Mothers in developing countries are being successfully taught to give
an oral rehydration solution (ORS) at home. The quantity of oral rehyd
ration fluid that mothers administer to their child remains a critical
question. Inadequate quantities render oral rehydration therapy (ORT)
ineffective. The primary focus of our investigation was direct measur
ement of the quantity of fluid unsupervised mothers gave their childre
n at home. This study validates a methodology that provides precise in
formation on ORS administration in the home, information essential for
evaluating the effectiveness of home-based therapy and for planning p
rogrammes to influence unsupervised mothers to correctly administer OR
S to their sick children. This study, conducted in the Kingdom of Leso
tho, assessed the impact on home care of the national control of diarr
hoeal disease (CDD) programme. Direct observations in the home establi
shed each child's status and the quantity of fluid used 24 hr after ch
ildren left the ORT unit where mothers were instructed to give ORS at
home. Data were gathered on natural consequences that might discourage
use of ORS, such as vomiting, increased frequency of watery stools an
d distaste for the solution. The health status of most of the 197 chil
dren followed improved. The average volume of ORS administered was 544
ml. A full liter was given by 21% of the mothers. Only 3% of the moth
ers gave no ORS. The average dose was 65 ml/kg. Younger children got a
bout the same volume as older children, thus. they received a higher m
l/kg dose. Mothers gave more ORS to children who had more symptoms of
diarrhoeal disease at the time they were brought to the clinic. Mother
s who said that their child liked the taste of ORS gave more than thos
e who reported that their children did not like the taste. There was n
o relationship between loose stool frequency reported by mothers and q
uantity of ORS given. Interviewers were able to obtain acceptable volu
me estimates from mothers by identifying the container used to adminis
ter ORS in the home and asking how often it was filled. Using this app
roach, 81% of the mothers accurately recalled how much ORS they had ad
ministered. This technique may make it possible to obtain accurate est
imates of quantities of supplementary liquids such as juice, tea and s
oup given in the home.