Fetal arrest can be caused by a number of reasons, for example, when the quality of the sperm and egg is not particularly good, it can affect the development of the fetus and cause the chances of stopping the heartbeat to occur. If you are overworked, stay up late, or don’t pay attention to your eating habits, it may cause a miscarriage and the fetus to stop developing. When there is a drop in progesterone, including blood HCG, it may cause miscarriage and also cause the fetus to stop developing. When there are chromosomal abnormalities and a decline in immune function, all of which may induce the fetus to stop developing. When this happens, termination of pregnancy is preferred whenever possible, and three months after the termination is completed, a back-up and pregnancy can be carried out, with adequate pre-pregnancy testing done whenever possible, to avoid another cessation of fetal development.