What is the normal amniotic fluid index?

Amniotic Fluid Index (AFI) is a commonly used indicator to evaluate fetal amniotic fluid volume. Amniotic fluid is an important component of the environment in which the fetus grows and develops in the womb, providing protection, nutrition and support. The measurement of amniotic fluid index can help doctors determine the health status of the fetus and plays an important role in prenatal diagnosis and management. Measuring method of amniotic fluid index Amniotic fluid index is usually measured in the third trimester of pregnancy, usually between 28 and 40 weeks of gestation. During the measurement process, the pregnant woman needs to lie on her back, and the doctor uses an ultrasound probe to slide on the pregnant woman\’s abdomen and measure the depth of amniotic fluid in four different parts at the same time. These four depth values ​​are then added together to obtain the amniotic fluid index. Under normal circumstances, the amniotic fluid index range should be between 5-25cm. The significance of amniotic fluid index: The measurement results of amniotic fluid index can reflect the amount of amniotic fluid in the fetus, thereby determining whether the fetus is in a normal growth environment. Too much amniotic fluid (polyamnios) or too little (oligoamnios) may have an impact on the health of the fetus. Polyhydramnios may increase the risk of fetal congenital malformations, placental abruption, placenta previa and other complications. Polyamniotic fluid may also increase the fetal range of motion, leading to serious complications such as umbilical cord prolapse. Low amniotic fluid may affect fetal growth and development and increase the risk of complications such as premature birth and intrauterine distress. Low amniotic fluid may also lead to abnormal development of the fetus\’s kidneys and urinary system. Therefore, by measuring the amniotic fluid index, possible problems with the fetus can be detected early, and corresponding prenatal management and intervention measures can be taken to ensure the health and safety of the fetus. Causes of Abnormal Amniotic Fluid Index Abnormal amniotic fluid index may be caused by a variety of reasons, including abnormal placental function, placental abruption, placenta previa, fetal urinary system abnormalities, intrauterine distress, etc. In addition, maternal nutritional status, gestational diabetes, high blood pressure, etc. may also affect the amniotic fluid index. Treatment of Abnormal Amniotic Fluid Index If the amniotic fluid index is abnormal, your doctor may perform further tests to determine the cause. For example, a fetal ultrasound to assess the development and health of the fetus, or to assess placental function. Depending on the specific situation, doctors may take different treatment measures, such as adjusting the pregnant woman\’s diet and living habits, giving appropriate medication, and performing fetal monitoring. In short, the measurement of amniotic fluid index is one of the important means for prenatal assessment of fetal health. The normal amniotic fluid index range is 5-25cm. If the measurement results are abnormal, you should seek medical attention in time for further examination and treatment. Early detection and management of amniotic fluid abnormalities can help ensure the health and safety of the fetus.