Amniotic fluid depth and index at 36 weeks

Apr 11, 2023 Source: Cainiu Health

Dr. Lv Aiming

Introduction

At 36 weeks of gestation, the amniotic fluid volume is generally around 1000 ml, with a depth measurement typically ranging from 8 cm to 18 cm. The amniotic fluid depth refers to the maximum depth of the amniotic pool, while the amniotic fluid index (AFI) is the sum of the depths measured in four quadrants. At 36 weeks of pregnancy, the gestational period is considered late term. During color ultrasound examination, an AFI less than 8 cm indicates oligohydramnios (low amniotic fluid). If follow-up examinations show values returning to normal, no intervention is usually required.

At 36 weeks of gestation, amniotic fluid volume is generally around 1000 ml, and the amniotic fluid index (AFI) typically ranges from 8 cm to 18 cm.

The deepest vertical pocket (DVP) refers to the maximum depth of the amniotic fluid pool, while the amniotic fluid index is the sum of the fluid depths measured in four quadrants of the uterus. At 36 weeks of pregnancy, which falls within the third trimester, if ultrasound examination reveals an AFI less than 8 cm, it indicates oligohydramnios (low amniotic fluid). In such cases, pregnant women are advised to drink more water, maintain adequate rest, and undergo regular monitoring; if levels return to normal, no specific intervention is required. If the AFI is below 5 cm, it indicates severe oligohydramnios, which may be associated with fetal distress. Continuous fetal heart rate monitoring is necessary, and if abnormalities occur, termination of pregnancy via cesarean section should be performed under medical guidance. If the AFI exceeds 18 cm, it suggests polyhydramnios (excessive amniotic fluid), which may be linked to gestational diabetes. Pregnant women should visit the hospital for confirmation, engage in appropriate physical activity, reduce intake of high-sugar foods, monitor blood glucose levels regularly, and seek immediate medical treatment if any abnormalities arise.

It is recommended that pregnant women maintain a balanced diet during pregnancy, ensure adequate nutrition, engage in mild exercise, and keep a positive mood.

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