The Possibly Detrimental Effects of Cardiac Arrhythmia

982 Words Feb 22nd, 2018 4 Pages
A heart usually beats anywhere from 60 to 100 times a minute. If there is a palpation or a fluttering rarely, the person should usually be fine. If these occur more often or on a frequent manner, this cardiac arrhythmia could be very severe (Hopkinsmedicine). The hearts electrical system is what controls the speed and pace of the heartbeat (NHLBI,NIH). Sinoatrial node or SA node is located in the right atrium and controls the rhythm of the heart. The SA node is cardiac muscle cells, and it acts as a pacemaker. Sinus rhythm is the regular heart rhythm (Scholarpedia). Atrial tachycardia is when the heart beats too fast. On the other hand, bradycardia is when the heart beats too slowly. The heart can also beat irregularly (Hopkinsmedicine). The electrical signal goes from the SA node to the left and right atria. This allows the atria to pump and contract blood to the ventricles. Then, the signal goes to the atrioventricular or AV node. The electrical signal slows down here, so the ventricles have time to fill themselves with blood. After the AV node, the electrical signal goes to the bundle of His, where the signal is eventually transported to the ventricles. In this phase, the signal causes the ventricles to contract and pump blood to the lungs and the other parts of the body (NHLBI, NIH). The reason I described this whole process was for the reader to…
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