title: Unstable angina with normal coronary angiography in hyperthyroidism: a case report.
abstract: Hyperthyroidism is associated with an increase in myocardial oxygen consumption that, due to an imbalance of oxygen demand and supply, can cause angina. However, subclinical hyperthyroidism rarely presents as chest pain in the resting state. Herein, we present a case of subclinical hyperthyroidism involving a 58-year-old male who complained of frequent chest tightness and typical electrocardiographic changes while in a resting state. Coronary angiography showed no significant lesion. Laboratory data showed that the patient suffered from hyperthyroidism, for which he was successfully treated with anti-thyroid agents. We are reminded that typical chest pain might be the first symptom of hyperthyroidism.
authors.affiliation: Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.
authors.forename: Tsung-Hsien
authors.initials: TH
authors.lastname: Lin
authors.forename: Ho-Ming
authors.initials: HM
authors.lastname: Su
authors.forename: Wen-Chol
authors.initials: WC
authors.lastname: Voon
authors.forename: Wen-Ter
authors.initials: WT
authors.lastname: Lai
authors.forename: Sheng-Hsiung
authors.initials: SH
authors.lastname: Sheu
mesh_terms: D000789:Angina, Unstable / Q000150:complications / Q000175:diagnosis* / Q000503:physiopathology; D013956:Antithyroid Agents / Q000627:therapeutic use; D002637:Chest Pain / Q000209:etiology; D017023:Coronary Angiography; D004562:Electrocardiography; D006801:Humans; D006980:Hyperthyroidism / Q000150:complications* / Q000188:drug therapy / Q000473:pathology; D008297:Male; D008713:Methimazole / Q000627:therapeutic use; D008875:Middle Aged; D016896:Treatment Outcome
chemical_list: D013956:Antithyroid Agents; D008713:Methimazole