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the heart - ekg book

the heart - ekg book - med surg

QuestionAnswer
the zipper common phrase that refers to the vertical thick red line scar that runs down the center of a patient's chest after open-heart surgery.
circulatory systems at work in the heart right side of heart - blood from body. left side of heart - blood from lungs coronary arteries - oxygenated blood to heart itself
in coronary artery disease, the arteries that provide heart w/ oxygen become... narrowed/blocked
three stage process of damage to teh heart cells when there is a lack of oxygen to the myocardium ischemia, injury and infarct
cardiac cycle phases contraction and relaxation
depolarization of the heart muscle contraction
repolarization of the heart muscle relaxation
at rest the heart is ____ charged on the inside and ___ charged on the outside negatively inside and positively charged outside
What is an ECG? measurement of electrical activity. positive and negative charges are what the monitor records.
phases of repolarization relative refractory (heart susceptible to strong stimulation). absolute refractory (heart cannot receive any stimulation no matter how strong).
Created by: FSclafani
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