title: Comparison of intraosseous and infiltration injections for venous lidocaine blood concentrations and heart rate changes after injection of 2% lidocaine with 1:100,000 epinephrine.
abstract: The purpose of this prospective, randomized study was to compare the venous blood levels of lidocaine and heart rate changes after intraosseous and infiltration injections of 1.8 ml of 2% lidocaine with 1:100,000 epinephrine. Using a crossover design, 20 subjects randomly received an intraosseous and infiltration injection at two separate appointments. The heart rate was measured using a pulse oximeter. Venous blood samples were collected before the injections and at 2, 5, 10, 15, 20, 25, 30, 45, and 60 min after the injections. The blinded plasma samples were analyzed for lidocaine concentrations using high-performance liquid chromatography (HPLC). The intraosseous injection resulted in a statistically significant increase in heart rate, when compared to the infiltration injection, during solution deposition and for 2 min after the injection. The plasma levels of lidocaine were not statistically different for maxillary anterior intraosseous and infiltration injections when using 1.8 ml of 2% lidocaine with 1:100,000 epinephrine.
authors.affiliation: Department of Endodontics, The Ohio State University, Columbus, OH, USA.
authors.forename: Mark
authors.initials: M
authors.lastname: Wood
authors.forename: Al
authors.initials: A
authors.lastname: Reader
authors.forename: John
authors.initials: J
authors.lastname: Nusstein
authors.forename: Mike
authors.initials: M
authors.lastname: Beck
authors.forename: David
authors.initials: D
authors.lastname: Padgett
authors.forename: Joel
authors.initials: J
authors.lastname: Weaver
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D000766:Anesthesia, Dental / Q000379:methods*; D000772:Anesthesia, Local / Q000379:methods*; D000779:Anesthetics, Local / Q000008:administration & dosage / Q000097:blood* / Q000494:pharmacology; D001842:Bone and Bones; D002851:Chromatography, High Pressure Liquid; D018592:Cross-Over Studies; D004837:Epinephrine / Q000008:administration & dosage / Q000494:pharmacology; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D007267:Injections; D008012:Lidocaine / Q000008:administration & dosage / Q000097:blood* / Q000494:pharmacology; D011446:Prospective Studies
chemical_list: D000779:Anesthetics, Local; D008012:Lidocaine; D004837:Epinephrine