Abstract
[Background and purpose] We experienced a novel anesthetic method using 2.8% lidocaine solution for infusion through the nasal cavity (hereafter “infusion anesthesia”), and studied its clinical utility.
[Subjects and method] From January to June 2008, 281 patients underwent transnasal endoscopy with infusion anesthesia and were evaluated according to four items of subject tolerance using a questionnaire conducted after the examination.
[Results] The percentage of cases who felt discomfort in the overall examination was 3.7% ; 8.2% felt nasal discomfort at insertion ; 9.3% felt pharyngeal discomfort at insertion and 6.7% felt discomfort by anesthesia itself.
[Conclusion] The subject tolerance with the infusion anesthesia was good, and it enabled a simple procedure with low incidence pain for the patients.
