Gorlin Formula Aortic Valve Area Calculator

Calculates aortic valve area (AVA) using the Gorlin formula: AVA = CO / (HR × SEP × 44.3 × √ΔP), where CO = cardiac output (L/min), HR = heart rate (beats/min), SEP = systolic ejection period (sec/beat), and ΔP = mean aortic valve pressure gradient (mmHg).

Weight
Height
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.
Advertisement

How It Works

Calculates aortic valve area (AVA) using the Gorlin formula: AVA = CO / (HR × SEP × 44.3 × √ΔP), where CO = cardiac output (L/min), HR = heart rate (beats/min), SEP = systolic ejection period (sec/beat), and ΔP = mean aortic valve pressure gradient (mmHg)

Each component has a specific meaning:

  • Gorlin formula: AVA = CO / (HR × SEP × 44 — The gorlin formula: ava = co / (hr × sep × 44 recorded for the scenario being assessed.

Note: Interpret the gorlin aortic valve area result against the thresholds and context described above.

How to Use

Enter the Gorlin formula: AVA = CO / (HR × SEP × 44 for the scenario you are assessing. Calculates aortic valve area (AVA) using the Gorlin formula: AVA = CO / (HR × SEP × 44.3 × √ΔP), where CO = cardiac output (L/min), HR = heart rate (beats/min), SEP = systolic ejection period (sec/beat), and ΔP = mean aortic valve pressure gradient (mmHg). Use the gorlin aortic valve area result to inform your calculation.

Related Calculators

Aortic Stenosis Severity

Medical

MVA Pressure Half-Time

Medical

Framingham HF Criteria

Medical

Frequently Asked Questions