After the occurrence of embryonic arrest, some pregnant women may not experience any uncomfortable symptoms, nor do they have vaginal bleeding or abdominal pain.

Embryonic arrest is detected through ultrasound examination, by observing the shape of the gestational sac and whether there is an embryo and fetal heartbeat present. If there is still no fetal heartbeat after eight weeks of pregnancy, it is determined that fetal development has ceased, or if the size of the embryo does not grow progressively with the gestational weeks, it is also judged as embryonic arrest. At this time, timely treatment should be performed, and one can choose either surgical abortion or medical abortion, rather than waiting and observing.