Researchers say the important link is also found among those who routinely slept through the day or sleep longer than the average in the evening, with the risk of a baby born in a State of death.
Tomasina Stacey of the Department of Obstetrics and Gynecology at the University of Auckland, indicates that the restriction of blood flow to the baby when the mother lie flat in the right direction for a long time could explain the link. The study, published in the British Medical Journal (BMJ).
However, Stacey says, the discovery of a small number of women that need to be confirmed again to the research-more detailed research before the health recommendations are given.
"It's a new hypothesis which means we have to start looking at this issue more closely again. This is really a starting point for research in the future, "said Stacey in a telephone interview with Reuters. When the invention is confirmed again the truth, then they might discover how simple, inexpensive and natural in order to reduce the number of babies born in the State of the dead.
"This is something that can be changed very easily. You don't need to take drugs of any kind and no side effects. "
A series of studies led by researchers from the World Health Organization (WHO) and published earlier this year found that more than 2.6 million pregnancies a year end in stillbirth, mostly occurs in women in poor countries. This means that every day more than 7,200 babies were born dead.
Stacey's team interviewed 158 women in Auckland who gave birth to a baby born dead between July 2006 and June 2009 while their gestational age at least 28 weeks. These women compared to the governing group of 310 women who are pregnant. All of them were questioned in detail about the position of his sleep and about sleep patterns and wakes up before pregnancy and in the months, weeks, and last night before they know and believe her baby had died.
They were also questioned about snoring pattern, sleepy in the daytime, whether they are a sleep routine throughout the day in the last month of pregnancy, the duration of sleep at night, and how many times get up to go to the toilet at night. The results showed no relationship between snoring or sleepy during the day and the risk of a baby born dead. However, an important connection found between NAPs, or sleeping for longer than the average in the evening, with the risk of a baby born dead.
Woman sleeping giant or lying on the right side of the last night of pregnancy are more likely to have babies born dead, while women who wake up to to the toilet once or not at all at night are also more likely to have babies born dead compared to the women who wake up more often.
The results of this research can not be a benchmark that patent, however can be an alternative prevention that does no harm to be done. In his commentary on the research in BMJ, Lucy Chappell, Professor of maternal and fetal medicine from King's College London, said that the research results must be interpreted cautiously until other studies was held.
