighttime oxygen drops and stress surges that strain the heart—especially when sleep apnea is present. In this post, you’ll learn who should get tested, what the research really says, and how to get the best results if you use PAP.