Optimal Timing for Oocyte Denudation and Intracytoplasmic Sperm Injection
Influence of the timing between oocyte retrieval and denudation on the pregnancy rate (a) and the implantation rate (b). (a) The relation between the probability of pregnancy (Pregn) and the time between oocyte retrieval and denudation () follows the equation / but was not statistically significant ( values: (): 0.1364, ()2: 0.1232). Two curves are represented depending on how many embryos are transferred (white circle) if 1 embryo is transferred and (black circle) if 2 embryos are transferred. (b) The relation between the probability of implantation P(i) and the time between oocyte retrieval and denudation () was statistically significant following the equation ( values: (): 0.03 and ()2 0.03). The best implantation rate was observed for a time between oocyte retrieval and denudation around 1.5 hours.
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