62 year old male who is asymptomatic.
Question 1: How can you tell this is Wenckebach?
-2nd degree AV block type I (Mobitz I)
-Av block, second degree-Mobitz type II (Wenckebach)
Question 1: There is progressive prolongation of the PR interval. Also, if you compare the last conducted PR interval before the pause with the first conducted PR interval after the pause, the change is more noticeable. This is an example of what is termed long-cycle Wenckebach, where there are relatively numerous P waves conducted prior to a dropped beat.