CRAT EXAM 1 QUESTIONS WITH CORRECT
ANSWERS 2025/2026 RATED A+
1. When the technician is performing a 12 lead EKG, how many electrodes are used to record
the 12 views of the heart?
A. 8
B. 10
C. 12
D. 24 - CORRECT ANSWER --B.10
2. Segments and waveforms on an ECG would include all but which of the following?
A. PR interval
B. QRS complex
C. TB wave
D. QT interval - CORRECT ANSWER --C. TB wave
3. In measuring ventricular regularity if there is no R wave what could be measured instead?
A. P wave
B. Q wave
C. The Q and S wave junction
D. S wave - CORRECT ANSWER --Q and S wave junction
4. The parasympathetic nervous system would do which of the following?
A. Slows is the patient's heart rate
B. enhanced digestion
C. Decreases the patient's blood pressure
,D. All of the above - CORRECT ANSWER --D. All of the above
5. Which of the following protects the ventricles from the 400 through 600 erratic atrial
impulses that occur during the atrial fibrillation?
A. SA node
B. Muscle tissue around the AV node
C. AV node
D. Muscle tissue on the SA node - CORRECT ANSWER --C. AV node
6. Generally, there is no treatment necessary for bradycardia unless the patient shows
symptoms of which of the following?
A. Decreased cardiac output
B. Excessive output
C. Non-existing cardiac output
D. All of the above - CORRECT ANSWER --A. Decreasing cardiac output
7. Which of the following types of permanent pacing requires cardiac surgery to place wires?
A. Transcutaneous pacing
B. Epicardial pacing
C. Transvenous pacing
D. Defibrillator pacing - CORRECT ANSWER --B. Epicardial pacing
8. If the contact on an electrode is not conducting well or the placement is wrong which of the
following could occur?
A. Arrhythmia
B. Electric shock
C. Bradycardia
, D.wandering baseline - CORRECT ANSWER --D. Wandering baseline
9. Which of the following is most common ECG electrode misconnection or reversal?
A. Arm/leg reversal
B. Right arm/left arm
C. Left leg/right leg
D. Left arm/left leg - CORRECT ANSWER --B. Right arm, left arm
10. When interpreting a cardiac rhythm strip, all of the following would be considered steps
except?
A. Checking the position of the P wave
B. Determining the rate of the rhythm and if it's normal or abnormal
C. Determining the age of the patient
D. Evaluating if the rhythm is regular or irregular - CORRECT ANSWER --C. Determining the
patient's age
11. Accelerated junctional rhythm is only significant if the patient is showing signs of which of
the following?
A. Decreasing cardiac output
B. Sinus arrest
C. Increasing urine output
D. Hypertension - CORRECT ANSWER --A . Decreasing cardiac output
12. Sinus rhythm is the pacemaker action from which of the following?
A. Junctional tissue
B. SA node
C. Purkinje fibers
ANSWERS 2025/2026 RATED A+
1. When the technician is performing a 12 lead EKG, how many electrodes are used to record
the 12 views of the heart?
A. 8
B. 10
C. 12
D. 24 - CORRECT ANSWER --B.10
2. Segments and waveforms on an ECG would include all but which of the following?
A. PR interval
B. QRS complex
C. TB wave
D. QT interval - CORRECT ANSWER --C. TB wave
3. In measuring ventricular regularity if there is no R wave what could be measured instead?
A. P wave
B. Q wave
C. The Q and S wave junction
D. S wave - CORRECT ANSWER --Q and S wave junction
4. The parasympathetic nervous system would do which of the following?
A. Slows is the patient's heart rate
B. enhanced digestion
C. Decreases the patient's blood pressure
,D. All of the above - CORRECT ANSWER --D. All of the above
5. Which of the following protects the ventricles from the 400 through 600 erratic atrial
impulses that occur during the atrial fibrillation?
A. SA node
B. Muscle tissue around the AV node
C. AV node
D. Muscle tissue on the SA node - CORRECT ANSWER --C. AV node
6. Generally, there is no treatment necessary for bradycardia unless the patient shows
symptoms of which of the following?
A. Decreased cardiac output
B. Excessive output
C. Non-existing cardiac output
D. All of the above - CORRECT ANSWER --A. Decreasing cardiac output
7. Which of the following types of permanent pacing requires cardiac surgery to place wires?
A. Transcutaneous pacing
B. Epicardial pacing
C. Transvenous pacing
D. Defibrillator pacing - CORRECT ANSWER --B. Epicardial pacing
8. If the contact on an electrode is not conducting well or the placement is wrong which of the
following could occur?
A. Arrhythmia
B. Electric shock
C. Bradycardia
, D.wandering baseline - CORRECT ANSWER --D. Wandering baseline
9. Which of the following is most common ECG electrode misconnection or reversal?
A. Arm/leg reversal
B. Right arm/left arm
C. Left leg/right leg
D. Left arm/left leg - CORRECT ANSWER --B. Right arm, left arm
10. When interpreting a cardiac rhythm strip, all of the following would be considered steps
except?
A. Checking the position of the P wave
B. Determining the rate of the rhythm and if it's normal or abnormal
C. Determining the age of the patient
D. Evaluating if the rhythm is regular or irregular - CORRECT ANSWER --C. Determining the
patient's age
11. Accelerated junctional rhythm is only significant if the patient is showing signs of which of
the following?
A. Decreasing cardiac output
B. Sinus arrest
C. Increasing urine output
D. Hypertension - CORRECT ANSWER --A . Decreasing cardiac output
12. Sinus rhythm is the pacemaker action from which of the following?
A. Junctional tissue
B. SA node
C. Purkinje fibers
