CRAT Review Questions and Answers |
Latest Update | 2024/2025 | Already
Passed
When analyzing an ECG, what is the primary characteristic that indicates a normal sinus
rhythm?
The presence of a P wave before each QRS complex and a consistent rhythm.
What is the key difference between ...
CRAT Review Questions and Answers |
Latest Update | 2024/2025 | Already
Passed
When analyzing an ECG, what is the primary characteristic that indicates a normal sinus
rhythm?
✔✔ The presence of a P wave before each QRS complex and a consistent rhythm.
What is the key difference between atrial fibrillation and atrial flutter on an ECG?
presents with a regular rhythm but with a “sawtooth” pattern.
What should be the first step in evaluating a patient with a suspected ventricular tachycardia?
✔✔ Assess the patient’s hemodynamic stability and verify the presence of a wide QRS complex
tachycardia.
What does a wide QRS complex typically suggest in the context of an arrhythmia?
1
,✔✔ It may indicate a ventricular origin or a bundle branch block.
What is the significance of the QT interval in ECG analysis?
✔✔ Prolonged QT intervals can indicate an increased risk of life-threatening arrhythmias, such
as torsades de pointes.
How is a second-degree AV block type II typically identified on an ECG?
✔✔ It is characterized by a consistent P-R interval with intermittent failure of the QRS complex.
What is the main feature of a third-degree AV block on an ECG?
✔✔ Complete dissociation between atrial and ventricular activity, with independent rhythms for
each.
What does the presence of ST-segment elevation in the precordial leads indicate?
2
, ✔✔ It may signify an acute myocardial infarction.
How can you differentiate between a premature atrial contraction (PAC) and a premature
ventricular contraction (PVC) on an ECG?
✔✔ PACs originate from the atria and have a normal QRS complex, while PVCs originate from
the ventricles and present with a wide QRS complex.
What is the typical treatment approach for a patient with symptomatic bradycardia?
✔✔ Administer atropine or consider pacing if the bradycardia is severe and symptomatic.
How do you recognize a junctional rhythm on an ECG?
✔✔ It features a narrow QRS complex with absent or inverted P waves and a regular rhythm.
What is the role of an automated external defibrillator (AED) in managing patients with
suspected cardiac arrhythmias?
3
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