| Apgar Score |
The first test most babies are given (at one and five minutes after birth). Assesses five basic indicators of health: respiration, pulse, activity level, response to stimulation, and appearance. |
Afterbirth (Placenta) |
A common term for the placenta after it has been delivered. |
Alpha-Fetoprotein (AFP) |
Protein produced by the fetus's liver that can be detected in the mother's blood most accurately between the 16th and 18th weeks of pregnancy. High levels may be associated with a neural tube birth defect called spina bifida; low levels may be associated with Down syndrome. |
| Amniocentesis |
A test to determine possible obstetric complications or genetic defects usually performed between the 15th and 18th weeks of pregnancy. Amniotic fluid is drawn from a pregnant woman's uterus by inserting a hollow needle through her abdominal wall. |
| Amniotic Fluid |
Clear fluid in the amniotic sac in which the fetus grows. Cushions the fetus, allows for fetal movement, helps the lungs develop, stabilizes the baby's temperature, and provides a barrier against infection. |
| Anencephaly |
A rare birth defect resulting in little or no brain and a malformed skull. |
| Anterior Position |
When the baby faces the back of the mother's pelvis in utero and/or during labor. |
| Areola |
The dark area on the breast surrounding the nipple, which may spread or darken further during pregnancy. |
| Asthma |
A chronic lung and breathing disorder. Ranges from mild wheeziness to serious constriction of the bronchial tubes. |