RELIAS MEDICAL-SURGICAL TELEMETRY COMPREHENSIVE
EXAM QUESTIONS COMPLETE WITH 100% VERIFIED ANSWERS
AND RATIONALE
Question 1: What does the P wave represent?
A. Ventricular repolarization
B. Atrial depolarization
C. Ventricular depolarization
D. Atrial repolarization
CORRECT ANSWER: B. Atrial depolarization
Rationale: The P wave represents atrial depolarization, which is the electrical
activation of the atria that leads to atrial contraction.
Question 2: What is the normal duration of the PR interval?
A. 0.20-0.30 seconds
B. 0.10-0.12 seconds
C. 0.12-0.20 seconds
D. 0.04-0.08 seconds
CORRECT ANSWER: C. 0.12-0.20 seconds
Rationale: The normal PR interval measures 0.12 to 0.20 seconds (3-5 small boxes
on standard ECG paper), representing the time from atrial depolarization to
ventricular depolarization.
Question 3: What does the QRS complex represent?
A. Ventricular repolarization
B. Atrial depolarization
,C. Atrial repolarization
D. Ventricular depolarization
CORRECT ANSWER: D. Ventricular depolarization
Rationale: The QRS complex represents ventricular depolarization, the electrical
activation of the ventricles that triggers ventricular contraction.
Question 4: What is the normal duration of the QRS complex?
A. Less than 0.12 seconds
B. 0.20-0.30 seconds
C. 0.12-0.20 seconds
D. Greater than 0.30 seconds
CORRECT ANSWER: A. Less than 0.12 seconds
Rationale: The normal QRS duration is less than 0.12 seconds (3 small boxes),
indicating normal conduction through the ventricles.
Question 5: What does the T wave represent?
A. Ventricular depolarization
B. Atrial depolarization
C. Ventricular repolarization
D. Atrial repolarization
CORRECT ANSWER: C. Ventricular repolarization
Rationale: The T wave represents ventricular repolarization, the recovery phase of
the ventricles after contraction.
Question 6: What is the normal heart rate for a sinus rhythm?
A. 100-150 bpm
B. 60-100 bpm
,C. 40-60 bpm
D. 20-40 bpm
CORRECT ANSWER: B. 60-100 bpm
Rationale: Normal sinus rhythm has a rate of 60-100 beats per minute with
normal P waves, PR interval, and QRS duration.
Question 7: What is the intrinsic rate of the SA node?
A. 20-40 bpm
B. 40-60 bpm
C. 60-100 bpm
D. 100-150 bpm
CORRECT ANSWER: C. 60-100 bpm
Rationale: The SA node has an intrinsic firing rate of 60-100 bpm and serves as the
primary pacemaker of the heart.
Question 8: What is the intrinsic rate of the AV junction?
A. 20-40 bpm
B. 60-100 bpm
C. 100-150 bpm
D. 40-60 bpm
CORRECT ANSWER: D. 40-60 bpm
Rationale: The AV junction has an intrinsic rate of 40-60 bpm and serves as the
secondary pacemaker when the SA node fails.
Question 9: What is the intrinsic rate of the ventricles?
A. 60-100 bpm
B. 20-40 bpm
, C. 40-60 bpm
D. 100-150 bpm
CORRECT ANSWER: B. 20-40 bpm
Rationale: The ventricles have an intrinsic rate of 20-40 bpm, serving as a tertiary
pacemaker when higher pacemakers fail.
Question 10: Where is the V1 electrode placed?
A. 5th intercostal space, midclavicular line
B. 4th intercostal space, left sternal border
C. 5th intercostal space, anterior axillary line
D. 4th intercostal space, right sternal border
CORRECT ANSWER: D. 4th intercostal space, right sternal border
Rationale: V1 is placed at the 4th intercostal space, right sternal border to monitor
septal leads.
Question 11: Where is the V2 electrode placed?
A. 4th intercostal space, left sternal border
B. 5th intercostal space, midclavicular line
C. 5th intercostal space, anterior axillary line
D. 4th intercostal space, right sternal border
CORRECT ANSWER: A. 4th intercostal space, left sternal border
Rationale: V2 is placed at the 4th intercostal space, left sternal border, mirroring
V1 placement on the left side.
Question 12: Where is the V4 electrode placed?
