The purpose of the study was to evaluate the lesions produced by direct trauma of injection needles in the peripheral nervous trunks. Two types of needles were compared: one with a tip with a 45 degrees inclination, and one with a tip with a 14 degrees in clination. Sprague Dawley rats were used, the sciatic nerve of which had been subjected to repeated injections under direct vision; the results were collected 7, 14, and 21 days after surgery. Both macroscopic and histological observation revealed that the greatest injury was produced using needles that had a tip with a 14 degrees inclination, that was longer, while needles that had a tip with a 45 degrees inclination had a greater tendency to slip and rotate at every attempt at penetration.
Lesioni nervose come complicazioni neurologiche nei blocchi anestesiologici regionali : un modello sperimentale / G. Macías, F. Razza, G.M. Peretti, I. Papini Zorli. - In: LA CHIRURGIA DEGLI ORGANI DI MOVIMENTO. - ISSN 0009-4749. - 85:3(2000), pp. 265-271.
Lesioni nervose come complicazioni neurologiche nei blocchi anestesiologici regionali : un modello sperimentale
G.M. PerettiPenultimo
;
2000
Abstract
The purpose of the study was to evaluate the lesions produced by direct trauma of injection needles in the peripheral nervous trunks. Two types of needles were compared: one with a tip with a 45 degrees inclination, and one with a tip with a 14 degrees in clination. Sprague Dawley rats were used, the sciatic nerve of which had been subjected to repeated injections under direct vision; the results were collected 7, 14, and 21 days after surgery. Both macroscopic and histological observation revealed that the greatest injury was produced using needles that had a tip with a 14 degrees inclination, that was longer, while needles that had a tip with a 45 degrees inclination had a greater tendency to slip and rotate at every attempt at penetration.Pubblicazioni consigliate
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