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[Changes in selenium in patients with pregnancy-induced hypertension].

Selenium concentration of maternal blood, urine, placenta and cord blood were determined in 30 cases of normal late pregnancy and 40 cases of PIH. The results showed: selenium concentration of maternal blood, urine and placenta were obviously lower in PIH than that in normal pregnant women. The more severe was the PIH the lower was the selenium level. There was no significant difference in cord blood between 2 groups. The selenium concentration of neonatal infant blood was higher than that of maternal blood. A positive correlation of selenium concentrations was observed between maternal blood and placenta in patients with severe PIH.