Left main coronary artery spasm in a hyperthyroid patient with suspected acute coronary syndrome

Abstract

The left main coronary artery (LMCA) vasospasm is rare. We report a suspected acute coronary syndrome patient with hyperthyroidism who had LMCA vasospasm. Coronary angiogram showed 60% stenosis at LMCA. After administering nitroglycerin, re-angiography showed no significant stenosis. Then we evaluated LMCA lesion using intravascular ultrasound (IVUS) showing no significant stenosis. We considered that it was a LMCA vasospasm and may be assosiated with hyperthyroid state. After anti-thyroid and anti-spasm treatment, chest pain subsided. In conclusion, hyperthyroidism induced coronary hypersensitivity may contribute to LMCA vasospasm as seen in this case. IVUS may be useful to identify coronary vasospasm.

doi: http://dx.doi.org/10.12669/pjms.295.3703

How to cite this:Wang DZ, Hu HY, Fu Q, Chen W, Hua X, Chen BX. Left main coronary artery spasm in a hyperthyroid patient with suspected acute coronary syndrome. Pak J Med Sci 2013;29(5):1285-1287.   doi: http://dx.doi.org/10.12669/pjms.295.3703

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