How long can brachial plexus block anesthesia needle wake up?

Simple brachial plexus block, belongs to the general local anesthesia, the use of local anesthetic. The effect of the block is that one arm cannot feel or move.
But anesthesiologists often use supplementary intravenous anesthetics to put patients to sleep during surgery; At the same time, brachial plexus blocks often do not work well and need to be assisted by intravenous anesthesia.
I don't know if the anesthetic you said didn't wake up, is the patient not awake, or the arm is still numb?
Nerve block anesthesia time, depending on the specific kind of local anesthetic used by the doctor, as well as drug concentration, dose. Anesthesiologists generally use long-acting local anesthetics, the fading of anesthesia takes a long time, and is a gradual recovery process. You're talking about a normal amount of time.