Skip to main content

Table 2 Variables of arterial blood gas analyses during different time periods

From: Hemodynamic effects of short-term hyperoxia after coronary artery bypass grafting

Variable T1 T2 T3
Pre Hyperoxia Post
FiO2 (%) 25 (21–30) 90 (90–90) 21 (21–25)
Arterial blood gas analysesa
 SaO2 (%) 94.9 (1.9) 99.0 (0.3)*** 95.7 (1.8)
 PaO2 (mmHg) 83.5 (12.2) 390.2 (93.2)*** 87.8 (21.5)
 PaCO2 (mmHg) 39.8 (8.1) 36.0 (7.9)** 34.5 (8.7)***
 Hb (mmol L−1) 7.2 (0.8) 7.4 (0.7) 7.4 (0.8)
 Ht (L L−1) 0.34 (0.04) 0.35 (0.03) 0.35 (0.04)
 Glucose (mmol L−1) 7.5 (1.6) 7.4 (1.7) 7.7 (1.8)
 Lactate (mmol L−1) 1.25 (0.38) 1.20 (0.40) 1.25 (0.34)
  1. Data are means (SD). For FiO2, medians (interquartile range) are provided
  2. FiO 2 fraction of inspired oxygen, SaO 2 arterial oxygen saturation, PaO 2 partial pressure of arterial oxygen, PaCO 2 partial pressure of arterial carbon dioxide, Hb hemoglobin, Ht hematocrit
  3. P < 0.01; ** P < 0.001; *** P < 0.0001 for paired comparison between indicated outcome and baseline (T1)
  4. aArterial blood gas samples analyzed prior to the start of hemodynamic measurement