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Updated: Jul 6, 2026

Diffuse Reflectance Spectroscopy: Getting the Capillary Refill Test Under One's Thumb
Published on: December 2, 2017
Translating best practices in assessing capillary refill.
Marlene Dufault1, Barbara Davis, Dorothy Garman
1College of Nursing, University of Rhode Island, Kingston, Rhode Island 02881, USA. Marlened@uri.edu
Capillary refill assessment alone has limited clinical value. Further research is needed to explore alternative methods for evaluating peripheral perfusion, moving beyond isolated capillary refill tests.
Area of Science:
- Clinical Nursing Practice
- Patient Assessment
- Evidence-Based Medicine
Background:
- A systematic review evaluated empirical and clinical evidence for capillary refill assessment.
- Current practices in an acute care hospital were examined.
Purpose of the Study:
- Determine the strength, usefulness, and feasibility of capillary refill assessment.
- Inform the development of a best-practice guideline for peripheral perfusion evaluation.
Main Methods:
- A research roundtable was convened in a US urban community hospital.
- Empirical and clinical evidence from a systematic review was assessed.
- Current hospital practices and policies were reviewed.
Main Results:
- Isolated capillary refill assessment demonstrates limited clinical value.
- No current nursing interventions exclusively rely on capillary refill measurement.
Conclusions:
- Capillary refill assessment alone is insufficient for clinical decision-making.
- Future research should focus on comparative analyses of alternative peripheral perfusion assessment methods.
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