RELIAS DYSRHYTHMIA|BASIC A TEST |ACTUAL EXAM WITH QUESTIONS AND CORRECT ANSWERS | ACCURATE ANSWERS|UPDATED VERSION 2025 Q&A | WITH RATIONALE

RELIAS DYSRHYTHMIA|BASIC A TEST |ACTUAL EXAM
WITH QUESTIONS AND CORRECT ANSWERS | ACCURATE
ANSWERS|UPDATED VERSION 2025 Q&A | WITH
RATIONALE

, RELIAS DYSRHYTHMIA|BASIC A TEST |ACTUAL EXAM
WITH QUESTIONS AND CORRECT ANSWERS | ACCURATE
ANSWERS|UPDATED VERSION 2025 Q&A | WITH
RATIONALE

1. What is the normal intrinsic rate of the SA node?
A. 20-40 bpm
B. 40-60 bpm
C. 60-100 bpm
D. 100-120 bpm
The sinoatrial (SA) node is the heart’s primary pacemaker and normally fires at a
rate of 60-100 beats per minute.

2. Which lead is typically used for rhythm strip interpretation?
A. Lead I
B. Lead II
C. Lead III
D. aVR
Lead II closely aligns with the heart’s conduction pathway, making it ideal for
rhythm interpretation.

3. What does the PR interval represent?
A. Ventricular depolarization
B. Time from atrial to ventricular depolarization
C. Atrial repolarization
D. Ventricular repolarization

, The PR interval reflects the time the electrical impulse takes to travel from the
atria to the ventricles.

4. Which rhythm has no identifiable P waves and irregularly irregular
R-R intervals?
A. Atrial flutter
B. Atrial fibrillation
C. Ventricular tachycardia
D. Sinus tachycardia
Atrial fibrillation is characterized by the absence of P waves and an irregularly
irregular rhythm.

5. What is the normal duration of the QRS complex?
A. 0.04-0.06 seconds
B. 0.06-0.10 seconds
C. 0.10-0.14 seconds
D. 0.14-0.20 seconds
A normal QRS duration indicates proper ventricular conduction and is typically
less than 0.12 seconds.

6. What is the rate in a 6-second strip if there are 8 QRS complexes?
A. 60 bpm
B. 80 bpm
C. 90 bpm
D. 100 bpm
To calculate rate: multiply the number of QRS complexes in 6 seconds by 10 (8 x 10
= 80 bpm).