title: Probable linezolid-induced thrombocytopenia in a patient with vancomycin-resistant enterococci.
abstract: OBJECTIVE
  A probable case of linezolid-induced thrombocytopenia is reported.
  
  
  CONCLUSIONS
  A 74-year-old Caucasian male with renal dysfunction was diagnosed with diverticulosis. Patient was prescribed linezolid 600 mg orally twice daily for vancomycin-resistant enterococci abdominal infection that developed secondary to colon resection. Upon initiation of linezolid, platelet count dropped from 248 000 cells/mm(3) on day 1 to 97 000 cells/mm(3) on day 5 of treatment. Linezolid was discontinued and platelet counts improved to pretreatment levels. Application of the Naranjo probability scale indicated a probable association of linezolid therapy and thrombocytopenia. Clinicians should be aware that linezolid has this hematologic side effect and that patients with renal dysfunction are at increased risk. Monitoring platelet count more than once weekly should be advisable in these patients.
  
  
  CONCLUSIONS
  A 74-year-old Caucasian male with renal dysfunction developed a probable case of linezolid-induced thrombocytopenia after receiving the drug for 5 days for treatment of vancomycin-resistant enterococci abdominal infection.
authors.affiliation: Gregory School of Pharmacy, Palm Beach Atlantic University, West Palm Beach, FL 33416, USA. mara_poulakos@pba.edu
authors.forename: Mara N
authors.initials: MN
authors.lastname: Poulakos
authors.forename: Yasmin
authors.initials: Y
authors.lastname: Grace
authors.forename: Christina
authors.initials: C
authors.lastname: Coakley
mesh_terms: D000081:Acetamides / Q000009:adverse effects*; D000368:Aged; D000890:Anti-Infective Agents / Q000009:adverse effects*; D001792:Blood Platelets / Q000187:drug effects; D016983:Enterococcus / Q000187:drug effects*; D006801:Humans; D000069349:Linezolid; D008297:Male; D023303:Oxazolidinones / Q000009:adverse effects*; D010976:Platelet Count; D012307:Risk Factors; D013921:Thrombocytopenia / Q000139:chemically induced*; D014640:Vancomycin / Q000627:therapeutic use; D020713:Vancomycin Resistance; D044465:White People
chemical_list: D000081:Acetamides; D000890:Anti-Infective Agents; D023303:Oxazolidinones; D014640:Vancomycin; D000069349:Linezolid