Does having a fetal pole and fetal heartbeat indicate a higher likelihood of viability?

Patient's question:

No

Doctor's answer:

Hello, the development of the embryo, 30--40 days forms the gestational sac, 40--50 days forms the embryo, and 50--60 days forms the fetal heart. It is recommended to do an ultrasound around 60 days to check if the gestational sac, embryo, and fetal heart are normal.