According to northrop heparin spuc 3 to 5 days, when abortion aura symptoms, personal physique different treatment time is different also, if there is a premonitory abortion need to go to a hospital checking in time, according to their own situation under the guidance of the rational use of drugs, and drug use during see recovery situation, if use 3 days later returned to normal bleeding, no longer consider spuc success can be withdrawal, if in the process of the drug or bleeding, had better use two days, pay attention to the drug also can't use the time is too long, so as to avoid adverse effects on the body.

　　During protecting a fetus, it is better to have regular B ultrasound examination, look at fetal development, suggest to rest in bed at the same time, reasonable complement vitamin E to be able to prevent abortion, also cannot eat the food such as longan, hawthorn easy abortion, more cannot be in pregnancy with the same sex will increase the chance of abortion.