Outcome in the second year of life after in-vitro fertilisation by intracytoplasmic sperm injection: A UK case-control study
University of Vic, Vic, Catalonia, Spain The Lancet
(Impact Factor: 45.22).
07/2001; 357(9274):2080-4. DOI: 10.1016/S0140-6736(00)05180-1
There have been reports suggesting that children born after in-vitro fertilisation by intracytoplasmic sperm injection (ICSI) are at increased risk of neurodevelopmental delay. We have undertaken a case-control study of this issue.
We studied 208 singleton children conceived by ICSI and a control group of 221 normally conceived singleton children. Children were recruited from 22 fertility centres and local nurseries throughout the UK. Controls were selected to match cases as closely as possible for social class, maternal educational attainment, region, sex, and race. The primary outcome measure was neurodevelopmental scoring; secondary measures were perinatal outcomes, postnatal health, and congenital abnormalities. A single examiner assessed all the children.
A follow-up rate of 90% for the ICSI group was achieved at a mean age of 17 months. No difference between the study children and controls was found in mean neurodevelopmental scores (98.08 [SD 10.93] vs 98.69 [9.99]) or any subscales on the Griffiths' scales of mental development. Perinatal outcome was similar apart from a higher rate of caesarean section (73 [35.1%] vs 53 [24.0%], p=0.015) and a lower mean birthweight (3163 [SD 642] vs 3341  g, p=0.013) in the study group. Rates of major congenital abnormality were also similar overall (ten [4.8%] study vs ten [4.5%] control), although there were significantly more congenital anomalies among children born to fathers with oligozoospermia than in other children.
This population study did not show any significant difference between children conceived after ICSI and their naturally conceived peers in terms of physical health and development.
Available from: Ramin Mozafari Kermani
- "In this study, the majority (94.3%) of all infants
were normal, but 5.7% of infants had at least one
type of MCM. In comparison with studies in other
countries, our incidence of MCMs in ART infants
is similar to Germany (8%) (14), but is higher than
the reported rate in England (15, 16), Finland (17)
and Poland (18), while lower than the MCM incidence in Australia (19, 20) and Israel (1). Similar
findings were also reported elsewhere (19, 21-24). "
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ABSTRACT: In many countries, 1 to 3% of newborn infants are conceived by assisted reproductive techniques (ART). Despite the success of ART, there is concern about the risk of congenital malformations among these infants. We report our experience to determine whether use of ART is associated with an increase in major congenital malformations or adverse pregnancy outcomes.
Historical cohort study of major congenital malformations (MCM) was performed in 978 births from January 2008 to December 2010. The data for this analysis were derived from a Tehran's ART linked data file by simple sampling method. In our study, the risk of congenital malformations was compared in 326 ART infants and 652 naturally conceived (NC) infants. We also performed multiple logistic regression analyses to calculate the odds ratio (OR) and 95% confidence intervals (CI) for the independent association of ART on each outcome.
We found 56 infants with major congenital malformations, these included 29 NC infants (4.4%) and 27 ART infants (8.3%). In comparison with NC infants, ART infants had a significant 1.94-fold increased risk of MCM.After adjustment for maternal age, infant's sex stillbirth, abortion and type of delivery, we found a relatively small difference in risk (OR=2.04). In this study the majority (94.3%) of all infants were normal but 5.7% of infants had at least one MCM. The prevalence rate for the intracytoplasmic sperm injection (ICSI) was 6.5% for the In vitro fertilisation (IVF) group was 15.9% or 2.73-fold higher than ICSI group (P=0.018). Also we ignore the possible role of genotype and other unknown factors in causing more malformations in ART infants.
Other studies have shown a slightly increased risk of major congenital malformations in pregnancies resulting from ART. Likewise, this study reports a greater risk of MCMs in ART infants than in naturally conceived infants. We also found evidence of a difference in risk of MCMs between IVF and ICSI. Musculoskeletal and urogenital malformations were the most reported MCMs in ART infants according to organs and systems classification.
