Re: White M, Maatman T. Comparative Analysis of Effectiveness of Two Local Anesthetic Techniques in Men Undergoing No-Scalpel Vasectomy. (Urology 2007;70: 1187-1189)

摘要

The recent report by White and Maatman comparing jet injection and needle delivery for anesthesia in no-scalpel vasectomy boasted an impressive superiority of the former compared with the latter. Although this is not surprising in my experience,1 there are a number of comments to make regarding this report.In describing their method, the authors stated that they used "2% lidocaine plain with 1:1,000,000 epineph-rine, as recommended by the manufacturer." Li and I wrote the manufacturer's guidelines for the use of this jet injector, and we specifically stated "the filling chamber is filled with approximately 4 mL of anesthetic solution, 2% lidocaine without epinephrine."