Aortic Root Index Calculator

Formula

The formula to calculate the Aortic Root Index is:

\[ ARI = \frac{\text{Aortic Root Diameter (cm)}}{\text{BSA (m²)}} \]

Where:

\( ARI \) is the Aortic Root Index (cm/m²).
Aortic Root Diameter is the diameter of the aortic root (cm).
Body Surface Area is the total surface area of the body (m²).

Example

Let's say the Aortic Root Diameter is 3.5 cm and the Body Surface Area is 1.8 m². The Aortic Root Index would be calculated as follows:

\[ ARI = \frac{3.5}{1.8} \approx 1.94 \text{ cm/m²} \]

So, the Aortic Root Index is approximately 1.94 cm/m².

What is an Aortic Root Index?

The Aortic Root Index is a medical measurement used to assess the size of the aortic root in relation to the patient's body surface area. This index is particularly useful in detecting conditions such as aortic root dilation, which can lead to serious complications like aortic dissection or rupture. The Aortic Root Index is calculated by dividing the diameter of the aortic root by the patient's body surface area, and the result is expressed in cm/m².