Blasting Into Acute Coronary Syndrome.

Acute coronary syndrome (ACS) is a condition that develops from reduced blood flow and oxygen delivery through the coronary arteries which leads to cardiac ischemia. In the case presented here, the patient's ACS was precipitated by his underlying condition of chronic myelogenous leukemia (CML). Several complications can arise in patients with CML, one of them being blast crisis. Blast crisis is defined by 20% or greater blasts in the peripheral blood, or extramedullary proliferation of blasts. There is a known phenomenon of blood hyperviscosity that can develop in such patients which can lead to complications of stroke-like symptoms, congestive heart failure, and acute respiratory failure. In such cases, leukostasis rarely leads to myocardial ischemia. We present a challenging case of a patient with an acute coronary syndrome (ACS) precipitated by a blast crisis. This case highlights a potentially life-threatening cardiac complication of CML in patients with coronary artery disease and aimed to provide an optimal treatment strategy to improve outcomes.