The evidence available from r and omised controlled trials suggested that delaying the introduction of progressive enteral feeds beyond four days after birth did not reduce the risk of developing NEC in very preterm or VLBW infants , including growth-restricted infants .
Delaying the introduction of progressive enteral feeds result ed in a few days ' delay in establishing full enteral feeds but the clinical importance of this effect was unclear .
BACKGROUND The introduction of enteral feeds for very preterm ( less than 32 weeks ' gestation ) or very low birth weight ( VLBW ; less than 1500 g ) infants is often delayed for several days or longer after birth due to concern that early introduction may not be tolerated and may increase the risk of necrotising enterocolitis ( NEC ) .
However , delaying enteral feeding could diminish the functional adaptation of the gastrointestinal tract and prolong the need for parenteral nutrition with its attendant infectious and metabolic risks .
OBJECTIVES To determine the effect of delayed introduction of progressive enteral feeds on the incidence of NEC , mortality and other morbidities in very preterm or VLBW infants .
Breast milk and neonatal necrotising enterocolitis
In a prospect i ve multicentre study on 926 preterm infants formally assigned to their early diet , necrotising enterocolitis developed in 51 ( 5.5 % ) .  Mortality was 26 % in stringently confirmed cases . In exclusively  formula-fed  babies confirmed disease was 6 - 10 times more common than in those fed breast milk alone and 3 times more common than in those who received formula plus breast milk . Pasteurised donor milk seemed to be as protective as raw maternal milk . Among babies born at more than 30 weeks ' gestation confirmed necrotising enterocolitis was rare in those whose diet included breast milk ; it was 20 times more common in those fed formula only . Other risk factors included very low  gestational age , respiratory disease , umbilical artery catheterisation , and polycythaemia . In formula-fed but not breast-milk-fed infants , delayed enteral feeding was associated with a lower frequency of necrotising enterocolitis . With the fall in the use of breast milk in British neonatal units , exclusive formula feeding could account for an estimated 500 extra cases of necrotising enterocolitis each year . About 100 of these infants would die
The evidence available from r and omised controlled trials suggested that delaying the introduction of progressive enteral feeds beyond four days after birth did not reduce the risk of developing NEC in very preterm or VLBW infants , including growth-restricted infants .
Delaying the introduction of progressive enteral feeds result ed in a few days ' delay in establishing full enteral feeds but the clinical importance of this effect was unclear .
BACKGROUND The introduction of enteral feeds for very preterm ( less than 32 weeks ' gestation ) or very low birth weight ( VLBW ; less than 1500 g ) infants is often delayed for several days or longer after birth due to concern that early introduction may not be tolerated and may increase the risk of necrotising enterocolitis ( NEC ) .
However , delaying enteral feeding could diminish the functional adaptation of the gastrointestinal tract and prolong the need for parenteral nutrition with its attendant infectious and metabolic risks .
OBJECTIVES To determine the effect of delayed introduction of progressive enteral feeds on the incidence of NEC , mortality and other morbidities in very preterm or VLBW infants .