We determined whether children who are extremely anxious during the inducti
on of anesthesia are more at risk of developing postoperative negative beha
vioral changes compared with children who appear calm during the induction
process. Children (n = 91) aged 1-7 yr scheduled for general anesthesia and
elective outpatient surgery were recruited. Using validated measures of pr
eoperative anxiety and postoperative behaviors, children were evaluated dur
ing the induction of general anesthesia and on Postoperative Days 1, 2, 3,
7, and 14. Using a multivariate logistic regression model, in which the dep
endent variable was the presence or absence of postoperative negative behav
ioral changes and the independent variables included several potential pred
ictors, we demonstrated that anxiety of the child, time after surgery, and
type of surgical procedure were predictors for postoperative maladaptive be
havior. The frequency of negative postoperative behavioral changes decrease
d with time after surgery, and the frequency of negative postoperative beha
vioral changes increased when the child exhibited increased anxiety during
the induction of anesthesia. Finally, we found a significant correlation (r
) of 0.42 (P = 0.004) between the anxiety of the child during induction and
the excitement score on arrival to the postanesthesia care unit. We conclu
de that children who are anxious during the induction of anesthesia have an
increased likelihood of developing postoperative negative behavioral chang
es. We recommend that anesthesiologists advise parents of children who are
anxious during the induction of anesthesia of the increased likelihood that
their children will develop postoperative negative behavioral changes such
as nightmares, separation anxiety, and aggression toward authority. Implic
ations: Anesthesiologists who care for children who are anxious during the
induction of anesthesia should inform parents that these children have an i
ncreased likelihood of developing postoperative negative behavioral changes
.