title: The atrial repolarization wave and spurious ST segment deviation.
mesh_terms: D001145:Arrhythmias, Cardiac / Q000175:diagnosis / Q000209:etiology*; D002763:Cholecystectomy; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008875:Middle Aged; D011183:Postoperative Complications