• J Formos Med Assoc · Sep 2005

    Randomized Controlled Trial

    Effect of local anesthetic concentration on the anesthetic level in digital transthecal block.

    • Chun-Sheng Wu and Sheng-Mou Hou.
    • Department of Orthopedic Surgery, Taipei City Hospital, Zhongxiao Branch, Taipei, Taiwan.
    • J Formos Med Assoc. 2005 Sep 1; 104 (9): 684-6.

    AbstractTransthecal digital block is an effective anesthesia. The purpose of this study was to analyze the effect of different anesthetic concentrations on the anesthetic level of transthecal block. From July 2003 to August 2003, 17 patients with trigger finger received local anesthesia by transthecal digital block. The patients were randomized to receive either 1 mL 1% lidocaine and 0.5 mL betamethasone (7 mg/mL), or 1 mL 2% lidocaine and 0.5 mL betamethasone. Anesthetic intensity was checked over different aspects of digits. The 2% lidocaine group showed significantly better pain scores over the dorsal aspect of the digits (p = 0.002). The most effective anesthesia was in the volar aspect of the digits. Anesthesia was least effective in the dorsum of the digit at the lower anesthetic dose.

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