Wadau..patient is 23 yrs old,Gravida 2 para 1 living 1..presenting with lower abdominal pain for 3hrs,preceeded by vaginal bleeding-fresh blood. her BP 111/80 pulse 123 Fetal heart rates not appreciated by a fetoscope. The working diagnosis is abruptio placenta.. My querry is-if it is abruptio placenta,how long will it take from the abruptio to fetal death??could it be that the fetal heartrate is not appreciated by the fetoscope but an ultrasound will show some hope of life??