Extended embryo culture and an increased risk of preterm delivery
Obstetrics and Gynecology, 06/26/2012
Kalra SK et al. – Extended culture of embryos from cleavage stage to blastocyst stage increases the risk of preterm delivery. Unless blastocyst transfer results in a reduction in multiple births, it may be contributing to the perinatal morbidity associated with IVF–assisted conception.



