The aim of this quasi-experimental study was to examine the effects of
maternal pethidine during labour on the developing breast feeding beh
aviour in infants in the first 2 h after birth compared with infants n
ot exposed to pethidine. Forty-four healthy infants were observed imme
diately after birth. They were placed skin-to-skin on their mothers' c
hests. The development of mouth and sucking movements as well as rooti
ng behaviour and state of sleep/wakefulness were noted. The observer w
as blind as to the pain relief the mother had received during labour.
Of the 44 mothers 18 had received pethidine, The main findings were th
at infants exposed to pethidine had delayed and depressed sucking and
rooting behaviour. In addition, a smaller proportion of infants expose
d to pethidine started to suckle the breast. Rooting movements which a
re expected to be vigorous at 30 min after birth were affected both by
administration of pethidine and a longer second stage of labour. It i
s suggested that the differences found in sucking behaviour may be a c
entral effect of pethidine. Depression of rooting movements in the pet
hidine group may be caused by exhaustion due to a longer second stage
of labour and administration of pethidine. It is recommended that peth
idine-exposed mother-infant couples stay together after birth long eno
ugh to enable the infant to make the choice to attach or not to attach
to the nipple without the forceful helping hand of the health staff.