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Table 4 Characteristics of all cases with WiPO and of all cases without WiPO

From: Cardiac dysfunction induced by weaning from mechanical ventilation: incidence, risk factors, and effects of fluid removal

  Cases with WiPO Cases without WiPO P valuea
(n = 75) (n = 204)
Weight gain since admission (%) 11 ± 15 6 ± 16 0.10
Fluid balance over the last 24 h (mL) 292 (−698 to 1023) 300 (−453 to 1115) 1.00
Mechanical ventilation duration before SBT (days) 11 ± 7 11 ± 10 0.68
Left ventricular ejection fraction at baseline (%) 61 ± 13 57 ± 11 0.76
E/E' ratio of the mitral flow at baseline 10.5 ± 4.3 8.8 ± 3.2* <0.01
ScvO2 at baseline (%) 72 ± 6 72 ± 8 0.86
Duration of SBT (min) 48 ± 17 56 ± 11* <0.01
  1. Values are expressed as mean ± standard deviation or median (interquartile range)
  2. aCases with at least one WiPO vs. cases without WiPO
  3. SBT spontaneous breathing trial, ScvO2 oxygen saturation of the central venous blood, WiPO weaning-induced pulmonary oedema