The large variety of ECG patterns seen with vagal AV block depends on the interplay of several factors influencing the net vagal effect in: (1) the moment in the cycle when the vagal effect occurs, (2 ...

and Mobitz type 2, which can cause problems pumping blood and irregular heartbeats. Heart blocks are disruptions in the electrical signals that regulate and coordinate movements of the heart ...

In second-degree type II AV nodal block (a.k.a. Mobitz Type II AV block), the AV node becomes completely refractory to conduction on an intermittent basis. For example, three consecutive P waves ...