title: Electrocardiographic manifestations of hyperkalemia.
abstract: Hyperkalemia is one of the more common acute life-threatening metabolic emergencies seen in the emergency department. Early diagnosis and empiric treatment of hyperkalemia is dependent in many cases on the emergency physician's ability to recognize the electrocardiographic manifestations of hyperkalemia. The electrocardiographic manifestations commonly include peaked T-waves, widening of the QRS-complex, and other abnormalities of altered cardiac conduction. Peaked T-waves in the precordial leads are among the most common and the most frequently recognized findings on the electrocardiogram. Other "classic" electrocardiographic findings in patients with hyperkalemia include prolongation of the PR interval, flattening or absence of the P-wave, widening of the QRS complex, and a "sine-wave" appearance at severely elevated levels. A thorough knowledge of these findings is imperative for rapid diagnosis and treatment of hyperkalemia.
authors.affiliation: Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, USA.
authors.forename: A
authors.initials: A
authors.lastname: Mattu
authors.forename: W J
authors.initials: WJ
authors.lastname: Brady
authors.forename: D A
authors.initials: DA
authors.lastname: Robinson
mesh_terms: D000328:Adult; D004562:Electrocardiography; D004636:Emergency Service, Hospital; D005260:Female; D006801:Humans; D006947:Hyperkalemia / Q000150:complications / Q000175:diagnosis* / Q000188:drug therapy / Q000503:physiopathology; D007676:Kidney Failure, Chronic / Q000150:complications / Q000628:therapy; D008297:Male; D008875:Middle Aged; D011137:Polystyrenes / Q000627:therapeutic use; D006435:Renal Dialysis; D016896:Treatment Outcome
chemical_list: D011137:Polystyrenes; C003321:polystyrene sulfonic acid