The value of ATP stress MCE in evaluating myocardial microvascular spasm
-- a case report 1
Abstract
We reported a patient with chest pain, but the coronary angiography was
normal. ATP stress myocardial contrast electrocardiography(MCE) was
performed. There was apical ventricular septal perfusion delay before
ATP stress, and the perfusion delay areas were significantly reduced at
the peak period, which was similar to the “reverse redistribution”
perfusion characteristics of nuclear myocardium in coronary vasospasm,
The areas of delayed perfusion in the recovery period were larger than
that before stress, the increase of blood flow spectrum resistance in
the distal segment of left anterior descending coronary artery and the
occurrence of chest pain all showed that ATP induced myocardial
microvascular spasm. The MCE perfusion characteristics and the changes
of coronary spectrum had certain clinical value in the diagnosis of
myocardial microvascular spasm.