Is Near-Infrared Spectroscopy a Reliable Method to Evaluate Clamping Ischemia during Carotid Surgery?

Table 2

Characteristics of patients with TIAs at awakening.

N

Age

carotid lesion

Bain CT

Preop. symptoms

Stump press.

RSO2

Shunt

20

Time > 25

No.

Omo

Ctr

mmHg

T0

C1

Min

Delta (%)

min

Min

1

84

BS

+

−

TIA

50

67

62

49

26.87

ECA

3 + 8 + 6

5

2

66

MS

−

−

Asympt.

25

40

27

27

32.50

Yes

3 + 3

3 + 2

3

74

BS

+

+

mStroke

82

45

35

28

37.78

NF

2 + 1

2 + 1

MS: monolateral stenosis, BS: bilateral stenosis, omo: omolateral brain, ctc: contralateral brain CT, ECA: shunt inserted in external carotid artery for technical reason, NF: not functioning, time: time length delta-RSO₂ >20%/25% recorded consecutively in two or more steps of the operation.