title: Alternans of the repolarization wave in a case of hypochloremic alkalosis with hypopotassemia.
abstract: A case of profound hypochloremic alkalosis with hypopotassemia is reported, showing electrocardiographic changes of electrical alternans of the repolarization wave (probably the U wave) without any change in the QRS complex. Transient concomitant P-pulmonale was noted. Hypopotassemia is discussed as a possible mechanism for the development of the electrical alternans.
mesh_terms: D000200:Action Potentials; D000293:Adolescent; D000471:Alkalosis / Q000150:complications*; D002712:Chlorides / Q000097:blood*; D004562:Electrocardiography; D006327:Heart Block / Q000209:etiology* / Q000503:physiopathology; D006329:Heart Conduction System / Q000503:physiopathology; D006801:Humans; D007008:Hypokalemia / Q000150:complications* / Q000503:physiopathology; D008297:Male
chemical_list: D002712:Chlorides