Figure 2. EKG shows underlying atrial flutter with 2:1 block and aberrancy after intravenous administration of 50 mEq of sodium bicarbonate

From

A Classical Wide Complex Tachycardia due to Propafenone Toxicity; Uncommon Side Effect of a Commonly Used Medication

Hammam Shereef, Mohamedanwar Ghandour, Sarah Abdelsamad, Ahmed Subahi, Ahmed S Yassin, Luis Afonso

American Journal of Medical Case Reports. 2021, 9(4), 229-231 doi:10.12691/ajmcr-9-4-6