CNUR: Unit 4 - Advanced Cardiovascular
Challenges Exam | Questions with 100% Correct
Answers | Verified | Latest Update 2026/2027
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Practice questions for this set
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- Cardioversion to reset the HR back to normal in unstable patients
- Slowing ventricular rate with beta blockers
- Anticoagulants to prevent ischemic stroke from blood pooling in the atria
Choose an answer
What nursing interventions are
1 performed for a fib, atrial flutter, and 2 What is systole vs diastole?
SVT?
3 Explain the relative refractory period 4 Define contractility
Don't know?
, Terms in this set (77)
What is systole vs diastole? 1. Systole: Ventricles contract (pump blood out)
2. Diastole: Ventricles relax (fill with blood)
- Coronary arteries fill during diastole
Define automaticity - Ability to initiate an impulse/stimulus on its own
- SA node
Define excitability Ability to respond to an impulse/stimulus
Define conductivity - Ability to conduct an impulse/stimulus from one
cell to another
- AV node
Define contractility Ability to respond to an electrical impulse with
pump action
What is the normal conduction SA node --> AV node --> Bundle of His --> Purkinje
pathway of the heart? fibers
Explain the function of the - Electricity is required to produce a contraction
anatomical cardiac pacemakers - Tissues generate and send impulses that stimulate
cardiac myocytes to contract
What are the three anatomical 1. SA node: 60-100 impulses/min
cardiac pacemakers? 2. AV node: 40-60 impulses/min
3. Purkinje fibers: 20-40 impulses/min
Explain depolarization/phase 0 - Cells become positively charged as sodium
rushes into the cells
- The cell is activated to produce a contraction
Challenges Exam | Questions with 100% Correct
Answers | Verified | Latest Update 2026/2027
Save
Practice questions for this set
Learn 1 /7 Study using Learn
- Cardioversion to reset the HR back to normal in unstable patients
- Slowing ventricular rate with beta blockers
- Anticoagulants to prevent ischemic stroke from blood pooling in the atria
Choose an answer
What nursing interventions are
1 performed for a fib, atrial flutter, and 2 What is systole vs diastole?
SVT?
3 Explain the relative refractory period 4 Define contractility
Don't know?
, Terms in this set (77)
What is systole vs diastole? 1. Systole: Ventricles contract (pump blood out)
2. Diastole: Ventricles relax (fill with blood)
- Coronary arteries fill during diastole
Define automaticity - Ability to initiate an impulse/stimulus on its own
- SA node
Define excitability Ability to respond to an impulse/stimulus
Define conductivity - Ability to conduct an impulse/stimulus from one
cell to another
- AV node
Define contractility Ability to respond to an electrical impulse with
pump action
What is the normal conduction SA node --> AV node --> Bundle of His --> Purkinje
pathway of the heart? fibers
Explain the function of the - Electricity is required to produce a contraction
anatomical cardiac pacemakers - Tissues generate and send impulses that stimulate
cardiac myocytes to contract
What are the three anatomical 1. SA node: 60-100 impulses/min
cardiac pacemakers? 2. AV node: 40-60 impulses/min
3. Purkinje fibers: 20-40 impulses/min
Explain depolarization/phase 0 - Cells become positively charged as sodium
rushes into the cells
- The cell is activated to produce a contraction
