69 year old male patient monitored during resection of bilateral iliac aneurysms.
Rhythm analysis indicates atrial flutter (AFL) with an intraventricular defect.
This encounter shows a regular rhythm with no P waves present. Small 'flutter' or sawtooth waves can be seen. These signs are indicative of atrial flutter or AFL. The atria contract rapidly, with most electrical impulses being blocked before reaching the ventricles. This leads to a very high and unproductive atrial rate, but throttled ventricular rate. Atrial flutter can cause an increased risk of blood clots. Atrial fibrillation is similar, but typically presents as an irregular rhythm with a higher rate than AFL.
Source: PhysioNet MGH025