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 ...

Normal sinus rhythm 3rd degree AV block (complete heart block) Right bundle branch block Left anterior fascicular block Note that the combination of a right bundle branch block and a left anterior ...

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 type 1 heart block ...