There is no such thing as a success rate for gestational sacs with empty sacs, and it is up to the individual to decide whether or not it will be successful. If the time of conception is short and the diameter of the gestational sac is small, the gestational sac can be successful. If the embryo has already stopped, then you need to clear the uterus in time to terminate the pregnancy. If the average diameter of the gestational sac is more than 2.5-3cm, but the ultrasound examination still does not show fetal heart, fetal buds, etc., can be diagnosed as embryonic sterilizations, at this time, it is meaningless to carry on the birth control, and need to terminate the pregnancy by removing the uterus in a timely manner. If the diameter of the gestational sac is still small, there is no fetal heart, fetal buds, but there is abdominal pain or vaginal bleeding and other symptoms of preeclampsia, can be diagnosed as preeclampsia, the need for timely birth control. If the birth control is more than two weeks, ultrasound observation of fetal heart, fetal buds still do not exist, then the diagnosis of embryonic sterilizations, if the birth control process gradually appeared fetal heart fetal buds, it is indicated that the birth control is successful. Early pregnancy need to go to the hospital in time for ultrasound examination, if any uncomfortable symptoms should be highly attention, timely medical treatment.