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Linezolid vs Vancomycin in Induced Thrombocytopenia

Dimah Al-Harbi1, Abdulrahman Alturaiki1,2,3, Ayshah Alshngeetee4

  • 1King Abdulaziz Medical City, Pharmaceutical Care Services, Ministry of National Guard Health Affairs, Riyadh, Saudi Arabia.

Infectious Diseases and Therapy
|June 21, 2022
PubMed
Abstract

Insights

Linezolid is associated with a four times higher incidence of thrombocytopenia compared to vancomycin in patients with multidrug-resistant gram-positive infections. Clinicians should consider this risk when choosing between these antibiotics.

Area of Science:

  • Infectious Diseases
  • Pharmacology
  • Hematology

Background:

  • Linezolid and vancomycin are key treatments for multidrug-resistant gram-positive infections.
  • Thrombocytopenia is a known adverse effect of both drugs, potentially leading to treatment discontinuation.
  • This study aimed to compare the incidence of thrombocytopenia between linezolid and vancomycin and identify associated risk factors.

Purpose of the Study:

  • To compare the incidence of thrombocytopenia in patients treated with linezolid versus vancomycin.
  • To identify risk factors contributing to thrombocytopenia in patients receiving these antibiotics.

Main Methods:

  • Retrospective observational cohort study.
  • Inclusion of patients receiving intravenous or oral linezolid, or intravenous vancomycin for at least 5 days.
  • Collection and analysis of platelet count data during treatment to determine thrombocytopenia incidence.

Main Results:

  • A total of 453 patients were analyzed (241 linezolid, 212 vancomycin).
  • Linezolid use was associated with a significantly higher incidence of thrombocytopenia (OR 4.39; 95% CI 2.38-8.08) compared to vancomycin.
  • Advanced age, lower baseline platelet count, and vasopressor use were identified as risk factors for thrombocytopenia.

Conclusions:

  • Linezolid carries a substantially higher risk of thrombocytopenia compared to vancomycin.
  • Clinicians must consider the elevated risk of thrombocytopenia with linezolid when selecting antibiotic therapy.
  • Risk stratification based on age, baseline platelet count, and vasopressor use may aid in patient management.
Keywords:
Antimicrobial agentsLinezolidPlateletsRisk factorsThrombocytopeniaVancomycin

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