Background: Although lidocaine is widely used in dermatologic surgery, no formal standard concentration is established. Previous research indicates that more dilute concentrations may offer equally effective anesthesia while potentially reducing toxicity risks. In addition, diluting commercially available lidocaine conserves supplies-a significant benefit during periods of lidocaine shortage.
Objective: To evaluate the efficacy of 0.25% lidocaine compared with that of 0.5% lidocaine in achieving anesthesia in cutaneous surgery.
Materials And Methods: A prospective, double-blind study with 100 patients undergoing cutaneous surgery (Mohs surgery or excision) randomized to receive either 0.25% or 0.5% lidocaine for their percutaneous anesthesia. Patients completed a postoperative survey assessing pain level, satisfaction, and willingness to undergo future dermatologic surgery.
Results: This study revealed no statistically significant differences between the 0.25% and 0.5% lidocaine groups regarding pain scores, patient satisfaction, total lidocaine volume, rescue lidocaine volume, or willingness to undergo the procedure again.
Conclusion: 0.25% lidocaine is a safe and effective option for achieving anesthesia during Mohs surgery and standard excisions. The results suggest that 0.25% lidocaine can be used to optimize high-value care and enhance patient safety in dermatologic surgery.
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