Does Cannula Material Influence Phlebitis Risk in Intensive Care?

Study Overview

Short peripheral cannulas are commonly used in intensive care, but mechanical irritation from the catheter may contribute to phlebitis. Although polyurethane is generally considered a flexible catheter material, different polyurethane products may vary in their composition and stiffness.

This post-hoc analysis of the multicentre AMOR-VENUS study examined whether phlebitis rates differed according to the material and product used. The analysis included 1,355 adult ICU patients and 3,429 short peripheral cannulas across 23 ICUs in Japan.

Key Findings

• Phlebitis rates varied between cannula products, including between different types of polyurethane cannulas.
• The highest incidence was observed with the SuperCath® polyurethane cannula, at 13.1%.
• Compared with other polyurethane cannulas, SuperCath® and ethylene tetrafluoroethylene cannulas were associated with a higher risk of phlebitis after adjustment for other factors.
• PEU-Vialon® cannulas did not show a statistically significant difference compared with the reference polyurethane group.
• These results suggest that broad material categories alone may not fully explain catheter performance. Differences between individual products, including their physical properties, may also be important.