PMID: 15373639Sep 18, 2004Paper

Frequency of thrombocytopenia associated with gentamicin therapy

Immunohematology
M F Leach, J P Aubuchon

Abstract

Many drugs, including antibiotics such as gentamicin, have been associated with the development of a drug-induced thrombocytopenia. Serologic methods for detection of drug-dependent platelet antibodies (DDPAs) are not routinely performed, and the incidence of such antibody-mediated thrombocytopenia is not known. As we routinely perform solid-phase red cell adherence assays for the detection of DDPAs, a study was designed to determine the incidence of gentamicin- associated platelet antibodies (GAPAs) in our institution. Adult patients who received gentamicin from 1/1/98 to 7/31/98 were evaluated for inclusion in the study. Testing for the presence of GAPAs was performed if the patient had a decrease in platelet count while receiving gentamicin or if the platelet count increased or decreased within 3 days of the last gentamicin therapy. Patients receiving gentamicin without development of thrombocytopenia were tested as controls. During the study period, 926 patients received gentamicin, with 324 (35%) being evaluated for the presence of GAPAs; GAPAs were identified in 25 of 659 patients (4%) eligible for the study. All control samples were found to lack GAPAs. If only patients exhibiting changes in platelet counts are considere...Continue Reading

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