<prompt> IVF is mainly done for -Uterine factorTubal blocksMale partner has a count of 12 millionmlNone of the above  <response>: Ans. is b i.e., Tubal blocks In vitro fertilization and embryo transfer IVF-ETIndicationsi Tubal pathologyblocksii Male factor: count less than 5 millionmLiii 6 IUI failuresBasic steps of IVF Ovarian stimulation with gonadotropins and follicular monitoring Oocyte retrieval ovum pickup done through TVS-guided needle Fertilization: 50,000 sperms are put on each oocyte retrieved Embryos kept in incubator for 48-72 h ET done on day 2 or day 3 48-72 h after oocyte retrieval Generally 2-4 embryos are transferred in the uterine cavity via catheter and deposited 1 cm below the fundus Success rate of IVF per cycle is 30-35 