Comparison of frequency-domain and continuous-wave near-infrared spectroscopy devices during the immediate transition

Background Non-invasive monitoring of cerebral tissue oxygen saturation (rcSO 2 ) during transition is of growing interest. Different near-infrared spectroscopy (NIRS) techniques have been developed to measure rcSO 2 . We compared rcSO 2 values during the immediate transition in preterm neonates measured with frequency-domain NIRS (FD-NIRS) with those measured with continuous-wave NIRS (CW-NIRS) devices in prospective observational studies....