Dysrhythmias: Interpretation and Nursing Actions · NCLEX Exam

What do early P waves with narrow QRS complexes and pauses after the beat indicate on an ECG?

  1. Atrial flutter with sawtooth waves
  2. Premature atrial contractions (PACs)
  3. Ventricular tachycardia with wide QRS
  4. Junctional escape rhythm with absent P
Show answer and explanation

Correct answer: Premature atrial contractions (PACs)

PACs appear as early P waves usually with a narrow QRS and a compensatory pause; often benign but should be monitored for frequency and patient symptoms.

Difficulty: Medium Question 16 of 20

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