Table 1. Embryo cultures with and without renewal
Clinical results Total (%) With renewal (%) Without renewal (%) p-value
nº of patients 82 38 44 -
nº of mature oocytes 689 318 371 0.901
Fertilization rate (%) 589 (85.49) 264 (83.02) 325 (87.60) 0.256
Blastocyst development (%) 348 (59.08) 157 (59.47) 191 (58.77) 0.269
nº of transferred embryos 159 73 86 0.725
Positive β-hCG (%) 54 (65.85) 24 (63.16) 30 (68.18) 0.632
Clinical pregnancy rate (%) 51 (62.2) 22 (57.89) 29 (65.91) 0.455
Implantation rate (%) 79 (49.69) 36 (49.32) 43 (50.00) 0.330