Fig. 4

The spasm provocation test. a and b Baseline coronary angiography. c and d Intracoronary infusion of ergonovine induced a severe spasm in the left coronary artery, except for the stented lesion; the left circumflex artery was occluded. e and f Intracoronary infusion of isosorbide dinitrate completely resolved the coronary vasospasm. EES everolimus-eluting stent, Erg ergonovine, ISDN isosorbide dinitrate