Obstructive coronary artery disease in patient with acute thrombotic thrombocytopenic purpura

Thrombotic thrombocytopenic purpura (TTP) affects essentially all organ systems. Myocardial injury in TTP is often attributed to microthrombi formation. We present the first case report in the literature of an acute TTP patient with concomitant obstructive coronary artery disease (CAD) and acute myocardial infarction who underwent successful percutaneous coronary intervention (PCI). A 70-year-old female patient who was diagnosed with acute TTP required plasma exchange. The patient also experienced episodes of angina pectoris, elevated cardiac enzymes and global ST segment depressions on ECG. A subsequent non-invasive ischaemia workup revealed significant ischaemia. Coronary angiography revealed obstructive CAD in her right coronary artery, requiring PCI with a bare metal stent placement and dual antiplatelet therapy. The patient tolerated antiplatelet therapy well. At 6 months of follow-up, she had no recurrent angina. This case highlights the potential co-existence of obstructive CAD and acute TTP requiring careful differential diagnosis and treatment.

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