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Sensory testing versus nerve conduction velocity in diabetic polyneuropathy.
J M Redmond1, M J McKenna, M Feingold
1Department of Neurology, Henry Ford Hospital, Detroit, Michigan.
Muscle & Nerve
|December 1, 1992
Summary
Quantitative sensory testing (QST) and nerve conduction velocity (NCV) effectively measure diabetic distal symmetric polyneuropathy (DSP). The sural sensory nerve study best predicts DSP severity.
Area of Science:
- Neurology
- Diabetology
Background:
- Distal symmetric polyneuropathy (DSP) is a common complication of diabetes.
- Accurate assessment of DSP is crucial for patient management.
Purpose of the Study:
- To evaluate quantitative sensory testing (QST) and nerve conduction velocity (NCV) as diagnostic tools for DSP.
- To compare the efficacy of QST and NCV in reflecting DSP clinical severity.
Main Methods:
- Thirty-six diabetic patients were categorized into four groups based on DSP severity.
- QST included thermal and vibration threshold testing.
- NCV studies assessed median, peroneal, and sural nerves.
Main Results:
- Both QST and NCV results correlated significantly with clinical DSP severity.
- NCV studies identified more abnormalities than QST (vibration or thermal tests).
- The sural sensory nerve conduction study was the most sensitive single predictor of DSP.
Conclusions:
- QST and NCV findings align with clinical DSP categorization.
- QST and NCV serve as complementary diagnostic methods for DSP.
- Sural sensory nerve conduction studies are highly valuable for predicting DSP.