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CRAT Review Questions and Answers | Latest Update | 2024/2025 | Already Passed
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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 ...

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  • August 19, 2024
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  • 2024/2025
  • Exam (elaborations)
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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?




✔✔ Atrial fibrillation shows irregularly irregular ventricular responses, while atrial flutter

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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