| Résumé : |
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. responsiveness vs supine reported>.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. |
trié(s) par (Pertinence décroissant(e), Titre croissant(e)) Faire une suggestion Affiner la rechercheMicrocirculatory Assessment of Arterial Below-Knee Stumps: Near-Infrared Spectroscopy Versus Transcutaneous Oxygen Tension—A Preliminary Study in Prosthesis Users in Archives of Physical Medicine and Rehabilitation, 2017/6 (2017)
