77 year old male patient monitored during colectomy. Patient has a history of coronary artery disease.
Rhythm analysis indicates a normal sinus rhythm (NSR). First degree heart block is present, as well as a left bundle branch block.
This encounter shows normal sinus rhythm (NSR) with P waves and a regular rhythm. The PR interval is greater than 200 milliseconds, making this first degree heart block. Additionally, the QRS is wider than 120 milliseconds, leading to a further investigation of heart blocks. The QRS to the left of the J point in lead V1 is negative, making this a left bundle branch block.
Source: PhysioNet MGH033