Abstract
We report a case of coronary microvascular spasm assessed by ATP stress
MCE (myocardial contrast electrocardiography). The patient had chest
pain, but the coronary angiography was normal. There was apical
ventricular septal perfusion delay before ATP stress, and the perfusion
was significantly improved at peak stress, which was similar to the
radionuclide myocardial perfusion characteristics of coronary
microvascular spasm, In the recovery period, the flow spectrum
resistance of the distal coronary artery of the left anterior descending
artery increased compared with that before stress, which further
confirmed that local coronary microvascular spasm was induced after
vasodilation.