Table 1.

Cardiac manifestations in hyperkalemia.

Electrocardiographic changes	Conduction abnormalities	Cardiac arrhythmias
tall peaked T-waves with shortened QT-interval prolonged PR- and QRS-intervals with small or disappearing P-waves further prolongation of the QRS-interval to a sine wave pattern	right or left bundle branch block bifascicular block advanced atrioventricular block type I Brugada pattern (characterized by high takeoff ≥2 mm coved ST-segment elevation followed by a negative T-wave in at least two precordial leads)	sinus bradycardia, sinus arrest slow idioventricular rhythms ventricular tachycardia, ventricular fibrillation asystole