Endometrial
degeneration |
-
 1. Anatomical factor of uterus
|
Check for abnormalities through hysteroscopy |
-
 Thin endometrium
|
Endometrial stimulation and biopsy, various medications (Viagra, high-dose estrogen, etc.) |
-
 Immunological factors
|
Immunoglobulin, steroid, heparin, aspirin administration |
-
 Thrombosis
|
Blood tests to check for any blood circulation disorders in the placenta |
| Poor embryo quality |
Genetic abnormality :
genetic screening test before implantation |
Check for chromosomal abnormalities |
| hardening egg coat |
Assisted incubation or blastocyst embryos |
| Other |
hardening egg coat |
Use of gonadotropin-releasing hormone agents |
| Hydrosalpinx |
Resection of the fallopian tube by performing laparoscopic surgery |