Detection of Lower Torso Ischemia by Near-Infrared Spectroscopy During Cardiopulmonary Bypass in a 6.8-Kg Infant With Complex Aortic Anatomy Mathias Redlin, MD, Wolfgang Boettcher, ECCP, Michael Huebler, MD, Felix Berger, MD, Roland Hetzer, MD, Andreas Koster, MD, Wolfgang M. Kuebler, MD The Annals of Thoracic Surgery Volume 82, Issue 1, Pages 323-325 (July 2006) DOI: 10.1016/j.athoracsur.2005.09.008 Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions
Fig 1 Near-infrared spectroscopy measurement during the critical period. O2Hb = change in oxygenated hemoglobin (μmol/l). cHb = change in total hemoglobin (μmol/l). HHb = change in deoxygenated hemoglobin (μmol/l). TOI = Tissue Oxygenation Index (relation of oxygenated hemoglobin to total hemoglobin) (%). THI = Tissue Hemoglobin Index (relative value of total hemoglobin). nTHI = Normalized THI (change in total hemoglobin in relation to base-level hemoglobin). The Annals of Thoracic Surgery 2006 82, 323-325DOI: (10.1016/j.athoracsur.2005.09.008) Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions