My friend have congenital heart disease and is pregnant right now.. how many percent of chances can she survive?

Delends: Pregnancy may have little if any effect on some patients with congenital heart disease whereas it may be very dangerous or or even life-threatening in others. It depends a lot on the type of congenital defect and its effects on the expecting mother.

More detail needed: More detail is needed. The spectrum of congenital heart disease is broad. Many types of congenital heart disease will have no effect on either the mother's or the baby's health in pregnancy. Other forms of congenital heart disease can severely affect both the mother's health or the baby's health during pregnancy.