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Study guide
Exam 2 Study Guide-Critical Care updated 2020
Exam 2 Study Guide-Critical Care updated 2020
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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