RN NCLEX Practice Questions Related

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The nurse is assessing an ECG strip of a 42-year-old client and finds a regular rate greater than 100, a normal QRS complex, a normal P wave in front of each QRS, a PR interval between 0.12 and 0.20 seconds, and a P: QRS ratio of 1:1. What is the nurse's interpretation of this rhythm?

  • A. Premature atrial complex
  • B. Sinus tachycardia
  • C. Atrial flutter
  • D. Supraventricular tachycardia
Correct Answer: B

Rationale: A regular rate >100 with normal P waves, QRS complexes, and PR interval indicates sinus tachycardia, a common response to stress, fever, or hypoxia.