Allocation: Non-Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Diagnostic
Post-injection pain intensity
The local anesthetic injection before main procedure was performed by one pain physician using a 25-gauge needle and 1 ml of 1% lidocaine to raise a small skin wheel. Before and immediately following the injection, patients were asked to rate injection-specific pain and unpleasantness intensity on a 0 to 10 numerical rating scale (NRS).
1 min after lidocaine anesthetic injection
South Korea: Institutional Review Board