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Table 3 SrO2 Values in before arterial clamping

From: Comparison of the effect of sevoflurane or propofol anesthesia on the regional cerebral oxygen saturation in patients undergoing carotid endarterectomy: a prospective, randomized controlled study

 

Sevoflurane (n = 36)

Propofol (n = 34)

P-value

Ipsilateral

 Mean SrO2 (%)

63.9 ± 6.6

65.3 ± 6.4

0.452

 Minimum SrO2 (%)

61.8 ± 6.6

63.1 ± 7.1

0.407

 Mean value of relative changes in SrO2

   

  compare to baseline (%)

1.3 ± 8.0

− 1.6 ± 8.0

0.237

 Relative maximum decrease in SrO2 (%)

  compare to baseline

3.3 ± 8.8

4.8 ± 9.7

0.504

  compare to post-induction

9.9 ± 6.2

8.1 ± 6.2

0.250

Contralateral

 Mean SrO2 (%)

67.1 ± 7.5

67.3 ± 6.9

0.452

 Minimum SrO2 (%)

66.3 ± 8.0

66.3 ± 7.1

0.992

 Mean value of relative changes in SrO2

  compare to baseline (%)

9.1 ± 20

−1.9 ± 22

0.033

 Relative maximum decrease in SrO2 (%)

  compare to baseline

−3.9 ± 10.1

0.7 ± 10.5

0.019

  compare to post-induction

4.4 ± 3.7

6.6 ± 5.1

0.038

  1. Values are mean ± SD. SrO2 = regional cerebral oxygen saturation