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Updated: Aug 5, 2026

A Protocol to Set Up Needle-Free Connector with Positive Displacement on Central Venous Catheter in Intensive Care Unit
Published on: July 13, 2019
Intravenous catheters: biocompatibility aspects and phlebitis correlation
1Departamento de Farmácia, Faculdade de Ciências Farmacêuticas-Universidade de São Paulo, Brazil.
Insights
Current analytical methods may not adequately assess catheter biological safety. This study found no significant link between catheter material or type and the incidence of thrombophlebitis during clinical use.
Area of Science:
- Biomaterials Science
- Medical Device Evaluation
- Clinical Microbiology
Background:
- Catheters are extensively utilized medical devices with long histories of use.
- Existing analytical methodologies for evaluating catheter biological safety face scrutiny regarding their adequacy.
- Thrombophlebitis remains a potential complication associated with catheter use.
Purpose of the Study:
- To investigate the biological evaluation of catheters using current analytical methodologies.
- To assess the incidence of thrombophlebitis during the clinical use of catheters.
- To determine if catheter raw material or type correlates with thrombophlebitis induction.
Main Methods:
- Catheters were subjected to standard analytical testing protocols.
- Clinical use of catheters was monitored to observe thrombophlebitis development.
- Statistical analysis was performed to correlate phlebitis incidence with material and catheter type.
Main Results:
- A phlebitis incidence rate of 3.9% was observed during clinical monitoring.
- No statistically significant association was found between the nature of the raw material and phlebitis incidence (p = 0.255).
- No statistically significant association was found between the type of catheter and phlebitis incidence (p = 0.468).
Conclusions:
- Current analytical methods may be insufficient for comprehensive biological evaluation of catheters.
- The study did not establish a relationship between common catheter characteristics and thrombophlebitis.
- Further research is needed to refine methods for assessing catheter-associated complications.
Abstract:
Although catheters have been widely used for a long time, there are doubts if the analytical methodology in current use is enough to evaluate them biologically. Catheters were submitted to the usual methodology, in addition to the accompaniment in their clinical use, observing the thrombophlebitis induction. It was not possible to associate the phlebitis incidence (3.9%) in relationship with the raw material nature (p = 0.255), neither with the kind of the catheter type (p = 0.468).
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