Table 2. Lung and Chest Wall Mechanics at Different Inspired Carbon Dioxide Concentrations (Fico²) in Seven Normal Subjects Anesthetized with Diazepam (A) or Isoflurane (B)

Values are mean ± SD for interrupter (Rint) and additional resistance (ΔR) and quasi-static elastance (Est) of lung (l) and chest wall (w). Values are significantly different from A under iso-Fico²conditions (

* P < 0.001;

† P < 0.05), at Fico²= 0 (

‡ P < 0.01), and at Fico²= 0.05 (

§ P < 0.01).