“…The recommended duration for infusion of anaesthetic local in continuous peripheral nerve blokade are not weel defined in litterature, must not exceed 48h–72h, depending on the patient's comorbidities, extreme age, renal faillure, hepatic faillure, low cardiac agitation, increased risk of local anesthetic toxicity due to alteration of absorption and elimination and therefore the concentration of A.L can remain high in the circolation for longer periods [11–16]. Our experience also confirms that this procedure has the merit of having good results not only in the short term, but also in the long term [15], while also helping to prevent post herpetic neuralgia ( PHN).…”