Relias Medical Surgical Telemetry Exam 2024–
2026 Test Bank: 180 Verified Questions &
Rationales (Graded A+)
Question 1
A patient’s telemetry monitor displays a rhythm with a rate of 72 beats/minute,
regular RR intervals, a PR interval of 0.16 seconds, and a QRS duration of 0.08
seconds. However, there is a completely upright P wave preceding every QRS
complex. How should the nurse document this rhythm?
A) First-degree AV block
,B) Normal Sinus Rhythm (NSR)
C) Sinus Bradycardia
D) Junctional Rhythm
Correct Answer: B) Normal Sinus Rhythm (NSR)
Explanation: Normal Sinus Rhythm is characterized by a heart rate between
60 and 100 beats/minute, regular rhythm, normal P waves (upright in lead II)
preceding every QRS complex, a PR interval between 0.12 and 0.20 seconds,
and a QRS complex duration under 0.12 seconds. All criteria are perfectly
met here.
Question 2
The nurse notes that a patient's telemetry strip shows a regular rhythm with a
rate of 140 beats/minute. P waves are present, upright, and identical, but they
are buried slightly in the preceding T wave due to the fast rate. The PR interval
is 0.14 seconds, and the QRS is 0.06 seconds. Which rhythm is present?
A) Supraventricular Tachycardia (SVT)
B) Sinus Tachycardia
C) Atrial Flutter
D) Ventricular Tachycardia
Correct Answer: B) Sinus Tachycardia
Explanation: Sinus tachycardia matches all the criteria of normal sinus
rhythm except that the rate is between 101 and 150 beats/minute. Because the
P waves are still clearly driving the rhythm and have a normal, consistent
morphology and normal PR interval, it is classified as sinus tachycardia
rather than SVT.
,Question 3
While analyzing a telemetry strip, the nurse observes a progressive lengthening
of the PR interval until a QRS complex is completely dropped. After the
dropped beat, the cycle repeats. What is the correct interpretation of this
rhythm?
A) Mobitz Type II (Second-degree AV block)
B) Mobitz Type I / Wenckebach (Second-degree AV block)
C) Third-degree AV block
D) First-degree AV block
Correct Answer: B) Mobitz Type I / Wenckebach (Second-degree AV block)
Explanation: Mobitz Type I (Wenckebach) is characterized by a progressive
prolongation of the PR interval on consecutive beats until an atrial impulse is
completely blocked and a QRS complex is dropped ("longer, longer, longer,
drop, now you have a Wenckebach").
Question 4
A patient's telemetry shows a sudden dropped QRS complex without any prior
warning. The PR intervals of the conducted beats remain completely constant
and normal before the drop. Which conduction block is occurring?
A) First-degree AV block
B) Mobitz Type I (Wenckebach)
C) Mobitz Type II (Second-degree AV block)
D) Complete Heart Block
, Correct Answer: C) Mobitz Type II (Second-degree AV block)
Explanation: In Second-degree AV Block Type II (Mobitz II), the PR
intervals of conducted beats remain constant. The block occurs below the AV
node, causing random or patterned (e.g., 2:1, 3:1) dropped QRS complexes
without warning, making it much more dangerous than Type I.
Question 5
The nurse looks at a telemetry monitor and observes that the atrial rate is 80
beats/minute and regular, while the ventricular rate is 35 beats/minute and
regular. There is absolutely no relationship between the P waves and the QRS
complexes. This indicates which condition?
A) Mobitz Type II
B) First-degree AV block
C) Third-degree AV Block (Complete Heart Block)
D) Premature Junctional Contractions
Correct Answer: C) Third-degree AV Block (Complete Heart Block)
Explanation: Third-degree heart block represents a complete dissociation
between the atria and ventricles. Both pacemakers fire regularly, but
independently of each other, meaning P waves will appear to "walk through"
the QRS complexes without any fixed PR interval relation.
