Skip to main content

Table 2 Oxygen saturation measurements in physiological states

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

Intracuff pressure (cmH2O)

n

Oxygen saturation (%)

  

SpO2trachea

SvO2blood

0

20

70.2 ± 6.2 (57–76)

74.4 ± 4.3 (62.6–76.4)

10

20

74.2 ± 4.7 (62–77)

74.4 ± 4.4 (62.5–76.9)

20

20

74.2 ± 4.8 (62–77)

74.3 ± 4.3 (62.4–76.7)

40

20

74.2 ± 4.6 (61–76)

74.4 ± 4.3 (62.3–76.9)

60

20

74.2 ± 4.6 (62–77)

74.3 ± 4.4 (62.5–77.1)

Overall

100

72.5 ± 6.8 (57–77)

74.4 ± 6.3 (61.9–77.2)

Overall excluding 0 cmH2O

80

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.