AFI stands for amniotic fluid index, a measurement used to assess the amount of amniotic fluid surrounding a fetus during pregnancy.
Amniotic fluid is the clear, watery fluid that cushions and protects the baby in the womb. The amount of amniotic fluid changes throughout pregnancy, with levels typically increasing until about 34 weeks of gestation.
The AFI is determined by ultrasound, where a trained medical professional measures the largest pocket of fluid in each of the four quadrants of the uterus. The sum of these measurements is the AFI score.
A normal AFI score ranges between 8 and 18 centimeters. A low AFI score may indicate oligohydramnios, a condition where there is too little amniotic fluid. Conversely, a high AFI score may indicate polyhydramnios, a condition where there is too much amniotic fluid.
Both oligohydramnios and polyhydramnios can be associated with complications during pregnancy and delivery. Therefore, monitoring AFI levels is an important part of prenatal care.
Here are some potential causes of low AFI:
- Premature rupture of membranes (PROM): When the amniotic sac breaks before labor.
- Placental insufficiency: When the placenta is unable to deliver enough oxygen and nutrients to the baby.
- Fetal abnormalities: Some birth defects can affect the amount of amniotic fluid.
- Maternal conditions: Certain medical conditions in the mother, such as diabetes or high blood pressure, can affect AFI levels.
Here are some potential causes of high AFI:
- Gestational diabetes: High blood sugar levels in the mother can lead to excess fluid production.
- Fetal abnormalities: Certain birth defects can lead to an increase in amniotic fluid.
- Multiple pregnancies: Having twins, triplets, or more babies can increase the amount of amniotic fluid.
Note: If you have any concerns about your AFI levels, please consult with your healthcare provider.
