Journal
ANNALS OF THORACIC SURGERY
Volume 98, Issue 5, Pages 1853-1854Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.athoracsur.2014.04.057
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Patients on peripheral extracorporeal membrane oxygenation (ECMO) are at risk for lower extremity ischemia. Effective monitoring is needed to identify complications quickly and allow timely correction. Near-infrared spectroscopy has been used extensively in cerebral monitoring during cardiac surgery. We present its use in monitoring lower extremity perfusion in patients on ECMO. Five patients on ECMO had near-infrared spectroscopy monitors placed on the calf of both lower extremities. Continuous real-time tissue oxygen saturation data (stO(2)) was displayed and recorded. Two patients had lower extremity complications in the leg with the arterial cannula. The patients with complications had lower stO(2) in the cannulated leg at the time of ECMO insertion, larger differences in stO(2) between the legs at the time of insertion, lower nadir stO(2)s, and larger peak differences in stO(2) between the legs than patients without limb complications. The use of near-infrared spectroscopy for continuous monitoring of tissue oxygenation in the lower extremities in patients on ECMO may allow early identification of patients with lower extremity complications. (C) 2014 by The Society of Thoracic Surgeons
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