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Changes in heart rate, mean arterial blood pressure, and end-tidal carbon dioxide during anesthesia. Shading: chest compression, Gray arrow: increase in amplitude of the R-wave, Gray arrowhead: ST segment depression confirming, White arrow: epinephrine administration, Black arrow: VF confirming, White arrowhead: return of spontaneous circulation. The time frame is relative to the administration of iohexol (T0) where 1 min since administration is T1, 2 min is T2, etc.
