Delayed labour occurs in :

Ans. is a, b and c i.e. Early use of epidural anesthesia with analgesia; Early use of analgesia; Unripened cervix; and Use of sedative early in course of labour Delayed / prolonged labour: "Labour is said to be prolonged when the combined duration of the first and second stage is more than the arbitrary time limit of 18 hours or when the cervical dilatation rate is less than 1 cm/hr and descent of the presenting pa is c 1 cm/hr for a period of 4 hours (WHO-1994)."