Placenta previa bleeding can be stopped and the pregnancy can progress. Is this possible with vasa previa?
No. There is nothing that we actively do to stop bleeding from a placenta previa. Bleeding from a placenta previa occurs because the attachment of the placenta to the uterus breaks (peels off). Often the bleeding stops as a result of the formation of blot clots in the area that has separated. Bleeding from a vasa previa occurs because the vessel has been torn. Possibly the vessel could spasm and close down flow, but flow is usually so brisk that clots get washed away before they can seal the tear.
