Final answer:
The lower limit of normal for cervical dilation rate during labor is generally considered to be 1 cm/hour, especially for first-time mothers.
Step-by-step explanation:
The lower limit of normal for cervical dilation rate during the first stage of labor is typically around 1 cm/hour for a first-time mother. In subsequent labors, the dilation may occur at a faster rate. Cervical dilation is necessary for the baby and placenta to be expelled during birth, and the cervix will eventually dilate to about 10 cm. Uterine contractions play a significant role in this process. If labor does not progress, synthetic oxytocin, known as Pitocin, may be given to restart and maintain labor.