What is a painless birth?

Painless delivery refers to the parturient back with an epidural puncture needle under local anesthesia puncture, drugs through the lumbar anesthesia needle into the subarachnoid space, the back left an epidural catheter, connected to a controlled electronic pump, when the parturient feel pain, the drug will be automatically injected into the epidural space, play a role in analgesia. There are three stages of labor: dilation of the cervix, delivery of the fetus and delivery of the placenta. The first stage of labor is the contraction period, through the uterine contractions will open the cervix, this process of puerpera generally needs 8-10 hours, uterine contraction will bring severe pain to the puerpera, anesthesia delivery is mainly anesthesia this process, when the uterus is open to 2-3cm epidural anesthesia, after anesthesia the uterus is still in contraction, but the lower body was anesthesia, no pain. When the uterus is open to 10cm, that is, the cervix is open completely, turn off the analgesic pump and wait for the lower body to recover, but the abdomen and pelvic area are still under anesthesia, so the second stage of labor is also painless.