NR 340-Exam 2 Study Guide-Critical Care
Basic Electrophysiology Automaticity-The ability for the heart muscle to generate it's own electrical activity o Pacemaker Cells arise naturally from the SA Node o Electrolytes involved are K+, Na+, & Ca+ Cardiac Action Potentials Depolarization-occurs when charge is more (+) o P wave=atrial depolarization o QRS complex=ventricular depolarization o contraction o Systole Repolarization-recharging period when charge is more (-) o T wave=ventricular repolarization o filling o Diastole Electrical + Mechanical=Cardiac Contra
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nr 340 exam 2 study guide critical care