†These authors contributed equally.
Academic Editor: Johannes Ott
Background: micro-testicular sperm extraction (TESE) has been the
first choice for Nonobstructive azoospermia (NOA) patients for its higher sperm
retrieval rate under microscope, meanwhile, sperm or oocyte cryopreservation are
widely applied in in-vitro fertilization (IVF) treatment. But few researches have
systematically explored the effect of oocyte and sperm cryopreservation in one
study. Methods: we retrospectively collected and analyzed the data of
fertilization and pregnancy of patients who underwent micro-TESE using fresh or
vitrified-warmed gametes in our center to assess the effect of gametes
cryopreservation. Results: we compared the clinical results using fresh
or vitrified-warmed gametes in NOA patients after micro-TESE, respectively. We
found that the the rates of fertilization and good-quality embryo using fresh
gametes were 52.37