CMC Cardiac Medicine Certification

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.