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Cefotetan-induced immunologic thrombocytopenia.

D J Christie1, S S Lennon, R L Drew

  • 1Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis 55455.

British Journal of Haematology
|December 1, 1988
PubMed
Summary
This summary is machine-generated.

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This study reports the first definitive case of cefotetan-induced immunologic thrombocytopenia. An elderly patient developed severe bleeding due to cefotetan-dependent anti-platelet antibodies during surgery.

Area of Science:

  • Immunology
  • Hematology
  • Pharmacology

Background:

  • Antibiotic-induced thrombocytopenia is a rare but serious adverse effect.
  • Cephalosporins and penicillins are known to cause immune-mediated platelet destruction.

Observation:

  • An elderly female patient developed profound thrombocytopenia and coagulopathy during surgery for a perforated gastric ulcer while on cefotetan.
  • Laboratory tests revealed severe bleeding diathesis with significantly prolonged prothrombin time and PTT.
  • Cefotetan-dependent IgG anti-platelet antibodies were detected, which also showed weak reactivity with ampicillin.

Findings:

  • The patient's antibodies reacted with platelets only in the presence of exogenous cefotetan, not with drug-coated platelets.
  • This unique reaction pattern suggests a non-hapten mechanism for cefotetan-induced immune thrombocytopenia.

Related Experiment Videos

  • This is the first documented case of cefotetan, a cephalosporin derivative, inducing immunologic thrombocytopenia.

    • Implications:

    • Highlights a novel mechanism of drug-induced immune thrombocytopenia.
    • Clinicians should consider cefotetan as a potential cause of thrombocytopenia in surgical patients.
    • Further research is needed to elucidate the specific immunologic pathways involved in cefotetan-induced platelet destruction.