by Mark Pollet, MD, Yochai Birnbaum, MD, and Alireza Nazeri, MD
We present a finding in a 61-year-old woman whose St. Jude Medical dual-chamber permanent pacemaker had been implanted to treat symptomatic bradycardia. The pacemaker, programmed in DDD mode, had a lower rate limit of 60 beats/min and an upper limit of 120 beats/min, a paced atrioventricular (AV) delay period of 250 ms, and a sensed AV delay period of 225 ms.
The Focus on ECGs section, published in the Texas Heart Institute Journal, presents a challenging ECG, a quiz, and a short comment on the interpretation of the ECG. This blog provides a collaborative opportunity to discuss each case in an effort to share the knowledge and the art of interpreting ECGs. Each discussion will close 2 weeks after publication.
