Fig. 5
From: The timing of umbilical cord clamping at birth: physiological considerations
Simultaneous pulmonary blood flow and airway pressure recordings made in a ventilated newborn lamb. Note that whenever the peak airway pressure coincides with systole, the systolic peak in pulmonary blood flow is reduced, particularly compared with the systolic peaks that coincide with periods when airway pressure is low between inflations. The reductions in pulmonary blood flow result from transient increases in pulmonary vascular resistance caused by the increase in airway pressure. Asterisks indicate good examples of peak pulmonary blood flow reductions coinciding with peak inflation pressures