Sensitivity of a Next-Generation NIRS Device to Detect Low Mixed Venous Oxyhemoglobin Saturations in the Single Ventricle Population

Anesth Analg. 2020 Sep;131(3):e138-e141. doi: 10.1213/ANE.0000000000004580.

Abstract

Regional cerebral oxygenation index (rSO2) based on near-infrared spectroscopy (NIRS) is frequently used to detect low venous oxyhemoglobin saturation (ScvO2). We compared the performance of 2 generations of NIRS devices. Clinically obtained, time-matched cerebral rSO2 and ScvO2 values were compared in infants monitored with the FORE-SIGHT (n = 73) or FORE-SIGHT ELITE (n = 47) by linear regression and Bland-Altman analyses. In both devices, cerebral rSO2 correlated poorly with measured ScvO2 (FORE-SIGHT partial correlation 0.50 [95% confidence interval {CI}, 0.40-0.58]; FORE-SIGHT ELITE partial correlation 0.47 [0.39-0.55]) and mean bias was +8 (standard deviation [SD] 13.2) for FORE-SIGHT and +14 (SD 12.5) for FORE-SIGHT ELITE. When ScvO2 was <30%, rSO2 was <40 in 8% of FORE-SIGHT ELITE readings. Future NIRS should be validated in more hypoxic cohorts.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Biomarkers / blood
  • Brain / blood supply*
  • Cardiac Surgical Procedures* / adverse effects
  • Equipment Design
  • Heart Defects, Congenital / surgery*
  • Humans
  • Hypoxia, Brain / blood
  • Hypoxia, Brain / diagnosis*
  • Hypoxia, Brain / etiology
  • Infant, Newborn
  • Oximetry / instrumentation*
  • Oxyhemoglobins / metabolism*
  • Predictive Value of Tests
  • Reproducibility of Results
  • Spectroscopy, Near-Infrared / instrumentation*

Substances

  • Biomarkers
  • Oxyhemoglobins