Infant pulmonary function tests (PFTs) have proven increasingly popula
r and useful for clinical and research purposes. Informed consent requ
ires accurate information on side effects. Our aim was to quantify min
or side effects from a parental point of view by means of a questionna
ire. The parents of 97 infants attending for PFTs were asked to comple
te a simple questionnaire. Eighty-one parents (84%) returned the quest
ionnaire. Forty-one percent felt that their infants were not troubled
by the process of administering the sedative chloral hydrate, whereas
55% suffered mild to moderate distress. In contrast, 94% of infants we
re not distressed by the actual PFTs. Similarly, 46% of parents were n
ot distressed by the administration of sedative to their infant, with
49% expressing distress to a mild or moderate degree. Although 73% of
parents were not distressed by watching their infants undergo the PFTs
, 27% were to a mild to moderate degree. Seventy-three percent of infa
nts were untroubled on waking. Seventy percent of infants had a good n
ights sleep after the PFTs. The vast majority of parents (94%) were ha
ppy to recommend that others allow their infants to undergo similar te
sting. We noted that most problems caused by infant PFTs relate to the
administration of the sedative. Most infants awake from the tests not
distressed and sleep normally the following night. (C) 1998 Wiley-Lis
s, Inc.