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Published on: January 7, 2015
Disturbance of Vancomycin Infusion Flow during Multidrug Infusion: Influence on Endothelial Cell Toxicity
Maryline Drouet1, Elodie Cuvelier1,2, Feng Chai3
1CHU Lille, ULR 7365-GRITA-Groupe de Recherche sur les Formes Injectables et les Technologies Associées, University Lille, F-59000 Lille, France.
Background:
Phlebitis is a common side effect of vancomycin peripheral intravenous (PIV) infusion. As only one PIV catheter is frequently used to deliver several drugs to hospitalized patients through the same Y-site, perturbation of the infusion flow by hydration or other IV medication may influence vancomycin exposure to endothelial cells and modulate toxicity.
Methods:
We assessed the toxicity of variations in vancomycin concentration induced by drug mass flow variations in human umbilical vein endothelial cells (HUVECs), simulating a 24 h multi-infusion therapy on the same line. Results were expressed as the percentage of viable cells compared with a 100% control, and the Kruskal-Wallis test was used to assess the toxicity of vancomycin.
Results:
Our results showed that variations in vancomycin concentration did not significantly influence local toxicity compared to a fixed concentration of vancomycin. Nevertheless, the loss of cell viability induced by mechanical trauma mimicking multidrug infusion could increase the risk of phlebitis.
Conclusion:
To ensure that vancomycin-induced phlebitis must have other causes than variation in drug mass flow, further in vitro experiments should be performed to limit mechanical stress to frequent culture medium change.
Insights
Vancomycin infusion via a single peripheral intravenous catheter did not significantly alter endothelial cell toxicity due to concentration variations. However, mechanical stress from multi-drug infusions may increase phlebitis risk.
Area of Science:
- Pharmacology
- Vascular Biology
- Drug Delivery
Background:
- Phlebitis is a frequent complication of vancomycin peripheral intravenous (PIV) infusion.
- Co-administration of multiple IV drugs through the same catheter may alter vancomycin concentration and endothelial cell exposure.
Purpose of the Study:
- To investigate the impact of vancomycin concentration variations on endothelial cell toxicity.
- To simulate multi-drug infusion therapy and assess its effect on vancomycin-induced phlebitis.
Main Methods:
- Assessed vancomycin toxicity in human umbilical vein endothelial cells (HUVECs) under simulated multi-infusion conditions.
- Varied vancomycin concentration to mimic drug mass flow changes.
- Quantified cell viability and analyzed toxicity using the Kruskal-Wallis test.
Main Results:
- Variations in vancomycin concentration did not significantly affect local endothelial cell toxicity compared to a fixed concentration.
- Mechanical trauma from simulated multidrug infusions, not concentration changes, may contribute to phlebitis risk.
Conclusions:
- Vancomycin-induced phlebitis may stem from causes other than drug concentration fluctuations.
- Further in vitro studies are needed to isolate mechanical stress effects from concentration variations in phlebitis development.
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