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Updated: Jul 13, 2026
04:19
A New Best Practice for Validating Tail Vein Injections in Rat with Near-infrared-Labeled Agents
Published on: April 19, 2019
Development and validation of a Vein Assessment Tool (VAT)
Joan Webster1, Helen-Louise Morris, Katharine Robinson
1Research Centre for Clinical Research, Royal Brisbane and Women's Hospital, Queensland, Australia. joan_webster@health.qld.gov.au
Summary
The Vein Assessment Tool (VAT) shows high reliability for classifying vein insertion difficulty among experienced nurses. This validated tool can objectively describe vein condition for clinical use and research.
Area of Science:
- Vascular Access
- Medical Device Validation
- Nursing Practice
Background:
- Accurate vein assessment is crucial for successful intravenous cannulation.
- Standardized tools can improve consistency in evaluating vein characteristics.
- The Vein Assessment Tool (VAT) was developed to aid in classifying veins for insertion difficulty.
Purpose of the Study:
- To evaluate the face validity and inter-rater reliability of the Vein Assessment Tool (VAT).
- To determine the tool's effectiveness in classifying veins based on intravenous insertion difficulty.
Main Methods:
- A prospective observational study involving 15 nurses and radiographers.
- Independent vein assessments of the upper limb were conducted using the VAT.
- Inter-rater agreement was quantified using intraclass correlation coefficients (ICC).
Main Results:
- A total of 125 independent assessments were performed.
- Mean percentage agreement between raters ranged from 84% to 92%.
- Very high inter-rater reliability was observed (ICC 0.83 for Medical Imaging, 0.93 for Oncology).
Conclusions:
- The Vein Assessment Tool (VAT) demonstrates strong face validity and inter-rater reliability among experienced nurses.
- The VAT is a potentially valuable tool for objective vein description in clinical settings and research.
- Further validation in broader populations is recommended.
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