PMC5529603_01
Anteroposterior fluoroscopic image of contrast injected through the first epidural catheter which was placed showing spread only to right-sided nerve roots.
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Then 2 mL of injected contrast showed spread along the right L5 and S1 nerve roots. There was no contralateral spread seen (Figure 1) and therefore the decision was made to inject a test dose of 6 mL of bupivacaine 0.25%.
Anteroposterior fluoroscopic image of contrast injected through the second epidural catheter which was placed on the left side of the epidural space showing spread only to the left-sided nerve roots.
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Then 2 mL of contrast was again injected through this catheter after placement, and it showed spread only along the left L5 and S1 nerve roots (Figure 2).