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Intensive Care Medicine Experimental

Table 1 Respiratory variables at baseline and after the induction of lung injury

From: Moderately high frequency ventilation with a conventional ventilator allows reduction of tidal volume without increasing mean airway pressure

Variable

Baseline

After lung injury

P/ F ratio (mmHg)

427 [368,473]

97 [67,130]*

Shunt (%)

13 [12,15]

23 [16,32]*

Tidal volume (sternal)

4.8 [3.7,5.9]

4 [4.5,3.5]

Tidal volume (ventral)

4.2 [3.0,5.4]

2.5 [2,3]

Cstatic (mL/cmH2O)

27 [15,30]

12 [9,14]

Resistance (cmH2O/L/s)

8 [7,10]

18 [14,26]*

  1. Values are presented as median [P25th,P75th] Cstatic and P/F denote static compliance and the ratio of arterial oxygen concentration to the fraction of inspired oxygen, respectively. *p < 0.05 vs baseline, Wilcoxon’s signed rank test.
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