Low birth defects by deselecting abnormal spermatozoa before ICSI.
Reprod Biomed Online
; 28(1): 47-53, 2014 Jan.
Article
em En
| MEDLINE
| ID: mdl-24268728
ABSTRACT
Consistent evidence from meta-analysis has linked assisted conception by IVF, and particularly intracytoplasmic sperm injection (ICSI), with an increased risk of major birth defects. To compare the risk of major malformations of children born after standard ICSI and after intracytoplasmic injection of morphologically selected spermatozoa (IMSI), a prospective population-based study was conducted from 2005 to 2010. ICSI and IMSI were performed in only one assisted reproduction unit according to its classification of spermatozoa and using fresh semen. Medical data and follow up during 2 years of 1028 infants were collected. Major malformations were identified and classified by an external independent physician. The two groups were similar concerning the parents' age, treatment, number of oocytes recovered, days of transfer, gestational age and birthweight. However, major malformations were significantly lower with IMSI (6/450, 1.33%) versus ICSI (22/578, 3.80%; adjusted odds ratio 0.35, 95% confidence interval 0.14-0.87, P=0.014), mainly affecting boys (adjusted odds ratio 2.84, 95% confidence interval 1.24-6.53, P=0.009). In conclusion, the significantly decreased risk of major birth defects associated with IMSI remained decreased after multivariate adjustment and highlights the beneficial effect of sperm selection before ICSI.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Espermatozoides
/
Anormalidades Congênitas
/
Injeções de Esperma Intracitoplásmicas
Tipo de estudo:
Etiology_studies
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Observational_studies
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Prognostic_studies
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Risk_factors_studies
Limite:
Female
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Humans
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Male
Idioma:
En
Revista:
Reprod Biomed Online
Assunto da revista:
MEDICINA REPRODUTIVA
Ano de publicação:
2014
Tipo de documento:
Article