• J Cardiol Cases · Feb 2014

    Acute myocardial infarction caused by left anterior descending artery occlusion presenting as inferior ST elevation and anterior ST depression.

    • Tsuyoshi Honda, Kazuteru Fujimoto, Yuji Miyao, Hidenobu Koga, and Masanobu Ishii.
    • Department of Cardiology, Cardiovascular Center, National Hospital Organization Kumamoto Medical Center, Kumamoto, Japan.
    • J Cardiol Cases. 2014 Feb 1; 9 (2): 67-70.

    AbstractWe report a case of acute myocardial infarction caused by left anterior descending artery occlusion presenting as ST elevation in the inferior leads and ST depression in the precordial leads, suggesting an involvement of the right coronary artery (RCA). However, coronary angiography (CAG) showed a complete occlusion of the proximal left anterior descending (LAD) coronary artery and collaterals from the left circumflex coronary artery and the RCA. Although he underwent primary percutaneous coronary intervention (PCI), he had chest pain at four days after primary PCI. His electrocardiogram (ECG) showed precordial ST elevation, suggesting an involvement of the LAD. Emergent CAG showed a complete occlusion of the proximal LAD without collaterals, but his ECG showed precordial ST elevation that was different from ST changes seen on admission. These unusual ST-segment changes might be associated with a weaker anterior ischemia due to collaterals and a strong inferior ischemia due to wrapped LAD artery. .

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