Critical Care Research and Practice / 2015 / Article / Tab 2

Research Article

Open and Closed Endotracheal Suctioning and Arterial Blood Gas Values: A Single-Blind Crossover Randomized Clinical Trial

Table 2

ABG indices in the OS and CS techniques at four measurement times.

ABG indicesTechniqueTime
Before suction (T0)1 min after suction (T1)5 min after suction (T2)15 min after suction (T3) value

PaO2Open103.91 ± 8.27114.44 ± 9.4798.45 ± 7.94100.10 ± 7.46<0.001
Closed104.49 ± 7.38107.50 ± 7.56103.97 ± 7.53104.27 ± 7.66<0.001
value0.67<0.001<0.0010.002

PaCO2Open38.21 ± 3.4439.54 ± 3.8040.55 ± 4.0239.13 ± 4.13<0.001
Closed38.46 ± 3.1936.95 ± 3.0936.81 ± 3.1836.81 ± 3.18<0.001
value0.61<0.001<0.001<0.001

SaO2Open96.25 ± 1.8897.22 ± 1.8894.17 ± 3.0994.77 ± 2.74<0.001
Closed96.13 ± 2.1196.44 ± 2.0495.89 ± 2.2196.04 ± 2.01<0.001
value0.60<0.001<0.001<0.001

The results of the Wilcoxon test.
The results of Freidman’s rank test.