International journal of fertility & sterility 10/2013; 7(3):217-24. · 0.47 Impact Factor
Available from: Colin M Howles
- "Cognitive and motor development studies using various assessment scales have generally found no differences between ICSI , IVF and naturally conceived children ( Bonduelle et al . , 2003 ; Kristoffersen et al . , 2005 ; Leslie et al . , 2003 ; Leunens et al . , 2006 ; Place and Englert , 2003 ; Ponjaert - Ponjaert - Kristoffersen et al . , 2004 ; Sutcliffe et al . , 2001 ) . Lower scale scores were found for ICSI versus naturally conceived children in two studies ( Bowen et al . , 1998 ; Knoester et al . , 2008 ) . Other parameters are comparable between ICSI children and those in the general population ( i . e . illness / surgical interventions , cognitive / motor development , growth , weight , height"
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ABSTRACT: The Sixth Evian Annual Reproduction (EVAR) Workshop Group Meeting was held to evaluate the impact of IVF/intracytoplasmic sperm injection on the health of assisted-conception children. Epidemiologists, reproductive endocrinologists, embryologists and geneticists presented data from published literature and ongoing research on the incidence of genetic and epigenetic abnormalities and congenital malformations in assisted-conception versus naturally conceived children to reach a consensus on the reasons for potential differences in outcomes between these two groups. IVF-conceived children have lower birthweights and higher peripheral fat, blood pressure and fasting glucose concentrations than controls. Growth, development and cognitive function in assisted-conception children are similar to controls. The absolute risk of imprinting disorders after assisted reproduction is less than 1%. A direct link between assisted reproduction and health-related outcomes in assisted-conception children could not be established. Women undergoing assisted reproduction are often older, increasing the chances of obtaining abnormal gametes that may cause deviations in outcomes between assisted-conception and naturally conceived children. However, after taking into account these factors, it is not clear to what extent poorer outcomes are due to the assisted reproduction procedures themselves. Large-scale, multicentre, prospective epidemiological studies are needed to investigate this further and to confirm long-term health consequences in assisted-conception children.
Assisted reproduction treatment is a general term used to describe methods of achieving pregnancy by artificial means and includes IVF and sperm implantation. The effect of assisted reproduction treatment on the health of children born using these artificial methods is not fully understood. In April 2011, fertility research experts met to give presentations based on research in this area and to look carefully at the evidence for the effects of assisted reproduction treatment on children’s health. The purpose of this review was to reach an agreement on whether there are differences in the health of assisted-conception children with naturally conceived children. The researchers discovered no increased risk in birth defects in assisted-conception children compared with naturally conceived children. They found that IVF-conceived children have lower birth weights and higher fat under the skin, higher blood pressure and higher fasting glucose concentrations than naturally conceived children; however, growth, development and cognitive function are similar between groups. A very low risk of disorders of genetic control was observed in assisted-conception children. Overall, there did not appear to be a direct link between assisted reproduction treatment and children’s health. The researchers concluded that the cause of some differences in the health of children conceived using assisted reproduction treatment may be due to the age of the woman receiving treatment. Large-scale, research studies are needed to study the long-term health of children conceived using assisted reproduction treatment.
Reproductive biomedicine online 01/2013; 28(2). DOI:10.1016/j.rbmo.2013.10.013 · 3.02 Impact Factor
Available from: Alastair G Sutcliffe
- "At the original assessment8 and at follow-up,9 the children were assessed by a single researcher. In their second year (mean age 17.3 months) all children were assessed by a paediatrician. "
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ABSTRACT: There is mixed evidence about the predictive validity of the Griffiths mental developmental scales. This study aimed to assess the predictive value of developmental assessments of children in their second year using the Griffiths mental development scales for neuro-developmental status at five years using the Wechsler preschool and primary scale of intelligence, revised (WPPSI-R). In a longitudinal study 253 children were assessed in their second year of life using the Griffiths scales and again at five years using the WPPSI-R. The scores were compared and the predictability of the WPPSI-R outcome on the basis of Griffiths scores was assessed. The WPPSI-R full scale IQ and the performance IQ at age five could be predicted moderately by the Griffiths general quotient (GQ) and by the personal/social scale. The Griffiths GQ was not a significant predictor of verbal IQ at age 5. The Griffiths performance scale predicted subsequent WPPSI-R performance IQ, and marginally the Full Scale IQ. For the early identification of children at risk for language delay, the Griffiths scales may not be suitable. However, a shortened form would be useful to predict overall cognitive development from the second year to school entry, focussing on the personal-social and performance scales.
Pediatric reports 09/2010; 2(2):e15. DOI:10.4081/pr.2010.e15
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