Figure 2. ECG approx. 24 hours after admission, serum potassium - 5.0 mmol/L. Irregularly irregular rhythm with LBBB, no P waves, and a widened QRS complex. (EGC speed 25mm/sec)

From

A Spontaneous Cardioversion of Permanent Atrial Fibrillation to Sinus Rhythm Induced by Hyperkalemia

Elene Shengelia, Gvantsa Kvariani, Liza Goderdzishvili, Ketevan Kapanadze, Bezhan Khelidze, Ketevan Tsanava

American Journal of Medical Case Reports. 2025, 13(3), 12-16 doi:10.12691/ajmcr-13-3-1