摘要

AimTo compare absolute values of regional cerebral tissue oxygenation (cStO(2)) during haemodynamic transition after birth and repeatability during steady state for two commercial near-infrared spectroscopy (NIRS) devices. MethodsIn a prospective observational study, the INVOS 5100C and FORE-SIGHT were compared on 12 term newborns delivered by elective caesarean section. During the 10min following umbilical cord clamping, cStO(2) was measured simultaneously with the neonatal sensors from each device. Repeated measurements were taken the following day. ResultsThree and 8min after clamping, the mean cStO(2) value increased from 53.4% (CI 36.8-69.9%) to 86.0% (CI 80.2-91.7%) for INVOS and from 61.6% (CI 55.4-67.8%) to 82.2% (CI 77.7-86.7%) for FORE-SIGHT. The Bland-Altman plot revealed decreasing difference (INVOS minus FORE-SIGHT) (D) in absolute values (A) with increasing cStO2 (D=0.5A - 38.19 p=<0.001). The mean steady-state value on day two was 78.4% (CI 74.6-82.2%) and 86.2% (CI 85.0-87.4%) for INVOS and FORE-SIGHT, respectively. The within-subject standard deviation during steady-state repeated measurements was 4.8%0.86 for INVOS and 2.8%+/- 0.5 for FORE-SIGHT. ConclusionThe INVOS and FORE-SIGHT cStO(2) estimates showed oxygenation-level-dependent difference during birth transition. The better repeatability of FORE-SIGHT could be due to the lower response to change in saturation.

  • 出版日期2014-5