Measurement of regional forearm muscle haemodynamics via the near-infrared spectroscopy venous occlusion technique: the impact of hand circulatory occlusion

作者：Cross T J^*; van Beekvelt M; Constantini K; Sabapathy S

来源：Physiological Measurement, 2014, 35(12): 2563-2573.

DOI：10.1088/0967-3334/35/12/2563

• near-infrared spectroscopy
• forearm blood flow
• venous occlusion

The purpose of this study was to examine whether circulatory occlusion of the hand impacts on regional forearm muscle haemodynamics as determined by the near-infrared spectroscopy (NIRS) venous occlusion technique (NIRS-VOT). Twenty-five young, healthy participants (18 males and 7 females; 28 +/- 4 years; 71 +/- 7 kg) completed two experimental protocols that were performed on the dominant arm: (1) a series of five venous occlusion trials with a suprasystolic cuff (%26gt;260 mmHg) applied to the wrist and (2) five venous occlusion trials without hand-occlusion. Both protocols were performed twice in a counterbalanced manner. NIRS data were obtained from the flexor digitorum superficialis (FDS) muscle using a dual wavelength, continuous-wave spectrophotometer. FDS muscle blood flow (Q. FDS), vascular conductance (CFDS), O-2 consumption (Vo(2FDS)), and venous O-2 saturation (SvO(2)) were calculated from NIRS data during the initial 5 s of venous occlusion. Circulatory occlusion of the hand via wrist cuffing significantly (P %26lt; 0.05) reduced Q (FDS) (-36 +/- 23%), C-FDS (-37 +/- 23%), Vo(2FDS) (-14 +/- 31%) and SvO(2) (-14 +/- 12%). These findings indicate that hand-occlusion, via wrist cuffing, adversely impacts on regional forearm haemodynamics as determined by the NIRS-VOT. Consequently, it is recommended that future investigators avoid hand-occlusion when using the NIRS-VOT to quantify spontaneous haemodynamics of regional forearm muscle.

• 出版日期2014-12