Anticoagulation with unfractionated heparin is vital to reduce the risk of thromboembolic events during cardiopulmonary bypass and left ventricular assist device placement. However patients with heparin-induced thrombocytopenia are at risk of developing immune-mediated thrombotic events. We describe 2 patients with heparin-induced thrombocytopenia confirmed via serotonin release assay who were successfully treated with plasmapheresis exchange before left ventricular assist device placement.
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