<prompt> Fixed PR interval with occasional dropped beats in 2:1, 3:1 or 4:1 pattern with wide QRS complex is seen in:WenckebachMobitz type IIWPW syndrome with reentrant tachycardiaComplete hea block with atrial fibrillation  <response>: Type 1 Second-degree AV block, Mobitz Type I Wenckebach periodicity characterized by progressive prolongation of the PR interval followed by a blocked P wave i.e., a dropped QRS complex. After the dropped QRS complex, the PR interval resets and the cycle repeats. Mobitz II hea block is characterized intermittently nonconducted P waves not preceded by PR prolongation and not followed by PR shoening. Ref: Harrison, Edition 18, Page -1871 