Critical presentation of bradycardia, renal failure, atrioventricular nodal blockade, shock, and hyperkalemia syndrome: A case report

Figure 1 Electrocardiogram. A: At the time of presentation prior to transcutaneous pacing. Wide complex irregularly irregular rhythm without discernable p-waves and ventricular rate of 38 beats per minute, concerning for new atrial fibrillation with complete left bundle branch block. ST and T waves do not show any sign of ischemia; B: At the time of discharge. Normal sinus rhythm with ventricular rate of 100 beats per minute and resolution of left bundle branch block.