Abstract
Coronary artery spasm (CAS) defined by severe reversible focal or diffuse vasoconstriction, plays an essential role in the pathophysiology of acute coronary syndrome but is not very common in the clinic. Due to its transience, it is difficult to diagnose CAS directly, many patients are diagnosed by clinical experience. Here, we report the diagnosis and treatment of a rare case of simultaneous total occlusion due to spasm of the two main coronary arteries by coronary angiography (CAG). A 47-year-old man with no medical history was admitted to our emergency room complaining of sudden-onset chest pain lasting 3 hours. Emergency CAG showed total occlusion of the proximal left anterior descending artery and right coronary artery. Acute myocardial infarction caused by CAS was diagnosed, according to CAG findings and test results. Intracoronary injection of nitroglycerin and anti-spasm medication. The patient was discharged on the 8th day with complete resolution of symptoms and normalization of the electrocardiography findings. No ischemic events occurred during a follow-up for 27 months. This case highlights the significance of identifying CAS in patients with acute myocardial infarction and avoiding blind interventional stent therapy, which requires closer attention from clinicians.
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