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Related Experiment Videos

Method for evaluating drip-rate accuracy of intravenous flow-regulating devices.

B C Carleton1, R J Cipolle, S D Larson

  • 1Department of Pharmacy Practice, College of Pharmacy, University of Minnesota (UM), Minneapolis 55455.

American Journal of Hospital Pharmacy
|November 1, 1991
PubMed
Summary

Patient movement significantly impacts intravenous infusion accuracy. Devices like the roller clamp, Dial-A-Flo, and Exacdrop showed reduced accuracy with position changes, unlike the IVAC 280 and 3M IV Flow Regulator.

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Area of Science:

  • Medical Devices
  • Fluid Dynamics
  • Patient Care

Background:

  • Intravenous (IV) therapy is critical for medication delivery.
  • Accuracy of IV flow-regulating devices is essential for patient safety.
  • Patient positioning and movement can potentially affect IV drip rates.

Purpose of the Study:

  • To investigate the impact of patient movement and position changes on the drip-rate accuracy of various IV flow-regulating devices.
  • To compare the accuracy of different IV devices under dynamic conditions.

Main Methods:

  • Twenty healthy adult volunteers participated in the study.
  • IV infusion sites were established, and 5% dextrose was administered using standard IV tubing and bags.
  • Drip rates were measured at 40 drops/min for five devices (IVAC 280, roller clamp, Dial-A-Flo, Exacdrop, 3M IV Flow Regulator) across supine, sitting, and standing positions, and during walking.

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Main Results:

  • The IVAC 280 and 3M IV Flow Regulator maintained consistent drip rates across position changes.
  • The roller clamp, Dial-A-Flo, and Exacdrop showed significant decreases in drip rate accuracy when changing from supine to sitting and sitting to standing.
  • While walking had minimal impact, returning to a supine position significantly increased drip rates for the roller clamp, Dial-A-Flo, and Exacdrop.

Conclusions:

  • The drip-rate accuracy of the roller clamp, Dial-A-Flo, and Exacdrop devices is significantly affected by patient position changes.
  • The IVAC 280 and 3M IV Flow Regulator demonstrate superior stability in drip rate accuracy during patient movement.
  • Clinical settings should consider the limitations of certain IV flow regulators when patient mobility is a factor.