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Table 2 Absolute values and changes of somatic tissue oxygen saturation (SstO2) and cerebral tissue oxygen saturation (SctO2) at different time points (n = 26)

From: Tourniquet-induced tissue hypoxia characterized by near-infrared spectroscopy during ankle surgery: an observational study

 

T0

Tend

Tpost

ΔTpost-0a

ΔTpost-endb

SstO2-distal (%)

77.5 ± 7.7

15.6 ± 9.7

90.9 ± 4.0

13.8 ± 8.0*

75.4 ± 11.5*

SstO2-prox (%)

82.3 ± 6.1

81.1 ± 7.8

78.4 ± 7.3

−3.6 ± 4.5*

−2.7 ± 2.3*

SstO2-contra (%)

81.2 ± 6.8

81.3 ± 10.0

78.3 ± 10.5

−5.6 ± 6.3*

− 3.0 ± 3.2*

SctO2 (%)

77.5 ± 6.2

79.9 ± 7.9

80.1 ± 8.0

2.0 ± 6.3

0.2 ± 2.7

  1. SstO2-distal = SstO2 distal to the tourniquet; SstO2-prox = SstO2 proximal to the tourniquet; SstO2-contra = SstO2 on the contralateral leg; T0 = immediately before tourniquet insufflation; Tend = immediately before tourniquet deflation; Tpost = 3–5 min after tourniquet deflation
  2. *P < 0.001
  3. apaired Student's t-test between Tpost and T0
  4. bpaired Student's t-test between Tpost and Tend
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BMC Anesthesiology

ISSN: 1471-2253

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