A 55-year-old man came to the hospital because of chest pain, mostly occurr
ing in the early morning at rest. He had to get isosorbide dinitrate intrav
enously with continuous infusion. Following ergonovine provocation test, to
tal occlusion of mid-left anterior descending artery was identified with ma
rked elevation of ST segment as exercise test showed despite isosorbide din
itrate. (C) 2001 Elsevier Science Ireland Ltd. All rights reserved.