Skip to main content

Table 3 Oxygenation and acid-base variables, and fluid balance in all patients, and in survivors and non-survivors.

From: Lung Function and Organ Dysfunctions in 178 Patients Requiring Mechanical Ventilation During The 2009 Influenza A (H1N1) Pandemic

  Day 0 Day 3 Day 7 Day 10
  All S NonS P All S NonS P All S NonS P All S NonS P
N 178 93 85   152 89 63   129 80 42   73 38 35  
PaO2 (mmHg) 97 (71 to 124) 98 (76 to 120) 92 (67 to 129) .50 94 (76 to 122) 98 (79 to 105) 87 (72 to 117) .06 96 (79 to 115) 104 (84 to 125) 81 (73 to 102) .001 96 (73 to 15) 106 (76 to 118) 84 (72 to 110) .06
PaCO2 (mmHg) 44 ± 14 43 ± 12 46 ± 15 .22 44 ± 13 43 ± 13 46 ± 13 .14 47 ± 11 44 ± 10 51 ± 11 .02 47 ± 13 42 ± 10 52 ± 14 .001
Arterial pH 7.29 ± 0.1 7.31 ± 0.1 7.27 ± 0.1 .007 7.34 ± 0.1 a 7.37 ± 0.1 7.29 ± 0.1 c .004 7.36 ± 0.1 a 7.39 ± 0.1 7.33 ± 0.1 .002 7.37 ± 0.1 c 7.41 ± 0.1 7.32 ± 0.1 .002
HCO3 (mEq/L) 21 ± 5 20 ± 6 22 ± 5 .16 24 ± 5 b 24 ± 5 a 22 ± 5 .02 27 ± 5 a 27 ± 5 28 ± 5 b .55 27 ± 5 c 27 ± 5 28 ± 7 .75
Fluid balance (ml/day) 785 (130; 1,802) 715 (98; 1,810) 1,000 (170; 1,800) .99 1,050 (74; 210) 695 (-86; 2,025) 1,350 (505; 2,560) .02 900 (-352;-1,785) 700 (-470;-1,770) 1,000 (-172; 1,810) .75 129 b (-673; 1,100) 0 b (-800; 1,050) 757 (-450; 1,415) .07
  1. Data are presented as means ± standard deviations, and medians and (IQR)
  2. NonS, Non-survivors. P, Intergroup comparisons (between survivors vs. non-survivors) at each day are shown. S, Survivors.
  3. For intragroup comparisons over time: Days 3, 7 and 10 are compared to Day 0 values, in all patients, in survivors and in non-survivors.
  4. a P < .001; b P < .01; c P < .05