The blood glucose concentration was measured once daily during the fir
st five days of life in forty appropriate-for-gestational age preterm
infants in intensive care. They received human milk and 10 % glucose p
erorally and intravenously. Moderate hypoglycemia (B-Gluc < 2.5 mmol/l
) was common in these infants (42 %) during the first three days of li
fe. Four infants had severe hypoglycemia (B-Gluc < 0.6 mmol/l) during
the first day of life. These data suggest that screening for hypoglyce
mia will be needed for optimal treatment in preterm infants in intensi
ve care.