Prone Positioning ARDS Eligibility & Session Calculator

Determines eligibility for prone positioning in ARDS and calculates session parameters. Indicated for severe ARDS with PaO2/FiO2 <150 mmHg on FiO2 ≥0.6, PEEP ≥5 cmH2O, and TV 6 mL/kg IBW after ≥12 hours of optimization. Sessions: minimum 16 hours. PROSEVA trial: 28-day mortality 16% (prone) vs 32.8% (supine) in severe ARDS. Continue daily sessions until PF consistently >150 after resupination.

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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 to Use

Enter the values for the scenario you are assessing. Determines eligibility for prone positioning in ARDS and calculates session parameters. Indicated for severe ARDS with PaO2/FiO2 <150 mmHg on FiO2 ≥0.6, PEEP ≥5 cmH2O, and TV 6 mL/kg IBW after ≥12 hours of optimization. Sessions: minimum 16 hours. PROSEVA trial: 28-day mortality 16% (prone) vs 32.8% (supine) in severe ARDS. Continue daily sessions until PF consistently >150 after resupination. Use the prone positioning ards result to inform your calculation.

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Frequently Asked Questions