Cardiac-Vascular Nursing Exam Prep II

Category - AACN Cardiac Vascular Nursing Practice Test

The nurse records the EKG of an asymptomatic patient. Which of the following EKG findings confirms the diagnosis of Wenckebach phenomena?
  1. No definite relation between P-wave and QRS complex
  2. Progressive lengthening of PR interval followed by a P wave without an associated QRS complex
  3. Prolonged PR interval with narrow QRS complex
  4. Prolonged PR interval with wide QRS complex
Explanation
Answer- B - The EKG finding of progressive lengthening of PR interval followed by a P wave without an associated QRS complex confirms the diagnosis of Wenckebach phenomena. Second-degree atrioventricular block type I, also known as Wenckebach or Mobitz I, is an asymptomatic dysrhythmia typically diagnosed on electrocardiogram which shows progressive lengthening of PR interval followed by a P wave without an associated QRS complex.
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