NR 340 Exam 2 Study Guide-Critical Care: Basic
Dysrhythmia Interpretation & Mgmt-Ch 7 Blood Flow
Review (Complete solutions and resources for the course
exam) Latest updated version |With Verified Solutions 100%
Accuracy |GUARANTEED SUCCESS
Exam 2 Study Guide-Critical Care
Basic Dysrhythmia Interpretation & Mgmt-Ch 7
Blood Flow Review
,NR 340 Exam 2 Study Guide-Critical Care: Basic
Dysrhythmia Interpretation & Mgmt-Ch 7 Blood Flow
Review (Complete solutions and resources for the course
exam) Latest updated version |With Verified Solutions 100%
Accuracy |GUARANTEED SUCCESS
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
,NR 340 Exam 2 Study Guide-Critical Care: Basic
Dysrhythmia Interpretation & Mgmt-Ch 7 Blood Flow
Review (Complete solutions and resources for the course
exam) Latest updated version |With Verified Solutions 100%
Accuracy |GUARANTEED SUCCESS
• Action Potential Curve o See Below-Sodium, Potassium, & Calcium flow in &
out of the cell at different times allowing for charge changes and contraction of
heart muscle tissue. o 4 Phases
Early Repolarization
• sodium channels close
Phase 2-Plateau Phase
, NR 340 Exam 2 Study Guide-Critical Care: Basic
Dysrhythmia Interpretation & Mgmt-Ch 7 Blood Flow
Review (Complete solutions and resources for the course
exam) Latest updated version |With Verified Solutions 100%
Accuracy |GUARANTEED SUCCESS
• potassium leaves cell
Phase 3-Rapid Repolarization
• calcium channels close
• potassium returns into cell quickly
Phase 4-Resting Phase (polarized state)
• active transport through the Na-K pump begins restoring K to inside the cell &
sodium to the outside of the cell
• cell membranes become impermeable to sodium Potassium may move in &
out of the cell
Dysrhythmia Interpretation & Mgmt-Ch 7 Blood Flow
Review (Complete solutions and resources for the course
exam) Latest updated version |With Verified Solutions 100%
Accuracy |GUARANTEED SUCCESS
Exam 2 Study Guide-Critical Care
Basic Dysrhythmia Interpretation & Mgmt-Ch 7
Blood Flow Review
,NR 340 Exam 2 Study Guide-Critical Care: Basic
Dysrhythmia Interpretation & Mgmt-Ch 7 Blood Flow
Review (Complete solutions and resources for the course
exam) Latest updated version |With Verified Solutions 100%
Accuracy |GUARANTEED SUCCESS
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
,NR 340 Exam 2 Study Guide-Critical Care: Basic
Dysrhythmia Interpretation & Mgmt-Ch 7 Blood Flow
Review (Complete solutions and resources for the course
exam) Latest updated version |With Verified Solutions 100%
Accuracy |GUARANTEED SUCCESS
• Action Potential Curve o See Below-Sodium, Potassium, & Calcium flow in &
out of the cell at different times allowing for charge changes and contraction of
heart muscle tissue. o 4 Phases
Early Repolarization
• sodium channels close
Phase 2-Plateau Phase
, NR 340 Exam 2 Study Guide-Critical Care: Basic
Dysrhythmia Interpretation & Mgmt-Ch 7 Blood Flow
Review (Complete solutions and resources for the course
exam) Latest updated version |With Verified Solutions 100%
Accuracy |GUARANTEED SUCCESS
• potassium leaves cell
Phase 3-Rapid Repolarization
• calcium channels close
• potassium returns into cell quickly
Phase 4-Resting Phase (polarized state)
• active transport through the Na-K pump begins restoring K to inside the cell &
sodium to the outside of the cell
• cell membranes become impermeable to sodium Potassium may move in &
out of the cell
