Experimental time line.
Arrows indicate time points for experimental interventions.
Arterial and central venous pressure tracings showing electrical induction of ventricular fibrillation. After the onset of ventricular fibrillation, there is a loss of pulsatile waveforms and a rapid decline in the arterial and central venous pressures. The pressures do not fall to zero because vascular tone maintains some intravascular pressure. Arterial and central venous pressure waveforms during external closed chest compression. Inc. All rights reserved.