Marfan Syndrome Aortic Root Dissection Risk Calculator

Calculates aortic dissection risk in Marfan syndrome using aortic root Z-score (age/BSA-indexed diameter), family history of dissection, and rate of aortic growth to determine surgical threshold.

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Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Calculates aortic dissection risk in Marfan syndrome using aortic root Z-score (age/BSA-indexed diameter), family history of dissection, and rate of aortic growth to determine surgical threshold

Each component has a specific meaning:

  • Aortic root Z-score — The aortic root z-score recorded for the scenario being assessed.
  • Family history of dissection — The family history of dissection recorded for the scenario being assessed.
  • Rate of aortic growth — The rate of aortic growth recorded for the scenario being assessed.

Note: Interpret the marfan aortic risk result against the thresholds and context described above.

How to Use

Enter the aortic root Z-score, family history of dissection, rate of aortic growth for the scenario you are assessing. Calculates aortic dissection risk in Marfan syndrome using aortic root Z-score (age/BSA-indexed diameter), family history of dissection, and rate of aortic growth to determine surgical threshold. Use the marfan aortic risk result to inform your calculation.

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