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A cross-sectional study comparing two quantitative sensory testing devices in individuals with diabetes
R E Maser1, C Laudadio, M J Lenhard
1University of Delaware, Newark 19716, USA. 26338@brahms.udel.edu
Diabetes Care
|February 1, 1997
Summary
The Tacticon device effectively detects diabetic neuropathy by assessing circumference discrimination, correlating with vibratory thresholds in patients. This new tool shows promise for primary care settings.
Area of Science:
- Neurology
- Diabetology
- Medical Devices
Background:
- Diabetic neuropathy affects large sensory nerve fibers.
- Quantitative sensory testing (QST) is used to assess nerve function.
- Newer devices aim to improve neuropathy detection in clinical settings.
Purpose of the Study:
- To compare circumference discrimination thresholds measured by the Tacticon with vibratory thresholds in individuals with diabetes.
- To evaluate the Tacticon's utility in detecting diabetic neuropathy.
Main Methods:
- 150 individuals with diabetes were assessed.
- Vibratory thresholds and Tacticon-measured circumference discrimination thresholds were determined.
- A two-alternative forced-choice procedure was employed.
Main Results:
- Vibratory thresholds increased as circumference discrimination ability decreased (P < 0.001).
- Agreement between Tacticon and vibratory testing showed moderate correlation (kappa = 0.67 for <=50 years, 0.55 for >50 years).
- Age, diabetes duration, and height were independently associated with circumference discrimination in older adults (>50 years).
Conclusions:
- The Tacticon provides a straightforward method for assessing complex sensory functions like area discrimination.
- Results suggest the Tacticon can identify neuropathy in primary care.
- The device offers advantages in cost, portability, and ease of use compared to existing QST equipment.