ATI Comprehensive 2024 Exit Exam with NGN Related

Review ATI Comprehensive 2024 Exit Exam with NGN related questions and content

Which of the following dysrhythmias is the client displaying?

  • A. First-degree atrioventricular block
  • B. Complete heart block
  • C. Premature atrial complexes
  • D. Atrial fibrillation
Correct Answer: A

Rationale: The correct answer is A: First-degree atrioventricular block. This dysrhythmia is characterized by a delay in conduction at the atrioventricular node, causing a prolonged PR interval (>0.20 sec) on ECG. It is a benign condition and does not typically require treatment unless symptomatic. Choices B and D are more serious dysrhythmias that have different ECG patterns and clinical implications. Complete heart block (Choice B) presents with a lack of conduction between the atria and ventricles, leading to a slow ventricular rate. Atrial fibrillation (Choice D) is characterized by rapid, irregular atrial depolarizations without effective atrial contractions. Premature atrial complexes (Choice C) are early ectopic atrial beats that appear as abnormal P waves on ECG but do not cause significant conduction delays.