Intraneural Catheterization of the Sciatic Nerve In Humans: A Pilot Study

Abstract

Intraneural catheterization of the sciatic nerve may be a frequent finding and was not followed by nerve injury under the conditions of our small pilot study.

A Randomized, Observer-Blinded Determination of the Median Effective Volume of Local Anesthetic Required to Anesthetize the Sciatic Nerve in the Popliteal Fossa for Stimulating and Nonstimulating Perineural Catheters

“…Indeed, conventional opacification probably lacks both sensitivity and specificity to assess with accuracy catheter tip location in close vicinity of a nerve. One part of the answer has perhaps been given in a recent study on popliteal stimulating catheters by Rodriguez et al 20 These authors showed very elegantly, using computed tomography, that when a low MIS is obtained during stimulating catheter insertion, the likelihood of an intraneural placement of the popliteal catheter increases. 20 We may then reasonably hypothesize that when using low MIS, some catheters might have been located under the epineurium.…”

“…Among patients of STIM group presenting a successful block with a volume of 4 mL or less (ie, patients 11,13,14,17,18,20,22, and 24 of STIM group), median duration of surgical anesthesia was 225 mins (212Y246 mins).…”

Intraneural hematoma after nerve stimulation-guided femoral block in a patient with factor XI deficiency: case report

“…The recent use of ultrasound for peripheral nerve blocks has shown that accidental intraneural puncture and intraneural injection of local anesthetic is a common feature [11]. This finding also has been confirmed by CT scan with perineural catheters inserted with nerve stimulation guidance [12]. Therefore, needle-induced injury of intraneural vessels is a real possibility that also must be considered.…”

Case report: Neurological deficit associated with intraneural needle placement without injection

“…[1][2][3][4][5][6] Consequently, this has led to the suggestion that injecting small volumes of local anesthetic beneath the epineurium but outside the perineurium is an acceptably safe practice. 9 The report described here was associated with placement of a needle within a peripheral nerve and was associated with new neurological deficit despite the absence of an intraneural injection.…”

“…[1][2][3][4][5][6] This report concerns a case where a venous cannulation needle was placed into a patient's peripheral nerve. The event was associated with severe lancinating pain and subsequent neurological deficit.…”