Validation of measurement protocols to assess oxygen consumption and blood flow in the human forearm by near-infrared spectroscopy

Mireille C. P. Van Beekvelt; Willy N.J.M. Colier; Baziel G. M. van Engelen; Maria T. E. Hopman; Ron A. Wevers; Berend Oeseburg

doi:10.1117/12.301044

1 January 1998 Validation of measurement protocols to assess oxygen consumption and blood flow in the human forearm by near-infrared spectroscopy

Mireille C. P. Van Beekvelt, Willy N.J.M. Colier, Baziel G. M. van Engelen, Maria T. E. Hopman, Ron A. Wevers, Berend Oeseburg

Author Affiliations +

Proceedings Volume 3194, Photon Propagation in Tissues III; (1998) https://doi.org/10.1117/12.301044
Event: BiOS Europe '97, 1997, San Remo, Italy

Abstract

Near infrared spectroscopy (NIRS) has been used to monitor oxygenation changes in muscle. Quantitative values for O₂ consumption, blood flow and venous saturation have been reported by several investigators. The amount of these measurements is, however, still limited and complete validation has not yet been established. The aim of this study was to investigate the different NIRS methods to calculate O₂ consumption (VO₂) and forearm blood flow (FBF) and to validate the data with the accepted method of strain-gauge plethysmography and blood sampling. Thirteen subjects were tested in rest and during static isometric handgrip exercise at 10% MVC. The NIRS optodes were positioned on the flexor region of the arm. A significant correlation was found between plethysmograph data and NIRS [tHb] during venous occlusion in rest (r EQ 0.925 - 0.994, P < 0.05) as well as during exercise (r equals 0.895 - 0.990, P < 0.05). No correlation was found, however, for the calculated FBF and VO₂ values between NIRS and the combination of plethysmography and blood sampling. In rest nor during exercise. It seems that although NIRS is a good qualitative monitoring technique, quantification is difficult due to the great variability that is found between the subjects.

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Mireille C. P. Van Beekvelt, Willy N.J.M. Colier, Baziel G. M. van Engelen, Maria T. E. Hopman, Ron A. Wevers, and Berend Oeseburg "Validation of measurement protocols to assess oxygen consumption and blood flow in the human forearm by near-infrared spectroscopy", Proc. SPIE 3194, Photon Propagation in Tissues III, (1 January 1998); https://doi.org/10.1117/12.301044

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