Figure 1.

Experimental Protocol: Continuous non-invasive frequency-domain diffuse optical spectroscopy (FD-DOS) measurements of cerebral hemodynamics were continuously acquired from start of Baseline, through Asphyxia, CPR, and four-hours post-Return of Spontaneous Circulation (ROSC). The association between cerebral hemodynamics and ROSC were examined at baseline, the end of asphyxia, and in the 10th minute of CPR prior to the first defibrillation. VF, ventricular fibrillation; BPM, beats per minute; FiO₂, fraction of inspired oxygen; MAP, mean arterial pressure; KCl, potassium chloride.