Ultrasound-guided ophthalmic regional anesthesia

Research output: Contribution to journalReview article

5 Citations (Scopus)

Abstract

Purpose of review Needle-based and cannula-based eye blocks are 'blind' techniques prone to rare but serious complications. Ultrasound, an established adjunct for peripheral nerve block, may be beneficial for ophthalmic anesthesia application. The present review details the evolution of ultrasound-guided eye blocks, outlines safety issues, and reviews recent studies and editorial opinions. Recent findings Ultrasound-assisted ophthalmic regional anesthesia allows imaging of key structures such as the globe, orbit, and optic nerve. Recent findings reveal that needle path is not reliably predictable by clinical evaluation. Needle tips are frequently found to be intraconal, extraconal, or transfixed in the muscle cone independent of the intended type of block. In addition, contemporary human and animal studies confirm that real-time observation of local anesthetic spread inside of the muscle cone correlates directly with block success. Summary Ultrasound-guided ophthalmic regional anesthesia is evolving beyond simple visualization of the anatomy. Recent research emphasizes the imprecision of needle tip location without ultrasound and the key role of imaging local anesthetic dispersion. There is ongoing debate in the literature regarding the utility of routine ultrasound for eye blocks.

Original languageEnglish (US)
Pages (from-to)655-661
Number of pages7
JournalCurrent Opinion in Anaesthesiology
Volume29
Issue number6
DOIs
StatePublished - Nov 28 2016

Fingerprint

Conduction Anesthesia
Needles
Local Anesthetics
Muscles
Nerve Block
Orbit
Optic Nerve
Peripheral Nerves
Anatomy
Anesthesia
Observation
Safety
Research

Keywords

  • Extraconal
  • Intraconal
  • Ophthalmic anesthesia
  • Peribulbar
  • Retrobulbar
  • Sub-Tenon's
  • Ultrasound

ASJC Scopus subject areas

  • Anesthesiology and Pain Medicine

Cite this

Ultrasound-guided ophthalmic regional anesthesia. / Gayer, Steven; Palte, Howard.

In: Current Opinion in Anaesthesiology, Vol. 29, No. 6, 28.11.2016, p. 655-661.

Research output: Contribution to journalReview article

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