[Thyroid dysfunctions and pregnancy]

To study thyroid dysfunctions during pregnancy.

Descriptive, transversal and retrospective study of 61 thyroid dysfunctions during pregnancy, from January 1982 to December 2002.

There were 44 hyperthyroidism (1 in 1,908 deliveries: 0.05%) and 17 hypothyroidism (1 in 4,939: 0.02%). Main findings in hyperthyroid patients were: 30-34 years and 2 gestations (34.11%), arterial hypertension (15.90%), abortions (9.09%), preterm delivery (9.09%), term delivery (56.82%), cesarean section (25%), medical treated (97.78%), fetal weighs 3,000-3,499 g (25.61%), 1 and 5 minutes Apgar 8-10 points (60.54 and 81.59%), perinatal mortality rate 0.07 per 1,000 and there was no maternal mortality. And in hypothyroid women: 25-29 years (64.72%), one gestation (29.44%), abortions (17.64%), premature rupture of membranes and oligoamnios (17.64%), term delivery (35.28%), medical treated (100%), fetal weighs 2,500-2,999 g (56.25%), 1 and 5 minutes Apgar 8-10 points (78.58% and 78.58%) and there was no preterm delivery and perinatal or maternal mortality.

Thyroid dysfunctions are infrequent in pregnancy and have little repercussions in perinatal morbidity and mortality.