Diagnostics
Near-Infrared Spectroscopy-Guided Selective Distal Perfusion in Femoral Venoarterial Extracorporeal Membrane Oxygenation: A Feasibility Study
By Yoon WS, Kim Y, Kwun JS and 3 others.
Abstract
Background/Objectives: We evaluated the feasibility of a near-infrared spectroscopy (NIRS)-guided selective strategy based on a single absolute regional tissue oxygen saturation (rSO2) threshold and described clinically overt limb ischemia.
Methods
This single-center retrospective study included 110 adults receiving femoral venoarterial extracorporeal membrane oxygenation between April 2020 and December 2024. All underwent bilateral lower-extremity NIRS monitoring. In 83 patients, distal perfusion catheter (DPC) placement was triggered by rSO2 < 40% in the cannulated limb or clinically evident limb ischemia; 27 received routine prophylactic DPC placement at cannulation. Primary endpoints were DPC avoidance and clinically overt limb ischemia.