title: An unusual cause of high threshold values at pacemaker implantation.
abstract: An 81-year old man with third-degree AV block and weakness underwent an unsuccessful attempt to DDD pacemaker implant caused by hypothyroidism. Administration of thyroxin until he was euthyroid permitted implantation with normal stimulation thresholds.
authors.affiliation: Department of Medicine, Orebro Medical Center Hospital, Sweden.
authors.forename: K
authors.initials: K
authors.lastname: Emilsson
authors.forename: H
authors.initials: H
authors.lastname: Oddsson
authors.forename: M
authors.initials: M
authors.lastname: Allared
authors.forename: L
authors.initials: L
authors.lastname: Brorson
mesh_terms: D000368:Aged; D004562:Electrocardiography; D006327:Heart Block / Q000628:therapy*; D006801:Humans; D007037:Hypothyroidism / Q000150:complications* / Q000188:drug therapy; D008297:Male; D010138:Pacemaker, Artificial; D013974:Thyroxine / Q000627:therapeutic use; D017211:Treatment Failure
chemical_list: D013974:Thyroxine