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La transferencia de embriones frescos en vez de congelados parece que es un factor de riesgo de tales problemas.
La investigación incluyó a 17.726 niños, nacidos tras 15.035 ciclos de ART. Esta muestra fue comparada con los resultados de nacimientos ocurridos en Australia en 1999.
Cerca de un tercio de niños de ART nacieron a pretérmino y una cuarta parte tuvieron LBW. Ambos problemas fueron más comunes en caso de partos simples o de mellizos, de niños de ART, y también entre las mujeres nulíparas.
Los niños concebidos con embriones frescos tuvieron un 30% mayor de probabilidades de nacer prematuramente que los concebidos con embriones congelados. El LBW fue un 50% más habitual en casos de concepción con embriones frescos que con congelados.
Webs Relacionadas
University of New South Wales
Fertility and Sterility