Table 8
Approximate relationship between arterial blood saturation (Sa
o
2
) and arterial oxygen tension (Pa
o
2
) 60
Pa
o
2
(kPa)
4
5
6
7
8
9
10
11
12
13
14
15
16
⩾17
Pa
o
2
(mm Hg)
30
37.5
45
52.5
60
67.5
75
82.5
90
97.5
104
112.5
120
⩾127.5
Sa
o
2
(%)
57.4
71.4
80.7
86.8
90.7
93.2
94.9
96.2
97.0
97.8
98.2
98.6
98.8
⩾99.0