title: The difficult diagnosis of hypokalemia.
abstract: The electrocardiographic diagnosis of uncomplicated hypokalemia rests on ST segment depression, a decrease in T-wave amplitude, prominent U waves and a U-wave to T-wave ratio of greater than 1. The diagnosis is more difficult in a patient receiving digitalis, but the upsloping ST segment of digitalis can be distinguished from that of hypokalemia. The changes of hypokalemia are most apparent in leads V2 and V3.
mesh_terms: D001281:Atrial Fibrillation / Q000150:complications; D003937:Diagnosis, Differential; D004077:Digoxin / Q000009:adverse effects; D004562:Electrocardiography; D006801:Humans; D007008:Hypokalemia / Q000175:diagnosis* / Q000209:etiology
chemical_list: D004077:Digoxin