Friday, June 22, 2007

Amnio Miscarriage Higher in Older Women

NEW YORK (Reuters Health) - Among pregnant women undergoing amniocentesis, women over the age of 40 have the greatest risk of miscarriage, according to the results of a new study.

In the study, Dr. Nikolaos E. Papantoniou of the University of Athens, Greece, and colleagues looked back on the medical records of 1,006 women pregnant with a single fetus. Most had bleeding during pregnancy, while about 300 had a history of previous abortions or miscarriage. A second group of more than 4,000 women with no pregnancy risk factors were used as a comparison group. All of the women in both groups underwent amniocentesis.

All of the study participants were divided into three groups by age, which included both the women with miscarriage risk factors and those who had no such risk factors. Among women aged 20 to 34, 2.5% had miscarriages following amniocentesis. In the 35 to 39 age group, 3.4% had miscarriages, while women 40 and older had the highest rate of miscarriage after amniocentesis, at 5.1%.

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