• Reg Anesth Pain Med · May 2005

    Randomized Controlled Trial Comparative Study Clinical Trial

    Medial canthus single-injection peribulbar anesthesia: a prospective randomized comparison with classic double-injection peribulbar anesthesia.

    • Stéphane Deruddre and Dan Benhamou.
    • Department of Anesthesiology and Intensive Care Medicine, CHU de Bicêtre, Le Kremlin-Bicetre, France.
    • Reg Anesth Pain Med. 2005 May 1; 30 (3): 255-9.

    Background And ObjectivesThe authors report the first prospective randomized comparison of the medial canthus single-injection peribulbar anesthesia (also called caruncular anesthesia) with the classic double-injection peribulbar technique.MethodsOne hundred patients scheduled for cataract surgery were randomly assigned to either a single medial canthus injection or a double peribulbar injection of mepivacaine 2%. The amount of anesthetic agent injected was clinically adapted to each patient. Akinesia, volume injected, pain, reinjections, and complications were assessed after the procedure.ResultsThe medial canthus single-injection peribulbar anesthesia was significantly less painful and required less anesthetic agent than the double-injection peribulbar anesthesia. Akinesia score and the reinjection rate were similar in the 2 groups, whereas chemosis was significantly more frequent in the double-injection group.ConclusionsMedial canthus single-injection peribulbar anesthesia appears to be an effective alternative to the usual double-injection peribulbar anesthesia.

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