Objective:to analyze the anxiety level of the mothers of newborns with congenital
malformations who were diagnosed in prenatal and postnatal care. Methods:a cross-sectional study with 115 mothers of 117 newborns with congenital
malformation admitted to three neonatal units. A questionnaire containing
maternal and neonatal variables was used, as well as the Trait-State Anxiety
Inventory. Data were analyzed by Student’s t-test and Kolmogorov-Sminorv
test. The anxiety level was categorized as low (percentile <25), moderate
(25-75) and high (> 75), with a significance level of 5%. Results:most mothers had moderate levels of anxiety. Regarding the diagnosis of the
malformation, 57% received the news in the prenatal and 43% in the postnatal
period. The anxiety level of those who received the prenatal diagnosis was
lower than those who received in the postnatal period, evaluated by the
Trait Anxiety Inventory (p = 0.026). Conclusion:mothers of newborns with malformations presented moderate anxiety, and this
was higher when the diagnosis was given in the postnatal period. The use of
the Trait-State Anxiety Inventory can provide guidance to other studies and
to clinical practice.