title: Intraoperative QRS-interval changes.
authors.forename: N H
authors.initials: NH
authors.lastname: Nguyen
authors.forename: J F
authors.initials: JF
authors.lastname: Mayhew
mesh_terms: D004562:Electrocardiography; D006339:Heart Rate; D006801:Humans; D006947:Hyperkalemia / Q000097:blood / Q000503:physiopathology / Q000601:surgery / Q000628:therapy*; D007431:Intraoperative Complications / Q000097:blood / Q000503:physiopathology / Q000628:therapy*