title: [Cardiac surgery for the patients with hyperthyroidism].
abstract: Since open heart surgery may cause thyrotoxic crisis during the perioperative period in patients with hyperthyroidism, close monitoring and control are needed. We performed open heart surgery in 2 patients with hyperthyroidism, and good results were obtained. A 71-year-old patient with mitral valve insufficiency underwent mitral valve repair by replacement of chordae tendineae with polytetrafluoroethylene sutures and annuloplasty with a Duran's Ring. The other 20-year-old patient with aortic valve insufficiency underwent aortic valve replacement with an SJM valve. In the two patients, cardiopulmonary bypass for a prolonged period was required during surgery. However, thyrotoxic crisis could be prevented by controlling thyroid function by preoperative treatment with anti-thyroid agents, concurrent medication with Lugol's iodine solution immediately before surgery and re-administration of anti-thyroid agents early after surgery.
authors.affiliation: Department of Cardiac Surgery, Shiga Medical Center for Adults, Shiga, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Onoe
authors.forename: T
authors.initials: T
authors.lastname: Magara
authors.forename: Y
authors.initials: Y
authors.lastname: Yamamoto
authors.forename: T
authors.initials: T
authors.lastname: Nojima
mesh_terms: D000328:Adult; D000368:Aged; D001021:Aortic Valve / Q000601:surgery; D001022:Aortic Valve Insufficiency / Q000601:surgery*; D006348:Cardiac Surgical Procedures / Q000379:methods; D005260:Female; D019918:Heart Valve Prosthesis Implantation; D006801:Humans; D006980:Hyperthyroidism / Q000150:complications*; D008297:Male; D008943:Mitral Valve / Q000601:surgery; D008944:Mitral Valve Insufficiency / Q000601:surgery*; D013958:Thyroid Crisis / Q000517:prevention & control