title: [Moderate coronary lesion with severe vasospasm and the development of collateral circulation in a patient with effort angina and ST-segment depression].
abstract: Coronary collateral circulation usually develops as a consequence of recurrent ischemia associated with severe stenosis. In exceptional cases, it can develop with moderate coronary lesions if there is severe recurrent vasospasm. In this situation, the presenting clinical features of vasospastic angina (i.e., effort angina with ST-segment depression) can be identical to those of a severe permanent lesion. We present a patient who exhibited effort angina and ST-segment depression on treadmill testing. Angiography showed severe right coronary artery stenosis and the development of coronary collateral circulation from the other main artery. After repeated intracoronary bolus injection of nitroglycerin, only a moderate stenosis was still apparent and the collateral circulation had disappeared.
authors.affiliation: Unidad de Hemodinámica, Fundación Hospital Alcorcón, Madrid, Spain. psanz@fhalcorcon.es
authors.forename: Petra
authors.initials: P
authors.lastname: Sanz-Mayordomo
authors.forename: Manuel
authors.initials: M
authors.lastname: Alonso-Gutiérrez
authors.forename: Raquel
authors.initials: R
authors.lastname: Campuzano
authors.forename: Lorenzo
authors.initials: L
authors.lastname: López-Bescós
mesh_terms: D000787:Angina Pectoris / Q000150:complications* / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000503:physiopathology; D003097:Collateral Circulation; D017023:Coronary Angiography; D003326:Coronary Circulation; D023921:Coronary Stenosis / Q000150:complications* / Q000000981:diagnostic imaging / Q000188:drug therapy / Q000503:physiopathology; D003329:Coronary Vasospasm / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000209:etiology*; D004562:Electrocardiography; D005080:Exercise Test; D006801:Humans; D008297:Male; D008875:Middle Aged; D005996:Nitroglycerin / Q000008:administration & dosage; D014665:Vasodilator Agents / Q000008:administration & dosage
chemical_list: D014665:Vasodilator Agents; D005996:Nitroglycerin