Critical Care Research and Practice

Research Article

Heart-Protective Mechanical Ventilation in Postoperative Cardiosurgical Patients

Table 5

Changes in oxygenation, elimination of CO₂, and acid-base balance of arterial blood in patients from the control group, median (25^th; 75^th percentile), n = 24.


Data	Hours in ICU
Data	#1	#2	#3

PaO₂/FiO₂ (mmHg)	245.0 (211.0; 298.5)	284.0 (242.0; 326.0)	284.0 (260.5; 348.5)	<0.001, = 0.03
PaCO₂ (mmHg)	29.9 (28.5; 32.4)	35.9 (34.3; 37.8)	36.6 (34.4; 38.8)	<0.001, = 0.32
etCO₂ (mmHg)	27.0 (25.0; 29.0)	33.0 (31.8; 34.3)	33.5 (32.0; 35.0)	<0.001, = 0.15
Arterial рН	7.45 (7.40; 7.48)	7.41 (7.37; 7.43)	7.40 (7.37; 7.43)	<0.001, = 0.15
РаСО₂ >45 mmHg (rate)	4.2%	16.7%	20.8%	= 0.081, = 0.712, = 0.157
Arterial рН <7.35 (rate)	0	4.2%	0	= 1, = 0.313
Arterial ВЕ	−0.85 (−2.0; 0.8)	−1.4 (−2.6; −0.8)	−2.2 (−3.7; −1.1)	<0.001, = 0.01, = 0.02
Arterial	22.4 (21.4; 23.6)	21.9 (21.3; 23.2)	21.8 (20.9; 22.8)	= 0.003, = 0.03, = 0.2

PaO₂/FiO₂: respiratory index; PaCO₂: partial pressure of carbon dioxide in arterial blood; etCO₂: expired carbon dioxide; P: Wilcoxon test.