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Related Experiment Videos

Comparative flow rates for small bore peripheral intravenous catheters.

K R Rosen, D A Rosen

    Pediatric Emergency Care
    |September 1, 1986
    PubMed
    Summary

    Fluid delivery in pediatric patients is affected by equipment. Peripheral intravenous catheter brand and tubing significantly impact flow rates, with extensions further reducing delivery efficiency.

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    Area of Science:

    • Pediatric critical care
    • Medical device engineering
    • Fluid dynamics

    Background:

    • Effective fluid resuscitation is critical for pediatric patients.
    • Numerous factors influence fluid delivery, including patient-specific variables and equipment limitations.
    • Peripheral intravenous (PIV) catheters and associated tubing are key components in fluid delivery systems.

    Purpose of the Study:

    • To evaluate the impact of different peripheral intravenous catheter brands and tubing configurations on fluid flow rates in pediatric patients.
    • To identify mechanical variables that significantly affect fluid delivery efficiency.
    • To quantify the differences in flow rates attributable to catheter brand, gauge, and the use of extensions.

    Main Methods:

    • Determined flow rates for 10 brands of 20-, 22-, and 24-gauge PIV catheters.

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  • Categorized catheter brands into 'slow' and 'faster' flow groups.
  • Analyzed the effect of tubing apparatus and extensions on flow rates.

    • Main Results:

    • Statistically significant differences in flow rates were observed between catheter brands.
    • The disparities in flow rates between the slowest and fastest catheters within the same gauge were relatively small (6.6-7.7 ml/min).
    • Tubing apparatus and the addition of extensions significantly decreased fluid flow rates, with the magnitude dependent on tubing and extension type.

    Conclusions:

    • Catheter brand and tubing configuration are significant determinants of fluid delivery rates in pediatric patients.
    • While catheter brand differences exist, tubing and extensions play a crucial role in modulating flow.
    • Optimizing PIV system components is essential for ensuring adequate fluid resuscitation in pediatric care.