[Influence of blockades with local anesthetics on the stimulation ability of a nerve by peripheral nerve stimulation. Results of a randomized study].
In the present study we examined the influence of local anesthetics on the ability to stimulate a nerve by means of peripheral nerve stimulation. In 35 patients either 5 ml saline (group 1, n=18) or local anesthetics (group 2, n=17) were injected close to the sciatic nerve in a randomized and double-blind manner. The current needed to stimulate the nerve was measured 30 s and 2 min after injection. The results showed that 30 s and 2 min after injection of local anesthetics there is a strong local anesthetic effect. Therefore nerve damage might occur despite the use of peripheral nerve stimulation. Thus, the multiple injection technique in a close anatomical area has to be considered critically, because anesthetized or partially anesthetized nerves have a lower stimulating ability and could be damaged by a second or third puncture.
Neuburger
M
M
Abteilung für Anästhesie, BG Unfallklinik, Murnau.
Gültlinger
O
O
Ass
B
B
Büttner
J
J
Kaiser
H
H
D000779:Anesthetics, Local / Q000494:pharmacology*; D004311:Double-Blind Method; D004558:Electric Stimulation; D006801:Humans; D009407:Nerve Block; D010525:Peripheral Nerves / Q000187:drug effects*; D012584:Sciatic Nerve / Q000187:drug effects / Q000502:physiology
D000779:Anesthetics, Local
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