In general, incomplete abortions are not preventable, in which 50% of cases are from chromosomal abnormalities. Other cases are due to modifiable etiologies and risk factors such as age, maternal diseases (diabetes, hypertension, renal disease, thyroid issue, polycystic ovary syndrome, lupus, thrombophilia), under or overweight, abnormal uterine, teratogen exposure (drug, alcohol, caffeine, radiation), and infections (human immunodeficiency virus, sexually transmitted infections, Listeria monocytogenes). Consequently, some of the modifiable etiologies or risk factors may result in congenital anomalies, which can cause incomplete abortion.