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NR 340-Exam 2 Study Guide-Critical Care Graded A+ 2025
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Exam 2 Study Guide-Critical Care Basic Dysrhythmia Interpretation & Mgmt.-Ch 7 Blood Flow Review 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 Contraction
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