Case Report

EDTA-Induced Pseudothrombocytopenia

Authors: HAIM MAYAN, MD, OPHIRA SALOMON, MD, RACHEL PAUZNER, MD, ZVI FARFEL, MD

Abstract

A 45-year-old man was admitted to the hospital because of unstable angina pectoris. During the wait for coronary artery bypass surgery, the platelet count gradually decreased from 154 000 to 20 000/mm3, without hemorrhagic manifestations. Medications were discontinued and surgery was postponed. Direct blood smear revealed a normal number of platelets, establishing the diagnosis of pseudothrombocytopenia. The mechanism of the development of pseudothrombocytopenia is not clear.

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References