1. Coronary Spasm Occurs in Coronary Artery with Diffuse Intima Thickeing without Lipd and/or Calcification:Evaluation with Intravascular Optical Coherence Tomography

    Coronary spasm (CS) plays an important role in the pathogenesis of many kinds of ischemic heart disease. However, morphological characteristics of coronary artery of CS remain unknown. We evaluated 37 patients with coronary spastic angina (CSA) who underwent diagnostic acetylcholine (ACh) provocation test, and 2 acute coronary syndrome patients suspected to have severe CS. The intravascular optical coherence tomography (OCT) was performed after complete dilatation of coronary artery in all patients and additionally performed during ACh-induced CS in 4 patients. Based on the ACh provocation test, 23 patients who developed CS and ischemic ECG changes were diagnosed as coronary spastic ...
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