Question 6
A telemetry strip reveals a regular rhythm with a rate of 38 beats/minute. P
waves are completely absent. The QRS complexes are narrow, measuring 0.08
2026 Test Bank: 180 Verified Questions &
Rationales (Graded A+)
Question 1
A patient’s telemetry monitor displays a rhythm with a rate of 72 beats/minute,
regular RR intervals, a PR interval of 0.16 seconds, and a QRS duration of 0.08
seconds. However, there is a completely upright P wave preceding every QRS
complex. How should the nurse document this rhythm?
A) First-degree AV block
,B) Normal Sinus Rhythm (NSR)
C) Sinus Bradycardia
D) Junctional Rhythm
Correct Answer: B) Normal Sinus Rhythm (NSR)
Explanation: Normal Sinus Rhythm is characterized by a heart rate between
60 and 100 beats/minute, regular rhythm, normal P waves (upright in lead II)
preceding every QRS complex, a PR interval between 0.12 and 0.20 seconds,
and a QRS complex duration under 0.12 seconds. All criteria are perfectly
met here.
Question 2
The nurse notes that a patient's telemetry strip shows a regular rhythm with a
rate of 140 beats/minute. P waves are present, upright, and identical, but they
are buried slightly in the preceding T wave due to the fast rate. The PR interval
is 0.14 seconds, and the QRS is 0.06 seconds. Which rhythm is present?
A) Supraventricular Tachycardia (SVT)
B) Sinus Tachycardia
C) Atrial Flutter
D) Ventricular Tachycardia
Correct Answer: B) Sinus Tachycardia
Explanation: Sinus tachycardia matches all the criteria of normal sinus
rhythm except that the rate is between 101 and 150 beats/minute. Because the
P waves are still clearly driving the rhythm and have a normal, consistent
morphology and normal PR interval, it is classified as sinus tachycardia
rather than SVT.
,Question 3
While analyzing a telemetry strip, the nurse observes a progressive lengthening
of the PR interval until a QRS complex is completely dropped. After the
dropped beat, the cycle repeats. What is the correct interpretation of this
rhythm?
A) Mobitz Type II (Second-degree AV block)
B) Mobitz Type I / Wenckebach (Second-degree AV block)
C) Third-degree AV block
D) First-degree AV block
Correct Answer: B) Mobitz Type I / Wenckebach (Second-degree AV block)
Explanation: Mobitz Type I (Wenckebach) is characterized by a progressive
prolongation of the PR interval on consecutive beats until an atrial impulse is
completely blocked and a QRS complex is dropped ("longer, longer, longer,
drop, now you have a Wenckebach").
Question 4
A patient's telemetry shows a sudden dropped QRS complex without any prior
warning. The PR intervals of the conducted beats remain completely constant
and normal before the drop. Which conduction block is occurring?
A) First-degree AV block
B) Mobitz Type I (Wenckebach)
C) Mobitz Type II (Second-degree AV block)
D) Complete Heart Block
, Correct Answer: C) Mobitz Type II (Second-degree AV block)
Explanation: In Second-degree AV Block Type II (Mobitz II), the PR
intervals of conducted beats remain constant. The block occurs below the AV
node, causing random or patterned (e.g., 2:1, 3:1) dropped QRS complexes
without warning, making it much more dangerous than Type I.
Question 5
The nurse looks at a telemetry monitor and observes that the atrial rate is 80
beats/minute and regular, while the ventricular rate is 35 beats/minute and
regular. There is absolutely no relationship between the P waves and the QRS
complexes. This indicates which condition?
A) Mobitz Type II
B) First-degree AV block
C) Third-degree AV Block (Complete Heart Block)
D) Premature Junctional Contractions
Correct Answer: C) Third-degree AV Block (Complete Heart Block)
Explanation: Third-degree heart block represents a complete dissociation
between the atria and ventricles. Both pacemakers fire regularly, but
independently of each other, meaning P waves will appear to "walk through"
the QRS complexes without any fixed PR interval relation.
Question 6
A telemetry strip reveals a regular rhythm with a rate of 38 beats/minute. P
waves are completely absent. The QRS complexes are narrow, measuring 0.08
