Pulmonology
Predicted Body Weight (ARDSNet)
Calculates Predicted Body Weight for lung-protective ventilation.
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Parameters
Predicted Body Weight (ARDSNet) Result
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Formula
Males: 50 + 0.91 × (Height in cm - 152.4)
Females: 45.5 + 0.91 × (Height in cm - 152.4)Clinical Pearls
Crucial for lung-protective ventilation strategies. Setting tidal volume based on actual body weight in obese patients leads to catastrophic volutrauma and barotrauma.
Limitations
Calculations for patients under 152.4 cm (60 inches) technically yield numbers below the base weight, but the formula is generally linear and still utilized, though pediatric tables exist for children.