The time from 10ml to 40ml of milk for preterm infants is as short as 2 to 3 days and as long as 1 to 2 weeks.
The initial milk intake of preterm infants is calculated at about 10-20ml/kg per day, and the milk intake is gradually increased, with individual differences in different birth weights, postnatal weight gain, and gestational ages, and the time from 10ml to 40ml is as short as 2-3 days and as long as 1-2 weeks.
Preterm infants have poor sucking ability, swallowing ability and breathing ability, the initial milk quantity is calculated according to 10-20ml/kg per day, the interval feeding time is 2 hours or 3 hours, and the milk quantity is gradually increased.
Some preterm infants can be fed directly by mouth, while some need to be fed through a gastrostomy tube or nasogastric tube. The younger the gestational age or the lighter the baby, the slower the rate of milk increase, while the older the gestational age or the heavier the baby, the faster the rate of milk increase, which can reach about 20-50 ml per increase.