1. Atrial flutter with a slow ventricular response
2. Right bundle branch block
When atrial flutter is seen with such a slow ventricular response (in this case, 9:1 conduction), there is concern for underlying complete heart block should the patient be restored to normal sinus rhythm with a cardioversion. This is especially true if no AV blocking medications were being taken at the time of this ECG. For a complete review of atrial flutter including the types and determining rotation, click the Atrial Flutter Review below.
