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Related Experiment Videos

Infusion technology: a cause for alarm.

Hwan-Ing Hee1, Suan-Ling Lim, Shani Sian-Wei Tan

  • 1Department of Paediatric Anaesthesia, KK Women's and Children's Hospital, Singapore, Singapore. heehi@kkh.com.sg

Paediatric Anaesthesia
|January 10, 2003
PubMed
Summary
This summary is machine-generated.

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The occlusion pressure limit alarm on infusion pumps is unreliable for detecting paediatric extravasation. Clinical assessment remains vital for patient safety during infusions.

Area of Science:

  • Paediatric medical devices
  • Infusion therapy safety
  • Extravasation management

Background:

  • Volumetric infusion pumps are standard in paediatric care.
  • Tissue extravasation is a known risk during infusions.
  • The occlusion pressure limit alarm is the sole indicator of infusion flow faults.

Purpose of the Study:

  • To evaluate the reliability of occlusion pressure limit alarms in detecting simulated paediatric extravasations.
  • To determine factors influencing alarm activation during extravasation events.

Main Methods:

  • Simulated extravasations were induced in piglet limbs using normal saline and volumetric infusion pumps.
  • Five different flow rates were tested across multiple limbs.
  • Occlusion pressure limits were adjusted (low, medium, high), and line pressure, volume infused, and limb diameter were measured.

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Main Results:

  • Six of 20 simulated extravasations did not trigger any alarm.
  • Alarm activation occurred in 14 cases at the low setting, 1 at medium, and 0 at high.
  • Forelimb extravasations showed higher alarm incidence, lower infused volume, and lower tissue compliance at alarm.
  • Line pressure correlated positively with flow rates.

Conclusions:

  • Occlusion pressure limit alarms are not dependable for detecting extravasation, particularly in high-compliance tissues or at low flow rates.
  • Line pressure is influenced by tissue compliance and flow rate, not the volume extravasated.
  • Healthcare providers must be aware of alarm settings and rely on frequent clinical assessments.