Ricardo A Yañez
Section of Plastic and Reconstructive Surgery, School of Medicine,
Chile
Research Article
Noninvasive Flap Monitoring using Sidestream Dark Field Microscan: A Method for Real-Time Observation of Submilimmetric Vessels
Author(s): Ricardo A Yañez, Jose R Rodriguez, Ignacio J Cifuentes, Bruno L Dagnino, Sebastian A Sepulveda, Arturo A Meissner, Rodrigo A Menchaca and Glenn W HernandezRicardo A Yañez, Jose R Rodriguez, Ignacio J Cifuentes, Bruno L Dagnino, Sebastian A Sepulveda, Arturo A Meissner, Rodrigo A Menchaca and Glenn W Hernandez
A timely diagnosis of vascular compromise improves free flap survival. The aim of this study was to determine the feasibility of monitoring flap vascular patency through noninvasive microcirculation monitoring using SDF. An experimental study was performed in five volunteers. A radial forearm flap was simulated in both upper extremities and cutaneous microcirculation assessment devices were used (SDF and NIRS), and compared with clinical and doppler evaluation. Conditions of venous occlusion (VO) and total vascular occlusion (TVO) were mimicked by using a cuff. The results of the Microscan SDF monitoring during VO and TVO showed a reduced microcirculatory flow at 16.5 (6-30) and 6 (2-11) seconds respectively. Both NIRS and clinical evaluation were slower than SDF at identifying vascular compromise. During VO the Doppler signal does not disappear; while in TVO the signal disappeared at.. View More»
