Researchers found: 65% of pregnancies with a fetal pole and yolk sac later showed a heartbeat by 7–8 weeks. Incorrect dating accounted for 40% of cases where no heartbeat was detected early.

The yolk sac plays an important part in the early stages of pregnancy. Find out what it does and how it works.

Transvaginal sonogram (TVS) showed an intrauterine gestational sac and yolk sac, no fetal pole visualised. She was discharged home with a diagnosis of threatened abortion. The patient returned to the ...

Gestational sac 25 mm or greater with no fetal pole detected Fetal pole 7 mm with no heartbeat Yolk sac greater than 7 mm. Because pregnancy loss is common, you probably know more people than you ...

The pregnant uteri were transported to the Laboratory for Cultivation and Cell Therapy of the Veterinary Medicine Department USP/FZEA, Pirassununga. Patterning of hematopoietic cells from a bovine ...