Table 2. Summary of the different effects of the three blocks on pain.
| Blocks | Lidocaine 1 (n = 24) |
Lidocaine 2# (n = 24) |
Lidocaine 1+2 (n = 48) | Saline (n = 24) |
Total (n = 72) |
|---|---|---|---|---|---|
| No effect | 7 (29) | 9 (38) | 16 (33) | 9 (38) | 25 (35) |
| Relief for several hours | 7 (29) | 5 (21 | 12 (25) | 0 | 12 (17) |
| Relief for days or permanent | 9 (38) | 5 (21) | 14 (29) | 7 (29) | 21 (29) |
| Any relief | 16 (66) | 10 (42) | 26 (54)* | 7 (29) | 33 (46) |
| Increase for hours or days | 1 (4) | 5 (21) | 6 (13) | 8 (33) | 14 (19) |
Percentages are between brackets.
# The effect of the second lidocaine block was similar to the first in 16/24 (66%).
* Pain reduction following both lidocaine blocks was found in 10/24 (42%) of the patients.