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Anesth Analg 2000;91:934-937
© 2000 International Anesthesia Research Society

REGIONAL ANESTHESIA AND PAIN MEDICINE

Hyaluronidase as an Adjuvant in Bupivacaine-Lidocaine Mixture for Retrobulbar/Peribulbar Block

Helena Kallio, MD, Markku Paloheimo, MD, PhD, and Eeva-Liisa Maunuksela, MD, PhD

Department of Anesthesia, Helsinki University Central Hospital, Eye Hospital, Helsinki, Finland

Address correspondence and reprint requests to Helena Kallio, MD, Helsinki University Central Hospital, Helsinki University Eye Hospital, PO Box 220, FIN-00029 Huch, Finland. Address e-mail to helena.kallio{at}hus.fi

Hyaluronidase 7.5 IU/mL added to the local anesthetic improves peribulbar block, but smaller concentrations have not been shown to be effective. In this prospective, double-blinded study, 714 consecutive ocular surgery patients were randomized into three groups: no hyaluronidase (n = 241), hyaluronidase 3.75 IU/mL (n = 244), and hyaluronidase 7.5 IU/mL (n = 229). Retrobulbar/peribulbar block was performed with two injections of a 1:1 mixture of bupivacaine 0.75% and lidocaine 2%, 6–8 mL. Patient data were collected on demographics, initial volume of local anesthetic, need for supplementary block, and akinesia of the anesthetized eye. When hyaluronidase was used (3.75 or 7.5 IU/mL), the initial block was sufficient and the anesthetized eye was akinetic significantly more often than in the group without hyaluronidase. The hyaluronidase groups (3.75 and 7.5 IU/mL) did not differ significantly in any respect. We conclude that the addition of hyaluronidase 3.75 or 7.5 IU/mL improved the success of the initial retrobulbar/peribulbar block and akinesia and reduced the need for supplementary block.

Implications: We conclude that the addition of hyaluronidase 3.75 or 7.5 IU/mL improved the success of the initial retrobulbar/peribulbar block and akinesia and reduced the need for supplementary block.




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Lippincott, Williams & Wilkins Anesthesia & Analgesia® is published for the International Anesthesia Research Society® by Lippincott Williams & Wilkins with the assistance of Stanford University Libraries' HighWire Press®. Copyright 2006 by the International Anesthesia Research Society. Online ISSN: 1526-7598   Print ISSN: 0003-2999 HighWire Press
Copyright © 2000 by the International Anesthesia Research Society.