title: Coronary arterial spasm in single right coronary artery.
abstract: We presented a case of anomalous single-coronary artery detected incidentally during routine coronary angiography. A 32-year-old male Chinese patient presented with recurrent pre-syncope and six episodes of syncope. Coronary angiography and coronary-computed tomography (CT)-angiography performed by a dual-source computed tomography (DSCT) revealed that the patient had a single large right coronary artery. A moderately large branch originated from the proximal part of the single right coronary artery and extended to the left, passing the anterior to the pulmonary artery, and divided into the anterior descending artery branch and circumflex branch at the base of the left auricular appendage. The episodes of the syncope were suspected to be caused by coronary arterial spasm, so this patient was on a regimen of 30 mg of diltiazem every 6 h and had no recurrence of syncope during follow-up.
authors.affiliation: Department of Cardiovascular Medicine, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China. enzhijia@yahoo.cn
authors.forename: En-zhi
authors.initials: EZ
authors.lastname: Jia
authors.forename: Qi-jun
authors.initials: QJ
authors.lastname: Shan
authors.forename: Zhi-jian
authors.initials: ZJ
authors.lastname: Yang
authors.forename: Tie-bing
authors.initials: TB
authors.lastname: Zhu
authors.forename: Lian-sheng
authors.initials: LS
authors.lastname: Wang
authors.forename: Ke-jiang
authors.initials: KJ
authors.lastname: Cao
authors.forename: Wen-zhu
authors.initials: WZ
authors.lastname: Ma
mesh_terms: D000328:Adult; D017023:Coronary Angiography / Q000379:methods; D003324:Coronary Artery Disease / Q000000981:diagnostic imaging; D003329:Coronary Vasospasm / Q000000981:diagnostic imaging*; D003331:Coronary Vessels / Q000473:pathology*; D004110:Diltiazem / Q000494:pharmacology; D006801:Humans; D008297:Male; D013575:Syncope / Q000175:diagnosis; D013997:Time Factors; D014057:Tomography, X-Ray Computed / Q000379:methods; D016896:Treatment Outcome
chemical_list: D004110:Diltiazem