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Brown: Atlas of Regional Anesthesia, 3rd ed., Copyright © 2006 Saunders, An Imprint of Elsevier
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As with all regional block techniques, it is important not to develop a sense of “time pressure” when performing this block. This is especially pertinent to trigeminal ganglion block because doses of 1% lidocaine as small as 0.25 mL have produced unconsciousness when unintentionally injected into the CSF during the block. As this block can be uncomfortable, sufficient time is needed to allow the patient to become comfortable with the approach and for appropriate sedation to occur.

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