![]() So how can this electrical misfiring happen? Every piece of tissue in your heart is electrically active. ![]() In this way, the ventricles can pump the maximum amount of blood both to the lungs and to the rest of the body. The electricity then spreads across the upper two chambers of the heart (the atria) and is then transmitted to the lower two chambers (the ventricles) through the atrioventricular node.ĭuring a normal heartbeat, your heart’s ventricles contract blood out to your entire body after your heart’s atria have helped to fill them. In a normal electrical conduction, impulses originate from an area in the top right corner of the heart known as the sinus node. Here’s how it works:Įvery time your heart squeezes blood out to the rest of your body, it requires an electrical impulse. ![]() The study looked at the criteria for interpretation of electrocardiograms (ECGs) of people’s hearts and noted that an increasing number of sporting bodies report unacceptably high levels of false-positive ECGs in pre-participation cardiac screening. This means that athletes and fitness enthusiasts who have electrical abnormalities in the heart during exercise may be experiencing something that’s completely normal for an athlete, and that doesn’t necessarily reflect a serious cardiac pathology, including a PVC.Īnd while a PVC may sound like something out of a science fiction novel or a do-it-yourself household plumbing guide, it actually stands for premature ventricular contraction. Opens in a new windowA new study found that many athletes have electrical heart “issues,” but these issues may not actually be meaningful from a cardiac risk standpoint. ![]()
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