This ECG shows P waves that are not always associated with a QRS complex. This is called "AV dissociation" and occurs in complete heart block (a.k.a. 3rd degree heart block). In this situation ...

Normal sinus rhythm 3rd degree AV block (complete heart block) Osborne waves consistent with hypothermia Non-specific ST-T wave abnormalities The ECG findings of hypothermia include a the classic ...