La surveillance fœtale pendant l'expulsion

Active second phase of labor is at high risk of fetal acidosis, and required a close follow-up of the FHR. The length of maternal bearing down efforts should be matched to the fetal heart rhythm Melchior's classification pattern. Optimal length of bearing down efforts could be 30 min for type 0, 20 min for type 1 and 10 min for type 2, 3 or 4 (NP4).