Skip to main content

Table 3 Arterial blood gases and hemodynamic variables during the five different weaning tests and at 20 minutes after extubation

From: Spontaneous breathing trial and post-extubation work of breathing in morbidly obese critically ill patients

  PSV PSV PSV PSV T piece After extubation
+7 cmH2O PEEP 0 cmH2O PEEP +7 cmH2O PEEP 0 cmH2O PEEP
+7 cmH2O +7 cmH2O 0 cmH2O 0 cmH2O
Ph 7.45 ± 0.06 7.44 ± 0.06 7.44 ± 0.06 7.44 ± 0.06 7.43 ± 0.06 7.42 ± 0.06
PaCO2, mmHg 41 ± 11 42 ± 11 43 ± 12 43 ± 12 44 ± 13 44 ± 10
PaO2/FIO2 277 ± 76 257 ± 81 252 ± 73 230 ± 65 217 ± 65 224 ± 51
SBP, mmHg 148 ± 22 148 ± 26 148 ± 26 146 ± 30 150 ± 18 147 ± 24
DBP, mmHg 72 ± 12 71 ± 12 73 ± 12 72 ± 15 69 ± 13 70 ± 15
HR, beats/minute 96 ± 14 97 ± 16 98 ± 16 100 ± 16 99 ± 14 101 ± 15
  1. There were no statistically significant differences between respiratory variables among the successive tests. Abbreviations: DBP diastolic blood pressure, HR heart rate, ND not done, PEEP positive end-expiratory pressure, PSV pressure support ventilation, SBP systolic blood pressure