Article

OBJECTIVE: To examine metrologic properties of near-infrared spectroscopy (NIRS)
versus transcutaneous oxygen tension (TcPO2) for microcirculatory assessment of
vascular transtibial stumps at the stabilized period of prosthesis fitting, as a
preliminary step before exploring its ability to predict stump healing,
considering the previously identified limits of TcPO2 (borderline area between 15
and 35mmHg). DESIGN: Prospective single-center observational study. SETTING:
University-based rehabilitation center. PARTICIPANTS: Individuals with unilateral
transtibial amputation for peripheral artery disease, at the definitive stage of
prosthesis fitting, able to perform a 2-minute walk test (N=30). INTERVENTIONS:
Not applicable. MAIN OUTCOME MEASURES: Test-retest, with the stump being
evaluated in supine and inclined positions, first by NIRS (tissue saturation
index [TSI], oxyhemoglobin, deoxyhemoglobin, and total hemoglobin) and second by
TcPO2. Subjects carried out a 2-minute walk test and visual analog scales (wound
healing and pain). RESULTS: Feasibility and tolerance of NIRS were satisfactory.
The reliability of NIRS and TcPO2 values was good (intraclass correlation
coefficient >0.7; P<.05). No significant relation was found between NIRS and
TcPO2. No responsiveness (inclined vs supine) was reported (P>.05). A significant
relation between TSI and the 2-minute walk test (r>.49, P<.05) was found.
CONCLUSIONS: NIRS is painless, complication-free, and feasible, with good
reliability. NIRS evaluates others domain than TcPO2 that are more linked to
metabolic adaptation. Its capacity to predict stump healing and tolerance to
early prosthesis fitting is therefore interesting to estimate in future studies.
CI - Copyright (c) 2017 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS