Marfan Syndrome Aortic Root Z-Score Calculator

Calculates age- and BSA-adjusted aortic root Z-score for Marfan syndrome using Roman nomogram to determine surgical urgency and monitor growth rate.

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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 age- and BSA-adjusted aortic root Z-score for Marfan syndrome using Roman nomogram to determine surgical urgency and monitor growth rate

Each component has a specific meaning:

  • Roman nomogram — The roman nomogram recorded for the scenario being assessed.

Note: Interpret the marfan aortic z-score result against the thresholds and context described above.

How to Use

Enter the Roman nomogram for the scenario you are assessing. Calculates age- and BSA-adjusted aortic root Z-score for Marfan syndrome using Roman nomogram to determine surgical urgency and monitor growth rate. Use the marfan aortic z-score result to inform your calculation.

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Frequently Asked Questions