CRAT New Practice Questions and Answers | Complete Exam
2027 Prep Resource | A+ Pass Guaranteed
Question 1.
What does the P wave represent?
Correct Answer: Atrial depolarization
Question 2.
What does the QRS complex represent?
Correct Answer: Atrial repolarization and ventricular depolarization
Question 3.
Q wave indicates what?
Correct Answer: Dead myocardial tissue. Always a negative deflection
Question 4.
What is the natural pacemaker of the heart?
Correct Answer: SA node
Question 5.
3 types of pacemakers
Correct Answer: 1) single (either RA or RV)
2) dual chamber (RA and LV)
3) bi-ventricular (RV and LV --> Congestive Heart Failure)
Question 6.
Which HB would you NOT need a pacemaker for?
Correct Answer: First-degree AV block (prolonged PRI >0.20 seconds)
Question 7.
Define intrinsic beats
Correct Answer: The patient's own heart beat
Question 8.
What is sensing?
Correct Answer: The ability for the heart to sense and respond to the electrical
activity of the heart
, Question 9.
What is capture?
Correct Answer: The pacemaker sends a stimulus to the heart which causes
the heart to depolarize
Question 10.
Failure to sense
Correct Answer: Lack of pacemaker spikes where they should have been.
Battery can be dead.
Question 11.
Failure to capture (loss of capture)
Correct Answer: No P or QRS after the pacemaker spike
Question 12.
Undersensing
Correct Answer: Pacemaker spikes in areas where they should not be (i.e. in
the T wave, an ST segment, or on top of another QRS)
Question 13.
Cardioversion vs. Defibrillation
Correct Answer: Cardioversion: to change the heart rhythm (usually from SVT
to sinus)
Defibrillation: only used for pulseless VT and v-fib
• Pacemaker inhibition -✓✓Pacemaker doesn't work because it senses the
heart is beating at or above the programmed rate
Question 14.
A-V sequential pacing
Correct Answer: When the pacemaker paces both the atrium and the ventricle
Question 15.
No pacemaker spikes is...
Correct Answer: Failure to sense
Question 16.
Pacemaker spikes with no P wave or QRS following it...
2027 Prep Resource | A+ Pass Guaranteed
Question 1.
What does the P wave represent?
Correct Answer: Atrial depolarization
Question 2.
What does the QRS complex represent?
Correct Answer: Atrial repolarization and ventricular depolarization
Question 3.
Q wave indicates what?
Correct Answer: Dead myocardial tissue. Always a negative deflection
Question 4.
What is the natural pacemaker of the heart?
Correct Answer: SA node
Question 5.
3 types of pacemakers
Correct Answer: 1) single (either RA or RV)
2) dual chamber (RA and LV)
3) bi-ventricular (RV and LV --> Congestive Heart Failure)
Question 6.
Which HB would you NOT need a pacemaker for?
Correct Answer: First-degree AV block (prolonged PRI >0.20 seconds)
Question 7.
Define intrinsic beats
Correct Answer: The patient's own heart beat
Question 8.
What is sensing?
Correct Answer: The ability for the heart to sense and respond to the electrical
activity of the heart
, Question 9.
What is capture?
Correct Answer: The pacemaker sends a stimulus to the heart which causes
the heart to depolarize
Question 10.
Failure to sense
Correct Answer: Lack of pacemaker spikes where they should have been.
Battery can be dead.
Question 11.
Failure to capture (loss of capture)
Correct Answer: No P or QRS after the pacemaker spike
Question 12.
Undersensing
Correct Answer: Pacemaker spikes in areas where they should not be (i.e. in
the T wave, an ST segment, or on top of another QRS)
Question 13.
Cardioversion vs. Defibrillation
Correct Answer: Cardioversion: to change the heart rhythm (usually from SVT
to sinus)
Defibrillation: only used for pulseless VT and v-fib
• Pacemaker inhibition -✓✓Pacemaker doesn't work because it senses the
heart is beating at or above the programmed rate
Question 14.
A-V sequential pacing
Correct Answer: When the pacemaker paces both the atrium and the ventricle
Question 15.
No pacemaker spikes is...
Correct Answer: Failure to sense
Question 16.
Pacemaker spikes with no P wave or QRS following it...
