cardiac syndrome X

cardiac syndrome X

Ischemic chest pain in patients with normal coronary angiography results but abnormal findings on stress testing or myocardial imaging.

cardiac syndrome X

An informal term for the condition of a patient who suffers chest pain typical of angina but who shows no radiological evidence of coronary artery disease and electrocardiographic changes only on exercise stress testing. Some experts believe that this condition is due to transient narrowing of small coronary artery branches (microvascular spasm).