Doctors gave him drugs to slow his heart rate, but the medications instead caused his blood pressure to drop and led to a state called atrial fibrillation, making his heartbeat irregular and chaotic. A cardiologist then gave the teenager an electric shock, which dramatically improved the boy's symptoms and blood pressure. The human heart typically has one electrical pathway, and the impulses travel along it through the organ's center from its top to its bottom. Read More http://ift.tt/1uwViLc
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