1. Power Spectral Analyses of Index Finger Skin Blood Perfusion in Carpal Tunnel Syndrome and Diabetic Polyneuropathy
- Author
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I-Ming Jou, Pei Yin Chen, Chou Ching K. Lin, Wen-Chi Wang, Chien Kuo Wang, and Han-Wei Huang
- Subjects
Adult ,Male ,lcsh:Internal medicine ,medicine.medical_specialty ,lcsh:Specialties of internal medicine ,Article Subject ,Endocrinology, Diabetes and Metabolism ,lcsh:Medicine ,lcsh:Diseases of the endocrine glands. Clinical endocrinology ,Fingers ,Diabetic Neuropathies ,lcsh:RC581-951 ,Diabetic polyneuropathy ,Laser-Doppler Flowmetry ,medicine ,Humans ,lcsh:RC31-1245 ,Carpal tunnel syndrome ,Glycated Hemoglobin ,lcsh:RC648-665 ,business.industry ,lcsh:R ,General Medicine ,Middle Aged ,Laser Doppler velocimetry ,Absolute power ,medicine.disease ,Carpal Tunnel Syndrome ,Surgery ,nervous system diseases ,Perfusion ,Neutral position ,Female ,Analysis of variance ,Nuclear medicine ,business ,Index finger skin ,Research Article - Abstract
The main purpose of this study was to investigate the applicability of frequency domain analysis on laser Doppler flowmetry (LDF) data recorded from the index fingers of patients with carpal tunnel syndrome (CTS) and diabetic polyneuropathy (DPN). Patients with numbness of the palm were recruited and grouped according to the results of electrophysiological examinations into 2×2 groups by the existence or nonexistence of CTS and/or DPN. Skin blood perfusion was recorded by LDF in both the neutral position and the maximally flexed position (the Phalen test). -transformation was utilized to decompose the recorded data into frequency bands, and the relative band power and power dispersion were calculated. Analysis of variance was used to test the effects of DPN, CTS, and the Phalen test results. The results showed that (1) DPN decreased the absolute power and the relative power in some frequency bands in both positions and CTS increased the power dispersion of some frequency bands only during the Phalen test and (2) there was no difference in the LDF results between patients with positive or negative Phalen test results.
- Published
- 2011
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