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Updated: Jan 21, 2026

EEG Mu Rhythm in Typical and Atypical Development
Published on: April 9, 2014
An irregular, extremely broad QRS complex rhythm
Adriaan Wilgenhof1, Vincent Michiels1, Bernard Cosyns1
1Department of cardiology, Universitair Ziekenhuis Brussel, Laarbeeklaan 101, 1090 Brussels, Belgium.
Abstract:
We report a case of a 74-year-old lady admitted to the emergency department with a very broad QRS complex caused by flecainide intoxication due to acute renal failure. Appropriate recognition of the ECG changes and symptoms provoked by flecainide intoxication permitted quick directed treatment with intravenous administration of high dose sodium bicarbonate, which resolved the QRS elongation.
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