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Korean Journal of Obstetrics & Gynecology 1999;42(10):2322-2327.
Published online January 1, 2001.
Unexplained Elevated Levels Of Midtrimester Maternal Serum alpha-fetoprotein Are Associated With Spontaneous Preterm Birth.
Sok Bom Kang, Jeong Bin Moon, Ki Joo Lee, Teresa Kim, Joong Shin Park, Jong Kwan Jun, Bo Hyun Yoon, Hee Chul Syn
Abstract
OBJECTIVES
Our purpose was 1) to determine whether elevated maternal serum alpha- fetoprotein(MSAFP) predict increased risk of spontaneous preterm delivery and indicated preterm delivery; 2) to determine whether elevated maternal serum human chorionic gonadotropin(MSHCG) predict increased risk of preterm delivery. Methods: Between September 1995 and April 1998, 945 of 2105 pregnant women who received midtrimester MSAFP screening were identified and evaluated. 81 women with MSAFP levels of 2.0 MoM or more were included in the study group while 864 women with levels less than 2.0 MoM served as controls. Pregnancy outcome were obtained from hospital records and statistical analysis were performed. RESULTS: Women with elevated MSAFP levels showed an increased risk for preterm delivery(p<0.05), fetal growth restriction(p<0.05) and hypertensive disorders(p<0.05), but not for preterm premature rupture of membrane, fetal death in utero. There was a strong association between unexplained elevated MSAFP levels and spontaneous preterm delivery(p<0.05) but our study does not support an association between unexplained elevated MSAFP levels and indicated preterm delivery. There was no association between elevated MSHCG levels and preterm delivery regardless of MSAFP levels. CONCLUSION: We concluded that unexplained elevated levels of midtrimester MSAFP were associated with an elevated risk of spontaneous preterm delivery but not with a risk of indicated preterm delivery. Elevated MSHCG levels were not associated with a risk of preterm delivery and spontaneous preterm birth.
Key Words: Maternal Serum alpha-fetoprotein, Maternal Serum Human Chorionic Gonadotropin, Preterm Delivery, Preterm Labor


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