Blood Flow Analysis in Carpal Tunnel Syndrome and Diabetic Neuropathy
Author Information
Author(s): Huang Han-Wei, Jou I-Ming, Wang Chien-Kuo, Chen Pei-Yin, Wang Wen-Chi, Lin Chou-Ching K.
Primary Institution: National Cheng Kung University Hospital
Hypothesis
The study investigates the applicability of frequency domain analysis on laser Doppler flowmetry data recorded from patients with carpal tunnel syndrome and diabetic polyneuropathy.
Conclusion
The study found that diabetic polyneuropathy decreases blood perfusion, while carpal tunnel syndrome increases power dispersion during wrist flexion.
Supporting Evidence
- DPN decreased the absolute power and relative power in some frequency bands.
- CTS increased the power dispersion of some frequency bands during the Phalen test.
- There was no difference in LDF results between patients with positive or negative Phalen test results.
Takeaway
This study looked at how blood flow changes in the fingers of people with two conditions: carpal tunnel syndrome and diabetic nerve damage. It found that diabetes reduces blood flow, but carpal tunnel syndrome makes the blood flow patterns more variable when the wrist is bent.
Methodology
Patients were grouped based on electrophysiological examinations, and skin blood perfusion was recorded using laser Doppler flowmetry in different wrist positions.
Potential Biases
The study may have biases related to the selection of subjects and the subjective nature of the Phalen test.
Limitations
The apparatus could not ensure a consistent wrist angle, and the study had a small sample size with potential confounding factors like age and sex.
Participant Demographics
The study included more females, with ages ranging from approximately 52 to 60 years, and a mix of diabetic and non-diabetic patients.
Statistical Information
P-Value
P = 0.01
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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