Abstract
A patient with severe pulmonary (arterial) hypertension (PH) presented with a non-ST segment elevation myocardial infarction and recurrent angina at rest. Coronary angiography showed severe ostial left main coronary artery (LMCA) stenosis; coronary arteries were otherwise normal. Intravascular ultrasonography (IVUS) showed deformation of the LMCA due to extrinsic compression from a markedly dilated main pulmonary artery, which was confirmed by cardiac computed tomography. The LMCA was successfully stented using a paclitaxel-eluting stent resulting in complete resolution of angina. Extrinsic compression of the LMCA should be considered in patients with severe PH and angina; IVUS may aid in the diagnosis. Percutaneous stent implantation may be the preferred treatment in this high-risk group of patients.
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