Fig. 4: Ductal shunting patterns with lung recruitment in the birth transition.
From: Pulmonary perfusion with dynamic PEEP recruitment or sustained inflation at birth in preterm lambs
Changes in net (a), right-to-left (R→L, b) and left-to-right (L→R, c) ductal blood flow in the baseline fetal state (F), at varying levels of PEEP during the dynamic PEEP (dynPEEP) maneuver over ∼4.5 min, or the equivalent time-period after an initial ∼40 s sustained inflation (SI, gray column) followed by mechanical ventilation at a PEEP of 8 cmH2O, with data depicted in the same format as in Fig. 1. Values are means ± SD; n = 7 for SI and n = 9 for dynPEEP groups. Note that (1) only one limb of the bidirectional SD is to aid visualization, and (2) black horizontal lines are plateaus during dynPEEP.
