Relation of basal coronary tone and vasospastic activity in patients with variant angina.


OBJECTIVE To examine the vasoconstrictor response to ergonovine and the vasodilator response to isosorbide dinitrate in spastic and non-spastic coronary segments from 31 patients undergoing serial angiographic follow up of variant angina. METHODS Coronary angiograms and ergonovine provocation tests were repeated at an interval of 45 (SD 15) months apart… (More)


5 Figures and Tables