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Table 2 Equations for calculating pulmonary mechanics in ventilated patients

From: Bench-to-bedside review: Distal airways in acute respiratory distress syndrome

Static compliance

Tidal volume/(Pplat - PEEP)

Total lung resistance

(Ppeak - Pplat)/flow

Airways resistance

(Ppeak - Pinit)/flow

Viscoelastic resistance

(Pinit - Pplat)/flow

  1. Flow, inspiratory flow rate; PEEP, positive end-expiratory pressure; Pinit = initial pressure; Ppeak = peak airway pressure; Pplat = plateau pressure.
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Critical Care

ISSN: 1364-8535