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. Author manuscript; available in PMC: 2016 Oct 1.
Published in final edited form as: Anesthesiology. 2015 Oct;123(4):765–774. doi: 10.1097/ALN.0000000000000798

Table 2.

Regional cerebral oxygenation (rSO2) values (mean ± standard deviation) at the set ventilatory points of the study for the study group and for each anesthetic choice.

Supine Beach Chair

Set Point 1 Set Point 2 Set Point 3 Set Point 4 Set Point 5
Fio2 0.3
Petco2 30 mmHg
Fio2 0.3
Petco2 30 mmHg
Fio2 1.0
Petco2 30 mmHg
Fio2 1.0
Petco2 45 mmHg
Fio2 0.3
Petco2 30 mmHg
Combined
N=56
68 ± 12 61 ± 12
(p<0.001)
66 ± 12
(p<0.001)
75 ± 12
(p<0.001)
65 ± 13
(p<0.001)
Propofol
N=29
67 ± 13 59 ± 13
(p<0.001)
64 ± 14
(p<0.001)
74 ± 12
(p<0.001)
64 ± 14
(p<0.001)
Desflurane
N=27
69 ± 11 62 ± 10
(p<0.001)
67 ± 11
(p<0.001)
76 ± 11
(p<0.001)
67 ± 12
(p<0.001)

Fio2 = Fraction of inspired oxygen; Petco2 = partial pressure of end-tidal carbon dioxide

P-values represent comparison of successive set points within anesthetic type (ie: Set Point 1 compared to Set Point 2, Set Point 2 compared to Set Point 3, etc).