IRCT20220509054798N1 IRCT 2022-05-21 Babol University of Medical Sciences The effect of oropharyngeal mother’s milk until the beginning of oral feeding in preterm infants on nutritional outcomes The effect of oropharyngeal mother’s milk until the beginning of oral feeding in preterm infants on nutritional outcomes 2022-06-22 anticipated 80 Complete https://irct.ir/trial/63428 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment, Other design features: In other studies, only colostrum was used for a limited time, and its effects on safety issues were investigated. In contrast, breast milk was used in this study and continued until oral feeding, Randomization description: Computer-generated randomization will hide from all physicians, physicians, nurses, parents, and placebo and breastfeeding physicians, Blinding description: Insulin syringes will be used to administer breast milk. One researcher then uses aseptic techniques to prepare insulin syringes with 0.1 ml of sterile breast milk or distilled water. It then labels the syringes and seals them with a matte finish to prevent them from becoming blind. The baby's name is then written on the syringe again. There will be a separate box for each baby to store milk syringes inside the refrigerator shelf and a box for babies in the control group for syringes containing distilled water to be blinded. 3 Nutritional tolerance in premature infants. Intervention 1: Intervention group: Administration of breast milk at the rate of 0.2 ml every 2 hours by the oropharyngeal method. Intervention 2: Control group: Administration of 0.2 ml sterile distilled water every 2 hours by oropharyngeal method. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is No decision has been made.