A teenaged girl presented with recurrent episodes of chest and neck palpitations accompanied by headaches for 3 years, with sudden onset and offset. She had no specific medical or family history and had no treatment. A resting electrocardiogram (ECG) while symptomatic showed a wide QRS complex rhythm at a rate of 81 beats per minute (Figure 1A). After a short walk, symptoms disappeared and another ECG was recorded (Figure 1B). Physical examination and transthoracic echocardiography results were normal.
Combes N, Maltret A, Waldmann V. Unusual Wide QRS Complex Rhythm in a Teenager. JAMA Cardiol. Published online January 27, 2021. doi:10.1001/jamacardio.2020.7091
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