Abstract
AbstractThe complex regional pain syndrome type I (CRPS) may occur following trauma or surgery to an extremity. The purpose of this study was to assess the efficacy of a new technique laser Doppler image (LDI) in the diagnosis of CRPS of the upper extremity. A total of 45 subjects, between 26 and 56 years of age were included in this study, 25 subjects (Group I) had a clinical diagnosis of CRPS I of one hand, and the remaining 20 were healthy subjects (Group II) served as a control. Each patient received an LDI to measure the cutaneous blood flow (flux value). LDI was done with and without Mueller's maneuver to assess sympathetic function. In normal subjects, the differences in the perfusion values (flux unit) between two hands averaged 2.2 ± 0.5% (1.22 to 3.18%) without and 2.2 ± 0.6% (1.02 to 3.38%) with the Mueller's maneuver. For CRPS I patients, an abnormal perfusing value for the affected hands occurred in all 25 patients without Mueller's maneuver. The differences between contralateral and affected...
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