Women with Low Thyroid Hormone Have Difficult Labor

Dec 23, 2009
Women, who have low levels of thyroid hormone during pregnancy, are at increased risk of prolonged and difficult labor, a new study suggests.

Professor Victor Pop, the leading researcher and his colleagues conducted a study that involved 1000 pregnant women without serious health problems. The study revealed that women, who had decreased levels of thyroxine hormone at 36 weeks of pregnancy were more likely to have their baby positioned wrongly and required assisted delivery.

The researchers say that low to normal levels of thyroxine, which is produced by thyroid gland, may lead to problematic labor for a pregnant woman. Lack of this hormone may prevent baby from moving right during the labor. It also causes such problems as wrong positioning for delivery.  Most babies are positioned with their head down, facing mother's stomach. Mothers with low thyroid hormone tend to have babies badly positioned, which may require assisted delivery by using forceps, ventouse or Caesarean section.

Professor Pop says that earlier findings showed that thyroid function is also important for baby's motor development at the age of two. Babies, who were born in mothers with low thyroid hormone levels, are more likely to have delayed motor development. Scientists stress the importance of checking the level of thyroid hormone during pregnancy to prevent common pregnancy and labor complications.

The study was published in Clinical Endocrinology .