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A randomised controlled trial of periconal eye blockade with or without ultrasound guidance
I E Najman1, R Meirelles, L B Ramos
1Department of Anaesthesiology, Botucatu School of Medicine, UNESP, São Paulo, Brazil; Benjamin Constant Institute for the Blind, Rio de Janeiro, Brazil.
Anaesthesia
|January 23, 2015
Abstract:
We randomly allocated 129 participants with normal eyes to periconal blockade with (n = 69) or without (n = 60) ultrasound guidance before cataract surgery. There was no difference in the rates of complication, 1/69 and 0/60, respectively, p = 1.0. The rate of intraconal needle placement was 1/69 with ultrasound and 12/60 without ultrasound, a relative risk (95% CI) of 0.07 (0.01-0.55), p < 0.0001.
