BLOOD FLUX AND VENOARTERIOLAR RESPONSE OF THE SKIN IN LEGS WITH CHRONIC VENOUS INSUFFICIENCY MEASURED AT 2 DIFFERENT DEPTHS BY USING A DOUBLE-WAVELENGTH LASER-DOPPLER TECHNIQUE
K. Malanin et al., BLOOD FLUX AND VENOARTERIOLAR RESPONSE OF THE SKIN IN LEGS WITH CHRONIC VENOUS INSUFFICIENCY MEASURED AT 2 DIFFERENT DEPTHS BY USING A DOUBLE-WAVELENGTH LASER-DOPPLER TECHNIQUE, Angiology, 49(6), 1998, pp. 441-446
The laser Doppler flux (LDF) and the venoarteriolar response (VAR) of
the skin in legs with chronic venous insufficiency (CVI) was measured
by using a new double-wavelength probe technique (543 nm and 780 nm).
The recordings were taken in a recumbent and in a sitting position. Te
n patients with CVI and 20 control subjects with healthy legs were inv
estigated. The LDF was found to bl significantly enhanced in a recumbe
nt position at 543 nm and in a sitting position at 780 nm in legs with
CVI compared with healthy legs (P<0.05 and P=0.02, respectively). The
authors could not find the VAR to be impaired in either wavelength in
legs with CVI compared with healthy legs. The double-wavelength probe
technique makes it possible to record simultaneously the LDF in the s
uperficial and deep layers of the skin on the same place in the leg.