"Epidural analgesia had no impact on the risk of caesarean section or long-term backache, and did not appear to have an immediate effect on neonatal status as determined by Apgar scores or in admissions to neonatal intensive care." - Cochrane meta analysis: https://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD....

Have you seen a childbirth, and one without an epidural? There's so much pain that it's not going to be guiding anything. Physicians monitor the status of the infant via fetal heart rate monitoring and monitor the progression of the delivery.