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AMBULATORY ANESTHESIA

Peribulbar Anesthesia: A Percutaneous Single Injection Technique with a Small Volume of Anesthetic

Leonardo Rizzo, MD^*, Maurizio Marini, MD^*, Chiara Rosati, MD^*, Italo Calamai, MD^*, Michela Nesi, MD^*, Roberto Salvini, MPH, Cinzia Mazzini, MD, Fiamma Campana, MD, and Enzo Brizzi, MD

*Department of Critical Care Medicine and Surgery, Section of Anesthesiology, Department of Epidemiology, Department of Oto-Neuro-Ophthalmological Surgery, Section of Ophthalmology, Department of Pathologic Anatomy, University of Florence, Florence, Italy

Address correspondence and reprint requests to Leonardo Rizzo, MD, Department of Critical Care Medicine and Surgery, Section of Anesthesiology, University of Florence, Viale Morgagni 85, 50134, Florence, Italy. Address email to leonardorizzo{at}inwind.it

We evaluated the efficacy and safety of a single injection technique with a small volume of anesthetic for ocular peribulbar anesthesia. We included 857 patients undergoing various ophthalmic procedures. Anesthesia consisted of a medial percutaneous injection of 5–6.5 mL of 2% lidocaine. At 2 min 85.6% of the patients had a motor block of at least 50% and at 5 min 78.6% had a motor block >80%. After 5 min 100% of the patients had adequate surgical anesthesia. There were no serious block-related complications. The described technique is a simple and satisfactory alternative to the classical techniques

IMPLICATIONS: Potential complications associated with regional anesthesia in ophthalmic surgery led to the proposal of a single, rather than multiple, injection technique of regional anesthesia. The described percutaneous peribulbar medial single injection technique with very small volume of anesthetic is a simple and satisfactory alternative to the classical techniques.

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