Abstract 16


International Journal of 'sthetic and Restorative Surgery, 1:9-12, 1993.

Iontophoretic Anesthesia in Hair Transplantation

C.J. Puig, DO, R.J. H'nschen, DO, D.M. Clark, RN, T.L. Iwahiro, RN, and R.L. Stephen, MD
Puig Medical Group, Rosemont, Illinois and
Department of Surgery, University of Utah, Salt Lake City, Utah
ABSTRACT

This study assesses the effectiveness, safety, and convenience of iontophoretic local anesthesia in reducing pain associated with injections into the scalp, and compares its effectiveness with 50% nitrous oxide as a preinjection analgesia for the scalp. Sixty patients were categorized in two groups of 30. Group I received infiltrative anesthesia with 1% or 2% lidocaine and 1:100,000 epinephrine with and without previous lidocaine with epinephrine iontophoresis. Group II received infiltrative anesthesia after lidocaine with epinephrine iontophoresis and compared it with inhaling nitrous oxide 50%. Pain scores were recorded by the patients using a three-point rating scale (Group I) and included fractional score (Group II). When pain ratings for like zones were averaged, in Group I, twenty-four patients (80%) experienced no or moderate pain in iontophoretic zones and nine (30%) in control zones (p<0,001). In Group II, the number of patients with nor or less-than-moderate pain was 25 (83%) in iontophoretic zones, eight (27%) in control zones and 10 (33%) in nitrous oxide zones (p<0.001). Iontophoresis of 4% lidocaine plus1:50,000 epinephrine is effective as a local anesthetic for reducing the pain associated with injections into the scalp and is superior to nitrous oxide 50%.
DISCUSSION

?Iontophoresis of 4% lidocaine plus 1:50,000 epinephrine is effective as a local anesthetic for reducing the pain associated with injections into the scalp.

?Side effects and complications associated with the iontophoretic technique are minimal, and appear to be related to the total electric charge administered.

?The local anesthesia has good potential; it provides a method of painlessly administering infiltrative anesthesia to surgical sites.




Live Chat Software
*MARKER* 0