Fig. 1: Blood pressures and heart rate with lung recruitment in the birth transition.
From: Pulmonary perfusion with dynamic PEEP recruitment or sustained inflation at birth in preterm lambs
Changes in mean aortic trunk (AoT, a), pulmonary trunk (PT, b) and left atrial (LA, c) blood pressures and heart rate (d) (1) in the baseline fetal state (F), (2) during step changes of PEEP in 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, and (3) in both groups from 6 to 30 min after birth. Values are means ± SD; n = 7 for SI and n = 9 for dynPEEP groups; * P ≤ 0.043, dynPEEP vs. SI (two-way repeated measures ANOVA with post hoc Fisher least significant difference tests). Note that only one limb of the bidirectional SD is displayed to aid visualization.
