An 83-year-old male patient presented with complaints of generalized body aches, fever, rhinorrhea, and worsening dyspnea for the past 5 days. Four weeks ago, he was started on clopidogrel after he underwent stent placement to his left leg. Current admission laboratory findings revealed a white blood cell (WBC) count of 1180, with no neutrophils corresponding to an absolute neutrophil count of zero. After an extensive negative infectious workup, clopidogrel was determined to be the offending agent. This medication was discontinued and the patient was placed on a leukocyte growth factor with significant improvement in his WBC and neutrophil counts. On discharge, clopidogrel was replaced with ticagrelor. During post-discharge follow-up visits scheduled at 2 weeks and at 6 months, the patient continues to remain stable with blood counts back to baseline.
Persaud H, Chung WB. A severe case of neutropenia secondary to clopidogrel. J Pract Cardiovasc Sci 2018;4:144-6