Fig. 6

Evaluation of serum laboratory values and fetal heart rate in non-insufflated control fetuses (n = 3) and insufflated fetuses (n = 4) over time. In uteroa, pH and b, arterial carbon dioxide levels increased significantly in insufflated fetuses versus non-insufflated control fetuses. c Oxygen levels and d, heart rate were unchanged in insufflated fetuses versus non-insufflated control fetuses. Data shown as mean ± standard deviation