Enter the Aortic Height and Body Surface Area into the calculator to determine the Aortic Height Index. This calculator can also evaluate any of the variables given the others are known.

## Aortic Height Index Formula

The following formula is used to calculate the Aortic Height Index (AHI).

AHI = Aortic Height (cm) / (BSA) (m^2)

Variables:

- AHI is the Aortic Height Index (cm/m^2)
- Aortic Height is the measured height of the aorta (cm)
- BSA is the Body Surface Area (m^2)

To calculate the Aortic Height Index, divide the measured height of the aorta by the Body Surface Area. The result is the Aortic Height Index, which is a measure of the relative size of the aorta in relation to the body surface area.

## What is an Aortic Height Index?

The Aortic Height Index (AHI) is a measurement used in medical imaging to assess the size of the aorta in relation to the patient’s body size. It is calculated by dividing the maximum height of the aorta by the patient’s height. This index is particularly useful in identifying abnormalities such as aneurysms or dissections in the aorta, as it provides a more accurate assessment of aortic size than absolute measurements, which do not take into account variations in body size.

## How to Calculate Aortic Height Index?

The following steps outline how to calculate the Aortic Height Index (AHI).

- First, determine the Aortic Height (cm).
- Next, determine the Body Surface Area (m^2).
- Next, gather the formula from above = AHI = Aortic Height (cm) / Body Surface Area (m^2).
- Finally, calculate the Aortic Height Index (AHI).
- After inserting the variables and calculating the result, check your answer with the calculator above.

**Example Problem:**

Use the following variables as an example problem to test your knowledge.

Aortic Height (cm) = 10

Body Surface Area (m^2) = 1.5