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Table 3 EELV and inhomogeneity index parameters before and after induction of lung injury during baseline

From: Assessment of ventilation inhomogeneity during mechanical ventilation using a rapid-response oxygen sensor-based oxygen washout method

  Before acute lung injury After acute lung injury Mean variation coefficient % N2washout in normal subjects[11]
  (n = 7) (n = 7)   
EELV (mL) 537 (127) 159 (55)** 5.2  
Lung clearance index 6.7 (0.6) 12.7 (4.3)** 10.4 7.1 (1.3)
Mixing ratio 1.2 (0.1) 1.3 (0.1) 7.8 1.57 (0.22)
Becklake index 4.6 (0.5) 11.2 (4.5)** 11.3 3.7 (0.8)
MBAMI (%) 14.6 (6.0) 35.8 (19.4)* 33.5 25 (10)
Moment ratio 1.8 (0.1) 3.0 (0.5)* 5.6 2.02 (0.14)
Pulmonary clearance delay mean (%) 11.0 (4.2) 13.7 (7.8) 29.3 31 (25)
Slope phase 3 capnogram (kPa/L) 2.1 (1.2) 7.0 (3.7)*   
  1. All measurements were performed at 5 cm H2O of PEEP. Capnogram values are averaged over 100 successive breaths and increased significantly after induction of ALI. Values are expressed as mean (SD). *p < 0.05; **p < 0.01 (Wilcoxon matched-pairs test).