Definition of Circulation, fetal
Circulation, fetal: The blood circulation in the fetus (an unborn baby). Before birth, blood from the fetal heart that is destined for the lungs is shunted away from the lungs through a short vessel called the ductus arteriosus and returned to the aorta. When this shunt is open, it is said to be a patent ductus arteriosus (PDA). The PDA usually closes at or shortly after birth, allowing blood to course freely to the lungs.Source: MedTerms™ Medical Dictionary
Last Editorial Review: 6/9/2016
Top RxList Drug News
Parenting and Pregnancy
Get tips for baby and you.