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Laser assisted delivery of topical anesthesia for intramuscular needle insertion in adults
Author(s) -
Shapiro Howard,
Harris Lisbeth,
Hetzel Fred W.,
BarOr David
Publication year - 2002
Publication title -
lasers in surgery and medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.888
H-Index - 112
eISSN - 1096-9101
pISSN - 0196-8092
DOI - 10.1002/lsm.10101
Subject(s) - lidocaine , medicine , anesthesia , placebo , local anesthesia , local anesthetic , topical anesthetic , stratum corneum , surgery , ablation , alternative medicine , pathology
Background and Objectives Currently there is no safe, effective, and rapid means to eliminate the pain associated with a needle insertion through the skin. It is hypothesized that ablation of the stratum corneum layer using a low energy Erbium(Er):YAG laser would allow rapid local anesthesia from a lidocaine product. Study Design/Materials and Methods Eighty volunteers participated in a placebo‐controlled, double blind, cross‐over study employing the Norwood–Abbey (Chelsea Heights, Victoria, Australia) laser anesthesia device (LAD) and two lidocaine preparations. Upper‐arm skin ablation was followed by a 5‐minute application of study treatment. Pain scores were registered immediately following a needle insertion. Results Comparing the combined lidocaine preparations to placebo, there was a statistically significant reduction in pain when the LAD was employed ( P < 0.001). The median pain reduction for lidocaine was 51.3% (95% CI = [40.9, 76.1]). Conclusions Use of the low energy Er:YAG LAD device in combination with a 5‐minute application of lidocaine significantly reduced the pain associated with a needle insertion. Lasers Surg. Med. 31:252–256, 2002. © 2002 Wiley‐Liss, Inc.