Document Detail


Perinatal outcome of singleton siblings born after assisted reproductive technology and spontaneous conception: Danish national sibling-cohort study.
MedLine Citation:
PMID:  20813359     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
OBJECTIVE: To compare the perinatal outcome of singleton siblings conceived differently.
DESIGN: National population-based registry study.
SETTING: Denmark, from 1994 to 2008.
PATIENT(S): Pairs of siblings (13,692 pairs; n = 27,384 children) conceived after IVF, intracytoplasmatic sperm injection (ICSI), frozen embryo replacement (FER), or spontaneous conception subcategorized into five groups according to succession: [1] IVF-ICSI vs. spontaneous conception (n = 7,758), [2] IVF-ICSI vs. FER (n = 716), [3] FER vs. FER (n = 34), [4] IVF-ICSI vs. IVF-ICSI (n = 2,876), and [5] spontaneous conception vs. spontaneous conception (n = 16,000).
INTERVENTION(S): Observations were obtained from national registries.
MAIN OUTCOME MEASURE(S): Birth weight, gestational age, low birth weight (<2,500 g), preterm birth (<37 weeks' gestation) and perinatal deaths.
RESULT(S): Mean birth weight was 65 g (95% confidence interval [CI], 41-89] lower in all assisted reproductive technology children compared with their spontaneously conceived siblings. FER children were 167 g (95% CI, 90-244] heavier than siblings born after replacement of fresh embryos. The difference in birth weight between firstborn and second born sibling depended on order of conception method. Higher risk of low birth weight with (odds ratio [OR], 1.4; 95%CI, 1.1-1.7] and preterm birth (OR, 1.3; 95% CI, 1.1-1.6] was observed in IVF/ICSI compared with spontaneous conception.
CONCLUSION(S): When differentiating between order and mode of conception, it seems that assisted reproductive technology plays a role in mean birth weight and risk of low birth weight and preterm birth. Birth weight was higher in siblings born after FER compared with fresh embryos replacement.
Authors:
Anna-Karina Aaris Henningsen; Anja Pinborg; Ojvind Lidegaard; Christina Vestergaard; Julie Lyng Forman; Anders Nyboe Andersen
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Fertility and sterility     Volume:  95     ISSN:  1556-5653     ISO Abbreviation:  Fertil. Steril.     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-02-22     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0372772     Medline TA:  Fertil Steril     Country:  United States    
Other Details:
Languages:  eng     Pagination:  959-63     Citation Subset:  IM    
Copyright Information:
Copyright © 2011 American Society for Reproductive Medicine. Published by Elsevier Inc. All rights reserved.
Affiliation:
Fertility Clinic, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.
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