Descriptive Assessment of Practice in Anaesthesia : Lidocaine 1% Adrenaline Under in Axillary Block Realization

Axillary block is the good anesthetic technique for upper limb surgery without exceeding a certain total dose injected of Local Anesthetic (AL). The maximal recommended dose of Lidocaine adrenaline in the upper limb is 500 mg. The use of ultrasound helps guiding the locoregional anesthesia, and allows to decrease the AL concentration, thus decreasing the risks. No previous study estimated a concentration of lidocaine lower than 1,5 % to realize upper limb surgery by axillary block. The literature overestimating probably the rate of failure of the locoregional anesthesia under ultrasound-guidance, we suggest to estimate the rate of failure of the axillary block ultrasound-guided with the lidocaine 1 % adrenaline for realizing upper limb surgery in standard practice.