A 66-year-old woman with a history of diabetes mellitus, hyperlipidemia, and rheumatoid arthritis presents to her primary care physician with concerns regarding intermittent lightheadedness. She has not experienced syncope. With the lightheadedness, she has noted her heart rate to be slow, often at ≈40 bpm. She denies any other cardiac symptoms. While in the office, she has the sudden onset of lightheadedness and an ECG is obtained.
What is the diagnosis?
To submit your diagnosis, go to http://circ.ahajournals.org/letters/submit/circulationaha;128/13/1480. The diagnosis will follow in next week’s issue (October 1).
- © 2013 American Heart Association, Inc.