Relias Dysrhythmia Basic Test 35 Questions and Answers 2025 (Basic A
Dysr̀hythmia – Basic A
Dysrhythmia)
Question 1: Normal sinus rhythm
Rationale: The strip shows a regular rhythm with a rate between 60-100 bpm. There is one uniform P wave
before every QRS complex, the PR interval is constant and normal (0.12-0.20 sec), and the QRS complex is
narrow. This is the definition of normal sinus rhythm.
, Question 2: Sinus bradycardia
Rationale: The rhythm is regular, but the rate is less than 60 bpm. All other characteristics of normal sinus
rhythm are present: upright P waves, constant PR interval, and narrow QRS complexes.
Question 3: Idioventricular
Rationale: The rhythm is regular and slow (20-40 bpm). The QRS complex is wide and bizarre, indicating a
ventricular origin. There are no preceding P waves. This is a ventricular escape rhythm.
, Question 4: Atrial fibrillation
Rationale: The rhythm is "irregularly irregular" with no discernible pattern. There are no distinct P waves;
instead, the baseline shows fine, chaotic fibrillatory waves. The ventricular rate can vary.
Question 5: Sinus tachycardia
Rationale: The rhythm is regular with a rate greater than 100 bpm. There is one uniform P wave for every
QRS complex, a constant PR interval, and a narrow QRS. This indicates the SA node is firing faster than
normal.
Dysr̀hythmia – Basic A
Dysrhythmia)
Question 1: Normal sinus rhythm
Rationale: The strip shows a regular rhythm with a rate between 60-100 bpm. There is one uniform P wave
before every QRS complex, the PR interval is constant and normal (0.12-0.20 sec), and the QRS complex is
narrow. This is the definition of normal sinus rhythm.
, Question 2: Sinus bradycardia
Rationale: The rhythm is regular, but the rate is less than 60 bpm. All other characteristics of normal sinus
rhythm are present: upright P waves, constant PR interval, and narrow QRS complexes.
Question 3: Idioventricular
Rationale: The rhythm is regular and slow (20-40 bpm). The QRS complex is wide and bizarre, indicating a
ventricular origin. There are no preceding P waves. This is a ventricular escape rhythm.
, Question 4: Atrial fibrillation
Rationale: The rhythm is "irregularly irregular" with no discernible pattern. There are no distinct P waves;
instead, the baseline shows fine, chaotic fibrillatory waves. The ventricular rate can vary.
Question 5: Sinus tachycardia
Rationale: The rhythm is regular with a rate greater than 100 bpm. There is one uniform P wave for every
QRS complex, a constant PR interval, and a narrow QRS. This indicates the SA node is firing faster than
normal.
