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Hyaluronidase and peribulbar block

G A Dempsey1, P J Barrett, I J Kirby

  • 1Aintree Hospitals NHS Trust, Liverpool.

British Journal of Anaesthesia
|June 1, 1997
PubMed
Summary
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Hyaluronidase improved peribulbar block quality for intraocular surgery. Higher concentrations enhanced onset speed, offering better anesthesia for patients undergoing eye procedures.

Area of Science:

  • Anesthesiology
  • Ophthalmology

Background:

  • Peribulbar block is a common anesthesia technique for intraocular surgery.
  • Optimizing peribulbar block quality and onset is crucial for patient outcomes.

Purpose of the Study:

  • To assess the effect of two hyaluronidase concentrations on peribulbar block quality.
  • To evaluate the impact of hyaluronidase on the onset and success rate of peribulbar blocks.

Main Methods:

  • A randomized study of 200 patients undergoing elective intraocular surgery.
  • Three groups received peribulbar blocks: control, hyaluronidase 50 iu ml-1, and hyaluronidase 300 iu ml-1.
  • Ocular motility was assessed as the primary outcome measure for block success.

Main Results:

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  • Hyaluronidase significantly improved peribulbar block quality at 5 minutes in both concentrations.
  • The 300 iu ml-1 concentration demonstrated a significantly faster onset of block at 1 minute.
  • Both hyaluronidase groups showed an increased incidence of satisfactory block at 5 minutes.

    • Conclusions:

    • Hyaluronidase enhances the quality and speed of peribulbar block onset.
    • The addition of hyaluronidase is beneficial for peribulbar anesthesia in intraocular surgery.
    • A concentration of 300 iu ml-1 offers superior onset speed compared to 50 iu ml-1.