Volume 77, Pages 54-60.e1 (December 2017) Visual and Quantitative Electroencephalographic Analysis in Healthy Term Neonates Within the First Six Hours and the Third Day of Life José R. Castro Conde, MD, PhD, Desiré González Barrios, MD, Candelaria González Campo, MD, Nieves L. González González, MD, PhD, Beatriz Reyes Millán, MD, Alejandro Jiménez Sosa, PhD Pediatric Neurology Volume 77, Pages 54-60.e1 (December 2017) DOI: 10.1016/j.pediatrneurol.2017.04.024 Copyright © 2017 The Authors Terms and Conditions
Figure 1 Discontinuous tracing with transient rolandic sharp waves (arrows). (The color version of this figure is available in the online edition.) Pediatric Neurology 2017 77, 54-60.e1DOI: (10.1016/j.pediatrneurol.2017.04.024) Copyright © 2017 The Authors Terms and Conditions
Figure 2 Electroencephalography samples of discontinuous background at less than six hours (A) and tracé alternant at third day of life (B) in the same newborn infant. Asymmetrical delta brushes (arrow) and discontinuity (arrow double headed) are observed in (A). Topographic maps of the spectral power for each frequency band at less than six hours (18 minutes of recording) and at the third day of life (20 minutes of recording) in this same neonate are shown in (C); in descending order: delta, theta, alpha, and beta in the first 6 hours and after 48 hours of life. The values in the color scale represent absolute power spectrum in μV2. (The color version of this figure is available in the online edition.) Pediatric Neurology 2017 77, 54-60.e1DOI: (10.1016/j.pediatrneurol.2017.04.024) Copyright © 2017 The Authors Terms and Conditions
Figure 3 Comparative results of relative power analysis in T3C3 for the theta frequency band (A) and in C4Cz for the delta (B), theta and alpha (C) frequency bands, and alpha/delta and theta/delta ratios (D) in the first six hours and after 48 hours of life. Pediatric Neurology 2017 77, 54-60.e1DOI: (10.1016/j.pediatrneurol.2017.04.024) Copyright © 2017 The Authors Terms and Conditions
Figure 4 ROC curve analysis to determine the optimal cutoff point of the theta/delta ratio to discriminate between the two cohorts. AUC, area under the curve; CI, confidence interval; +PV, positive predictive value; −PV, negative predictive value; ROC, receiver operating characteristic. (The color version of this figure is available in the online edition.) Pediatric Neurology 2017 77, 54-60.e1DOI: (10.1016/j.pediatrneurol.2017.04.024) Copyright © 2017 The Authors Terms and Conditions