共 38 条
Additive effect of factors related to assisted conception on the reduction of maternal serum pregnancy-associated plasmaprotein A concentrations and the increased false-positive rates in first-trimester Down syndrome screening
被引:28
作者:
Bellver, Jose
[1
,2
]
Casanova, Cristina
[1
]
Garrido, Nicolas
[1
]
Lara, Coral
[1
]
Remohi, Jose
[1
,2
]
Pellicer, Antonio
[1
,2
]
Serra, Vicente
[1
,2
]
机构:
[1] Inst Valenciano Infertilidad, Valencia 46015, Spain
[2] Univ Valencia, Fac Med, Dept Pediat Obstet & Ginecol, Valencia, Spain
关键词:
First-trimester Down's syndrome screening;
free beta hCG;
PAPP-A;
assisted conception;
false-positive rates;
REPRODUCTIVE TECHNOLOGIES ART;
HUMAN CHORIONIC-GONADOTROPIN;
ALPHA-FETOPROTEIN LEVELS;
IN-VITRO FERTILIZATION;
FREE BETA-HCG;
SINGLETON PREGNANCIES;
NUCHAL TRANSLUCENCY;
PAPP-A;
GESTATIONAL-AGE;
MARKERS;
D O I:
10.1016/j.fertnstert.2013.06.045
中图分类号:
R71 [妇产科学];
学科分类号:
100211 ;
摘要:
Objective: To analyze whether assisted conceptions need adjustments in first-trimester Down syndrome screening and why modifications in screening markers occur. Design: Eleven-year cohort retrospective analysis. Setting: Maternal-fetal medicine unit. Patient(s): Two thousand eleven naturally conceived normal singleton pregnancies and 2,042 normal singleton pregnancies achieved with assisted conception: 350 by IUI and 1,692 with IVF (n = 328) or intracytoplasmic sperm injection (ICSI; n = 1,364), using nondonor (n = 1,086) or donated ova (n = 606), with fresh (n = 1,432) or frozen (n = 260) embryos. Intervention(s): Comparison of ultrasound and biochemical markers of first-trimester Down syndrome screening according to the mode of conception and considering the clinical and laboratory parameters related. Main Outcome Measure(s): Nuchal translucency (NT), PAPP-A and free beta hCG maternal serum concentrations, and false-positive rates (FPRs). Result(s): NT is unaffected by the mode of conception. Singleton pregnancies achieved by IVF and ICSI with nondonor oocytes have reduced maternal serum PAPP-A and increased FPR, which are significant only in ICSI cycles. Pregnancies from frozen embryos with hormone therapy also show decreased PAPP-A but without affecting the FPR. Elevated maternal serum f beta hCG levels in oocyte donation do not influence the FPR. Conclusion(s): Among assisted conceptions, only nondonor IVF/ICSI singleton pregnancies need adjustments of the maternal serum PAPP-A in first-trimester Down syndrome screening. (C) 2013 by American Society for Reproductive Medicine.
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页码:1314 / +
页数:10
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