NR 340
Walden University
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NR 340 Exam 2 Study GuideCritical Care
- Exam (elaborations) • 14 pages • 2023
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NR 340 Exam 2 
Study GuideCritical CareExam 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 depolarizati...
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