Mobitz type 1 (also called a Wenckebach block), which may or may not cause symptoms, and Mobitz type 2, which can cause ...

The first is called Mobitz type 1. It is less serious and is unlikely to cause symptoms. The second type of second-degree heart block — Mobitz 2 — is more serious and can lead to: To diagnose ...

In second-degree atrioventricular nodal block — also known as Wenckebach block or Mobitz Type I AV block ... This is called 2:1 AV block, as depicted below: When 2:1 AV block is present ...

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 ...