Amniotic Fluid Index Calculator

Formula

The formula to calculate the Amniotic Fluid Index (AFI) is:

\[ \text{AFI} = \text{D1} + \text{D2} + \text{D3} + \text{D4} \]

Where:

\( \text{AFI} \) is the Amniotic Fluid Index (cm)
\( \text{D1} \) is the depth of the largest vertical pocket of amniotic fluid in Quadrant 1 (cm)
\( \text{D2} \) is the depth of the largest vertical pocket of amniotic fluid in Quadrant 2 (cm)
\( \text{D3} \) is the depth of the largest vertical pocket of amniotic fluid in Quadrant 3 (cm)
\( \text{D4} \) is the depth of the largest vertical pocket of amniotic fluid in Quadrant 4 (cm)

What is Amniotic Fluid Index?

The Amniotic Fluid Index (AFI) is a score given to quantify the amount of amniotic fluid seen on an ultrasound of a pregnant woman. It is used to determine if the levels of amniotic fluid are normal, low, or high. This measurement is important because it can help identify potential issues with the pregnancy, such as problems with the baby’s development or the mother’s health. The AFI is calculated by dividing the mother’s abdomen into four sections and measuring the depth of the fluid in each section.

Example Calculation

Let's assume the following values:

Depth of Largest Vertical Pocket in Quadrant 1 (D1) = 3 cm
Depth of Largest Vertical Pocket in Quadrant 2 (D2) = 4 cm
Depth of Largest Vertical Pocket in Quadrant 3 (D3) = 2 cm
Depth of Largest Vertical Pocket in Quadrant 4 (D4) = 5 cm

Using the formula to calculate the Amniotic Fluid Index:

\[ \text{AFI} = 3 + 4 + 2 + 5 = 14 \text{ cm} \]

The Amniotic Fluid Index is 14 cm.