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Updated: Oct 31, 2025
06:18
A Novel Method to Determine the Longitudinal Antibacterial Activity of Drug-Eluting Materials
Published on: March 3, 2023
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Causes of vancomycin dosing error; problem detection and practical solutions; a retrospective, single-center,
Abdullah M Alzahrani1,2,3, Anjum Naeem1,2,3, Ali F Alwadie1,2,3
1King Abdullah International Medical Research Center, Jeddah, Saudi Arabia.
Summary
Vancomycin dosing errors are common, with pharmacokinetic and pharmacodynamic variability causing 65% of abnormal trough levels. Non-elderly and febrile neutropenic patients had higher risks of low levels, while impaired kidney function increased high levels.
Area of Science:
- Pharmacology
- Clinical Pharmacy
- Antibiotic Stewardship
Background:
- Vancomycin dosing errors and monitoring issues are prevalent in hospitals.
- King Abdulaziz Medical City (KAMC) in Jeddah observes a high rate of abnormal vancomycin trough levels despite standard dosing.
- This necessitates an investigation into the root causes of these dosing errors.
Purpose of the Study:
- To investigate the primary causes of vancomycin dosing errors in a hospital setting.
- To identify factors contributing to abnormal vancomycin trough levels in adult patients.
Main Methods:
- A retrospective, single-center, cross-sectional study conducted at KAMC, Jeddah.
- Inclusion of 472 adult patients (≥15 years) with initial abnormal vancomycin trough levels.
- Evaluation of factors including sampling time, dosing, and patient-specific pharmacokinetic/pharmacodynamic variations.
Main Results:
- Pharmacokinetic and pharmacodynamic variability accounted for 65% of abnormal vancomycin trough levels.
- Non-elderly patients (OR 6) and febrile neutropenic patients (OR 2.21) showed increased odds of low trough levels.
- Patients with CrCl < 50 ml/min had significantly elevated odds of high trough levels (OR 5).
- Abnormal vancomycin levels were not influenced by daily duty hours or working days (p > 0.05).
Conclusions:
- Vancomycin dosing errors are frequent at KAMC, indicating a need for optimized strategies.
- Understanding the causes of abnormal trough levels is crucial for improving therapeutic efficacy and reducing toxicity.
- Further evaluation is required to enhance vancomycin treatment protocols.
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