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Table 4 Results of ONB in trigeminal neuropathic pain (TNP)

From: Occipital nerve block is effective in craniofacial neuralgias but not in idiopathic persistent facial pain

ID

Sides/mixture/volume

Pre-ONB

Post-ONB 3 days

Tenderness over GON

Intensity (VAS)

Susceptibility to triggers

Hypoesthesia after ONB

% of pre-ONB pain

Intensity (VAS)

Susceptibility to triggers

Duration of improvement (days)

Response (≥50%)

Painful?

Side effects?

TNP1

2× (40 mg L (1%); 4 mg D/5 ml)

Contralateral

3/10

0/10

Right+, left+

100

3/10

0/10

0

+

TNP2

2× (30 mg L; 4 mg D/2.5 ml)

Ipsilateral

5/10

1/10

Right−, left+

40/100a, #

6/10

0/10

0

+

TNP3

2× (40 mg L (1%); 4 mg D/5 ml)

Ipsilateral contralateral

10/10

9/10

Right+, left+

40/100a

8/10

10/10

0

+

TNP4

2× (40 mg L (1%); 4 mg D/5 ml)

None

8/10

8/10

Right+, left+

50

5/10

8/10

12§

+

+

+

TNP5_1

2× (30 mg L; 4 mg D/2.5 ml)

n.a.

10/10

10/10

Right+, left+

<5%

2/10

0/10

3

+

+

TNP5_2

2× (30 mg L; 4 mg D/2.5 ml)

Ipsilateral contralateral

9/10

10/10

Right+, left+

15

2/10

0/10

6

+

TNP6

2× (40 mg L (1%); 4 mg D/5 ml)

Ipsilateral

9/10

5/10

Right+, left+

40#

4/10

0/10

4

+

+

  1. Response was defined as an improvement of at least 50% compared to pre-ONB pain. Sides: 1 indicates unilateral ONB ipsilateral to the side of pain, 2 indicated bilateral ONB
  2. L lidocaine, D dexamethasone, n.a. not available
  3. aAs pain ratings were unchanged after ONB, improvement to 40% was considered implausible and response was consequently rated negative with 100% of pre-ONB pain
  4. #First follow-up after 4 days
  5. §Patient was lost to follow-up after day 12