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Table 4 Changes in SpO2trachea and SvO2blood in hemorrhagic shock status

From: A preliminary study on the monitoring of mixed venous oxygen saturation through the left main bronchus

Time n Oxygen saturation (%)
   SpO2trachea SvO2blood
Pre-shock period 20 74.6 ± 4.5 (62–78) 74.3 ± 4.7 (62.6–76.8)
Immediately after onset of shock 20 74.2 ± 4.3 (60–78) 74.8 ± 4.6 (61.9–77.2)
15 min after shock 20 61.2 ± 4.8 (52–67) 61.7 ± 4.3 (52.4–68.2)
30 min after shock 20 42.2 ± 4.6 (41–54) 42.8 ± 4.7 (41.3–55.9)
15 min after resuscitation 20 51.8 ± 4.6 (49–63) 51.3 ± 4.4 (49.5–62.6)
30 min after resuscitation 20 64.5 ± 6.8 (57–77) 64.2 ± 6.3 (57.9–77.2)
60 min after resuscitation 20 74.2 ± 4.2 (61–77) 74.4 ± 4.3 (61.2–77.6)
  1. Values are means ± SEM (range). SpO2trachea, mixed venous oxygen saturation measured through the left main bronchus; SvO2blood, oxygen saturation from pulmonary artery samples.