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Related Experiment Videos

Vancomycin sequestration during cardiopulmonary bypass surgery.

N Krivoy1, B Yanovsky, A Kophit

  • 1Clinical Pharmacology Unit, Rambam Medical Center and Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel. N_Krivoy@rambam.health.gov.il

The Journal of Infection
|September 10, 2002
PubMed
Summary
This summary is machine-generated.

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Vancomycin levels decrease during cardiopulmonary bypass (CPB) due to sequestration by the CPB circuit. A prophylactic dose of 12mg/kg is recommended for adults undergoing open-heart surgery.

Area of Science:

  • Pharmacology
  • Cardiovascular Surgery
  • Clinical Pharmacy

Background:

  • Vancomycin is a critical antibiotic for surgical prophylaxis.
  • Cardiopulmonary bypass (CPB) can alter drug disposition.
  • Understanding vancomycin pharmacokinetics during CPB is essential for effective dosing.

Purpose of the Study:

  • To analyze vancomycin disposition in adult patients during and after coronary bypass grafting (CABG) with CPB.
  • To determine the impact of CPB on vancomycin pharmacokinetics.
  • To recommend an optimal prophylactic vancomycin dosage for CPB procedures.

Main Methods:

  • Pharmacokinetic analysis using a two-compartment open model in 11 adult patients undergoing CABG.
  • Measurement of vancomycin levels and calculation of pharmacokinetic parameters (half-life, volume of distribution, clearance, AUC).

Related Experiment Videos

  • Quantification of vancomycin sequestration by the CPB machine.

    • Main Results:

    • Significant sequestration of vancomycin by the CPB circuit was observed, leading to an approximate 11% decrease in blood levels shortly after CPB initiation.
    • Mean vancomycin clearance by the CPB machine was 9.51 L/h, with a total sequestration of 331.7 mg.
    • A significant difference was noted between measured and calculated AUC values during CPB.

    Conclusions:

    • Vancomycin sequestration by the CPB oxygenator and tubing system occurs.
    • The study supports a recommended prophylactic vancomycin dose of 12 mg/kg for adults undergoing open-heart surgery with CPB.
    • This dosage ensures adequate vancomycin blood concentrations for effective prophylaxis in this patient population.