Milk consumption and hydration status of exclusively breast-fed infants in a warm climate.
To assess the hydration status of 40 exclusively breast-fed Peruvian infants, their milk intake and urinary volume and concentration were measured during 8-hour daytime observations. Maximum home temperatures ranged between 26 degrees and 33 degrees C; environmental relative humidity ranged between 49% and 96%. The infants consumed between 105 and 528 gm milk during the observation period; the standardized intakes ranged between 4.0 and 12.1 gm/kg body weight per hour (mean +/- SD 7.5 +/- 1.7 gm). The infants voided between 0.9 and 6.3 ml urine per kilogram of body weight per hour (mean +/- SD 3.4 +/- 1.3 ml). The maximum urinary specific gravity in each infant ranged between 1.003 and 1.017. We conclude that healthy infants can maintain adequate hydration status while exclusively breast-fed under these environmental conditions.
Brown
K H
KH
Creed de Kanashiro
H
H
del Aguila
R
R
Lopez de Romana
G
G
Black
R E
RE
D001942:Breast Feeding; D005260:Female; D006801:Humans; D007223:Infant; D008834:Microclimate; D009994:Osmolar Concentration; D010568:Peru; D013046:Specific Gravity; D014329:Tropical Climate; D014556:Urine / Q000032:analysis; D014882:Water-Electrolyte Balance