Comparison of traditional anesthesia method and jet injector anesthesia method (MadaJet XL®) for Nexplanon® insertion and removal

Abstract

Background: This study compared a needle-free anesthesia method with traditional local anesthesia for insertion and removal of Nexplanon® long-acting removable contraceptive device. In our clinic, patients often avoid this highly effective form of contraception due to fear of needles. We sought to determine if patients perceived a difference in pain with the injection, anxiety level or pain with the procedure when local anesthesia was given with a needle v/s a needle-free jet injector device. Methods: Patients were randomly assigned to one of two groups: jet injector or needle lidocaine delivery. Outcomes were ease of use, patient anxiety level, painfulness, and efficacy of anesthesia method. Results: Patient pain perception with administration of jet injector lidocaine was statistically lower than traditional needle with no difference in anxiety or ease of use, or efficacy of the anesthesia. Conclusion: The jet injector device is a reasonable alternative to needle injection delivery of anesthesia prior to insertion/removal of Nexplanon® device. Further studies may determine whether this needle-free alternative for administration of local anesthetic would result in more women choosing Nexplanon® as a contraceptive method.