A Good Prognosis It can be concerning to learn you have second-degree heart block. Untreated, this condition can lead to severe and even fatal complications. But the outlook is positive. Mobitz ...

This is called "AV dissociation" and occurs in complete heart block (a.k.a. 3rd degree heart block). In this situation, the P waves have their own rate (tachycardic here) and the QRS complex have ...