A. 4th intercostal space, left sternal border
B. 5th intercostal space, midaxillary line
EXAM QUESTIONS COMPLETE WITH 100% VERIFIED ANSWERS
AND RATIONALE
Question 1: What does the P wave represent?
A. Ventricular repolarization
B. Atrial depolarization
C. Ventricular depolarization
D. Atrial repolarization
CORRECT ANSWER: B. Atrial depolarization
Rationale: The P wave represents atrial depolarization, which is the electrical
activation of the atria that leads to atrial contraction.
Question 2: What is the normal duration of the PR interval?
A. 0.20-0.30 seconds
B. 0.10-0.12 seconds
C. 0.12-0.20 seconds
D. 0.04-0.08 seconds
CORRECT ANSWER: C. 0.12-0.20 seconds
Rationale: The normal PR interval measures 0.12 to 0.20 seconds (3-5 small boxes
on standard ECG paper), representing the time from atrial depolarization to
ventricular depolarization.
Question 3: What does the QRS complex represent?
A. Ventricular repolarization
B. Atrial depolarization
,C. Atrial repolarization
D. Ventricular depolarization
CORRECT ANSWER: D. Ventricular depolarization
Rationale: The QRS complex represents ventricular depolarization, the electrical
activation of the ventricles that triggers ventricular contraction.
Question 4: What is the normal duration of the QRS complex?
A. Less than 0.12 seconds
B. 0.20-0.30 seconds
C. 0.12-0.20 seconds
D. Greater than 0.30 seconds
CORRECT ANSWER: A. Less than 0.12 seconds
Rationale: The normal QRS duration is less than 0.12 seconds (3 small boxes),
indicating normal conduction through the ventricles.
Question 5: What does the T wave represent?
A. Ventricular depolarization
B. Atrial depolarization
C. Ventricular repolarization
D. Atrial repolarization
CORRECT ANSWER: C. Ventricular repolarization
Rationale: The T wave represents ventricular repolarization, the recovery phase of
the ventricles after contraction.
Question 6: What is the normal heart rate for a sinus rhythm?
A. 100-150 bpm
B. 60-100 bpm
,C. 40-60 bpm
D. 20-40 bpm
CORRECT ANSWER: B. 60-100 bpm
Rationale: Normal sinus rhythm has a rate of 60-100 beats per minute with
normal P waves, PR interval, and QRS duration.
Question 7: What is the intrinsic rate of the SA node?
A. 20-40 bpm
B. 40-60 bpm
C. 60-100 bpm
D. 100-150 bpm
CORRECT ANSWER: C. 60-100 bpm
Rationale: The SA node has an intrinsic firing rate of 60-100 bpm and serves as the
primary pacemaker of the heart.
Question 8: What is the intrinsic rate of the AV junction?
A. 20-40 bpm
B. 60-100 bpm
C. 100-150 bpm
D. 40-60 bpm
CORRECT ANSWER: D. 40-60 bpm
Rationale: The AV junction has an intrinsic rate of 40-60 bpm and serves as the
secondary pacemaker when the SA node fails.
Question 9: What is the intrinsic rate of the ventricles?
A. 60-100 bpm
B. 20-40 bpm
, C. 40-60 bpm
D. 100-150 bpm
CORRECT ANSWER: B. 20-40 bpm
Rationale: The ventricles have an intrinsic rate of 20-40 bpm, serving as a tertiary
pacemaker when higher pacemakers fail.
Question 10: Where is the V1 electrode placed?
A. 5th intercostal space, midclavicular line
B. 4th intercostal space, left sternal border
C. 5th intercostal space, anterior axillary line
D. 4th intercostal space, right sternal border
CORRECT ANSWER: D. 4th intercostal space, right sternal border
Rationale: V1 is placed at the 4th intercostal space, right sternal border to monitor
septal leads.
Question 11: Where is the V2 electrode placed?
A. 4th intercostal space, left sternal border
B. 5th intercostal space, midclavicular line
C. 5th intercostal space, anterior axillary line
D. 4th intercostal space, right sternal border
CORRECT ANSWER: A. 4th intercostal space, left sternal border
Rationale: V2 is placed at the 4th intercostal space, left sternal border, mirroring
V1 placement on the left side.
Question 12: Where is the V4 electrode placed?
A. 4th intercostal space, left sternal border
B. 5th intercostal space, midaxillary line
