Human heart has multiple battery back-ups: study

Thursday 27 July 2017 4 weeks ago 35   Washington   Print

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Report  Web Desk : WASHINGTON: Researchers at Ohio State University have discovered that the human heart natural pacemaker has multiple battery back-up systems. More than 200,000 people in the United States have a pacemaker implanted each year, which translates to an average of an implant about every two and a half minutes. Researchers at The Ohio State University Wexner Medical Center have found that the human heart actually has a fail-safe, backup battery system that regulates heartbeats. The heart natural pacemaker, known as the sinoatrial node, or SAN, consists a battery back-up system with three diverse regions of pacemakers acting as batteries and up to five conduction pathways that act as wires to connect the signal to the heart atria. They then placed the hearts in a glass chamber filled with an oxygenated solution at body temperature and supplied the coronary arteries with warm, oxygenated solution that stimulates blood flow, resuscitating the hearts and allowing the SAN to beat again with the same rhythm it had prior. We observed that all three intranodal pacemakers are used, depending on the heart’s needs at rest, or during normal or high exertion, Fedorov said. Total cardiac arrest occurs only when all pacemakers or conduction pathways fail, whether due to disease or age. (01)