What is the amniotic fluid index at 39 weeks?

We all know that amniotic fluid is an essential nutrient to maintain the normal growth and development of the fetus. However, if there is too little amniotic fluid in the late pregnancy, there is a risk of giving birth at any time. Therefore, many pregnant women during pregnancy, especially when they are about to give birth at 39 weeks, are always worried that they have too little amniotic fluid, which will cause fetal hypoxia and bring some harm. Let's take a look at the amniotic fluid index at 39 weeks.

What is the amniotic fluid index at 39 weeks?

We call the colorless, transparent fluid surrounding the baby in the uterus amniotic fluid. Amniotic fluid protects the fetus from external impacts, participates in the fetal metabolism, protects the mother, and reduces discomfort caused by fetal movement. During a normal pregnancy, the amount of amniotic fluid gradually increases with the gestational age, generally reaching about 1000 ml at 38 weeks of pregnancy and about 800 ml at full term.

Amniotic Fluid Index (AFI): The uterus is divided into four quadrants at right angles using the umbilical horizontal line and the linea alba as markers. The vertical diameter of the largest amniotic fluid pool in each quadrant is measured, and the sum of the four is the amniotic fluid index.

The normal value range is: 8 to 24 cm.

Too much or too little amniotic fluid is an abnormal condition and requires the attention of expectant mothers.

39 weeks amniotic fluid index standard

It is normal for the amniotic fluid index to reach 10-18cm in the late pregnancy.

During a normal pregnancy, the amount of amniotic fluid increases with the gestational age and begins to gradually decrease in the last 2 to 4 weeks. At full-term pregnancy, the amount of amniotic fluid is about 1000 ml (800 to 1200 ml).

If oligohydramnios is found in late pregnancy, after excluding fetal malformations, a detailed assessment of the fetal intrauterine condition can be conducted to promote fetal lung maturity; when the fetus matures, the pregnancy should be terminated as soon as possible. The method of terminating pregnancy can be vaginal induced labor or cesarean section, and the specific choice should be based on the condition of the fetus and the mother. In this case, most women can give birth to a healthy baby.

Polyhydramnios in late pregnancy is a common clinical condition. The Department of Obstetrics and Gynecology said: Polyhydramnios in late pregnancy is abnormal and may be a sign of abnormal fetal development, so you should go to the hospital for diagnosis and treatment in time.

Polyhydramnios in late pregnancy is a common clinical condition, and it is abnormal. If you are diagnosed with polyhydramnios, your doctor will ask you to do a high-definition B-ultrasound examination to see if there are any malformations in the fetus. Your doctor may also order amniocentesis to check for genetic defects in the fetus. Your doctor will also monitor you closely during your labor. Due to excessive amniotic fluid, there is a higher risk of umbilical cord prolapse (the umbilical cord falling out of the cervix) or placental abruption when the water breaks. Both situations require an immediate cesarean section (C-section).

The above is an introduction to the amniotic fluid index at 39 weeks. I hope it will be helpful to many pregnant mothers after understanding it. In addition, women must go to the hospital in time for prenatal check-ups during pregnancy, especially in the late pregnancy. During this period, you must pay more attention to the baby's fetal movements. Once there is too little amniotic fluid, it may cause frequent fetal movements. Therefore, if there is too little amniotic fluid, you must go to the hospital immediately to prepare for delivery.