ABSTRACT
Objective To compare the embryo development and pregnancy outcomes of patients by using two different 17?gauge aspiration needles in transvaginal ultra?sound guided oocyte retrieval. Methods A retrospective study was performed to analysis the embryo development and pregnancy outcomes of patients by using different oocytes aspiration needle:import needle(group A)and domestic needle(group B),including puncture follicles,oocytes rate,cleavage,available embryos,high?quality embryo,the total fertility rate,bleeding, moderately severe OHSS incidence,pregnancy rate,embryo implantation rate and abortion rate,etc. Results There was no significant statistical difference in the two different ovum aspiration needles. Conclusion The embryo development and pregnancy outcomes were similar with both needles. Each needle has its advantages and flaws in transvaginal ultra?sound guided oocyte retrieval ,and we should make a comprehensive choice weighing the practical situation of patients,cost,effectiveness and the doctors' preferences.