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  • Title: Needle-free powder lidocaine delivery system provides rapid effective analgesia for venipuncture or cannulation pain in children: randomized, double-blind Comparison of Venipuncture and Venous Cannulation Pain After Fast-Onset Needle-Free Powder Lidocaine or Placebo Treatment trial.
    Author: Zempsky WT, Bean-Lijewski J, Kauffman RE, Koh JL, Malviya SV, Rose JB, Richards PT, Gennevois DJ.
    Journal: Pediatrics; 2008 May; 121(5):979-87. PubMed ID: 18450903.
    Abstract:
    OBJECTIVE: The Comparison of Venipuncture and Venous Cannulation Pain After Fast-Onset Needle-Free Powder Lidocaine or Placebo Treatment trial was a randomized, single-dose, double-blind, phase 3 study investigating whether a needle-free powder lidocaine delivery system (a sterile, prefilled, disposable system that delivers lidocaine powder into the epidermis) produces effective local analgesia within 1 to 3 minutes for venipuncture and peripheral venous cannulation procedures in children. METHODS: Pediatric patients (3-18 years of age) were randomly assigned to treatment with the needle-free powder lidocaine delivery system (0.5 mg of lidocaine and 21 +/- 1 bar of pressure; n = 292) or a sham placebo system (n = 287) at the antecubital fossa or the back of the hand 1 to 3 minutes before venipuncture or cannulation. All patients rated the administration comfort of the needle-free systems and the pain of the subsequent venous access procedures with the Wong-Baker Faces Pain Rating Scale (from 0 to 5). Patients 8 to 18 years of age also provided self-reports with a visual analog scale, and parents provided observational visual analog scale scores for their child's venous access pain. Safety also was assessed. RESULTS: Immediately after administration, mean Wong-Baker Faces scale scores were 0.54 and 0.24 in the active system and sham placebo system groups, respectively. After venipuncture or cannulation, mean Wong-Baker Faces scale scores were 1.77 +/- 0.09 and 2.10 +/- 0.09 and mean visual analog scale scores were 22.62 +/- 1.80 mm and 31.97 +/- 1.82 mm in the active system and sham placebo system groups, respectively. Parents' assessments of their child's procedural pain were also lower in the active system group (21.35 +/- 1.43 vs 28.67 +/- 1.66). Treatment-related adverse events were generally mild and resolved without sequelae. Erythema and petechiae were more frequent in the active system group. CONCLUSIONS: The needle-free powder lidocaine delivery system was well tolerated and produced significant analgesia within 1 to 3 minutes.
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