Concentration of Bupivacaine | % Pain Remaining Postinjection | All | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0% | >0% to <20% | ≥20% to <40% | ≥40% to <60% | ≥60% to <80% | ≥80% to <100% | 100% | ||||||||||
No. Injections | % | No. Injections | % | No. Injections | % | No. Injections | % | No. Injections | % | No. Injections | % | No. Injections | % | No. Injections | % | |
0.25% | ||||||||||||||||
Injection event | ||||||||||||||||
Multiple | 65 | 52.0 | 5 | 4.0 | 12 | 9.6 | 10 | 8.0 | 15 | 12.0 | 4 | 3.2 | 14 | 11.2 | 125 | 100.0 |
Single | 47 | 42.0 | 7 | 6.3 | 8 | 7.1 | 11 | 9.8 | 16 | 14.3 | 4 | 3.6 | 19 | 17.0 | 112 | 100.0 |
All | 112 | 47.3 | 12 | 5.1 | 20 | 8.4 | 21 | 8.9 | 31 | 13.1 | 8 | 3.4 | 33 | 13.9 | 237 | 100.0 |
0.50% | ||||||||||||||||
Injection event | ||||||||||||||||
Multiple | 29 | 42.6 | 5 | 7.4 | 6 | 8.8 | 14 | 20.6 | 8 | 11.8 | 1 | 1.5 | 5 | 7.4 | 68 | 100.0 |
Single | 31 | 35.6 | 8 | 9.2 | 16 | 18.4 | 10 | 11.5 | 9 | 10.3 | 1 | 1.1 | 12 | 13.8 | 87 | 100.0 |
All | 60 | 38.7 | 13 | 8.4 | 22 | 14.2 | 24 | 15.5 | 17 | 11.0 | 2 | 1.3 | 17 | 11.0 | 155 | 100.0 |