**5.1 Pain management**

For many years the idea of immaturity of the nervous system in the pediatric population was defended, reducing the importance of acute and postoperative pain management; at present it is well-known that the structures responsible for pain transmission are formed from the 30th week of gestation [10].

Postoperative pain from cleft lip and palate surgery is considered acute, superficial, somatic, and of significant intensity that causes irritability with vigorous crying [10, 28, 29]. The nerve branches involved depend on the type and location of the defect [10]:
