RELIAS DYSRHYTHMIA EXAM B | ADVANCED WITH
MEASUREMENTS B COMPREHENSIVE PRACTICE
EXAM LATEST UPDATED ACTUAL FINAL EXAM WITH
ALL POSSIBLE AND MOST TESTED 100 PRACTICE
QUESTIONS AND 100% CORRECT VERIFIED ANSWERS
FULLY SOLVED WITH DETAILED RATIONALES PLUS
EXPERT ANSWER KEY 2026-2027 FINAL EXAM
UPDATED VERSION 100% GUARANTEED PASS MOST
RECENT!!!
1. What is the normal PR interval measurement?
A. 0.06–0.10 seconds
B. 0.12–0.20 seconds
C. 0.20–0.30 seconds
D. 0.04–0.08 seconds
Correct Answer: B
Rationale: The normal PR interval is 0.12 to 0.20
seconds (3 to 5 small boxes). It represents the time
from atrial depolarization to ventricular
depolarization.
,2. Which rhythm is characterized by a regular rate
of 150–250 bpm with a narrow QRS complex and
sudden onset/offset?
A. Atrial fibrillation
B. Ventricular tachycardia
C. Supraventricular tachycardia
D. Sinus bradycardia
Correct Answer: C
Rationale: Supraventricular tachycardia (SVT) is a
regular narrow-complex tachycardia with sudden
onset, often due to reentry. Atrial fibrillation is
irregular, VT is wide-complex, and sinus bradycardia
is slow.
3. What is the QRS duration measurement for a
normal sinus beat?
A. 0.04–0.10 seconds
B. 0.12–0.20 seconds
C. 0.20–0.25 seconds
D. 0.08–0.12 seconds
Correct Answer: A
Rationale: Normal QRS duration is 0.04–0.10
seconds (1 to 2.5 small boxes). Prolonged QRS
,(>0.12 sec) indicates bundle branch block or
ventricular origin.
4. In atrial flutter, the atrial rate is typically:
A. 60–100 bpm
B. 100–150 bpm
C. 250–350 bpm
D. 350–450 bpm
Correct Answer: C
Rationale: Atrial flutter has an atrial rate of 250–
350 bpm with a characteristic sawtooth pattern.
Ventricular rate depends on the conduction ratio.
5. Which dysrhythmia is most likely to produce a
pulse deficit?
A. Sinus arrhythmia
B. Atrial fibrillation
C. Premature ventricular contraction
D. First-degree AV block
Correct Answer: B
Rationale: Atrial fibrillation causes a pulse deficit
because not all atrial impulses conduct to the
, ventricles with sufficient force to produce a palpable
pulse. The radial pulse is slower than the apical rate.
6. The QT interval should be corrected for heart rate
using which formula?
A. QTc = QT / √RR
B. QTc = QT × RR
C. QTc = QT + 0.1 × RR
D. QTc = QT – RR
Correct Answer: A
Rationale: Bazett’s formula: QTc = QT / √RR.
Prolonged QTc >0.44 seconds (males) or >0.46
seconds (females) increases risk of torsades de
pointes.
7. What is the first-line treatment for unstable
ventricular tachycardia with a pulse?
A. Amiodarone
B. Lidocaine
C. Synchronized cardioversion
D. Defibrillation
Correct Answer: C
Rationale: Unstable VT with a pulse requires
MEASUREMENTS B COMPREHENSIVE PRACTICE
EXAM LATEST UPDATED ACTUAL FINAL EXAM WITH
ALL POSSIBLE AND MOST TESTED 100 PRACTICE
QUESTIONS AND 100% CORRECT VERIFIED ANSWERS
FULLY SOLVED WITH DETAILED RATIONALES PLUS
EXPERT ANSWER KEY 2026-2027 FINAL EXAM
UPDATED VERSION 100% GUARANTEED PASS MOST
RECENT!!!
1. What is the normal PR interval measurement?
A. 0.06–0.10 seconds
B. 0.12–0.20 seconds
C. 0.20–0.30 seconds
D. 0.04–0.08 seconds
Correct Answer: B
Rationale: The normal PR interval is 0.12 to 0.20
seconds (3 to 5 small boxes). It represents the time
from atrial depolarization to ventricular
depolarization.
,2. Which rhythm is characterized by a regular rate
of 150–250 bpm with a narrow QRS complex and
sudden onset/offset?
A. Atrial fibrillation
B. Ventricular tachycardia
C. Supraventricular tachycardia
D. Sinus bradycardia
Correct Answer: C
Rationale: Supraventricular tachycardia (SVT) is a
regular narrow-complex tachycardia with sudden
onset, often due to reentry. Atrial fibrillation is
irregular, VT is wide-complex, and sinus bradycardia
is slow.
3. What is the QRS duration measurement for a
normal sinus beat?
A. 0.04–0.10 seconds
B. 0.12–0.20 seconds
C. 0.20–0.25 seconds
D. 0.08–0.12 seconds
Correct Answer: A
Rationale: Normal QRS duration is 0.04–0.10
seconds (1 to 2.5 small boxes). Prolonged QRS
,(>0.12 sec) indicates bundle branch block or
ventricular origin.
4. In atrial flutter, the atrial rate is typically:
A. 60–100 bpm
B. 100–150 bpm
C. 250–350 bpm
D. 350–450 bpm
Correct Answer: C
Rationale: Atrial flutter has an atrial rate of 250–
350 bpm with a characteristic sawtooth pattern.
Ventricular rate depends on the conduction ratio.
5. Which dysrhythmia is most likely to produce a
pulse deficit?
A. Sinus arrhythmia
B. Atrial fibrillation
C. Premature ventricular contraction
D. First-degree AV block
Correct Answer: B
Rationale: Atrial fibrillation causes a pulse deficit
because not all atrial impulses conduct to the
, ventricles with sufficient force to produce a palpable
pulse. The radial pulse is slower than the apical rate.
6. The QT interval should be corrected for heart rate
using which formula?
A. QTc = QT / √RR
B. QTc = QT × RR
C. QTc = QT + 0.1 × RR
D. QTc = QT – RR
Correct Answer: A
Rationale: Bazett’s formula: QTc = QT / √RR.
Prolonged QTc >0.44 seconds (males) or >0.46
seconds (females) increases risk of torsades de
pointes.
7. What is the first-line treatment for unstable
ventricular tachycardia with a pulse?
A. Amiodarone
B. Lidocaine
C. Synchronized cardioversion
D. Defibrillation
Correct Answer: C
Rationale: Unstable VT with a pulse requires
