What is Local anesthetic
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Local anesthesia drugs are commonly divided into procaine hydrochloride, lidocaine hydrochloride, bupivacaine hydrochloride, ropivacaine hydrochloride, etc. The so-called local anesthesia is to inject local anesthesia into the human body, so that nerve conduction is temporarily blocked, and play an anesthetic role. There are many kinds of local anesthetics, with different onset time, anesthetic effect time and dosage. They are often divided into two categories according to their chemical structure, as follows:
1. Ester local anesthetics: the representative drug is procaine hydrochloride, which has fast acting, poor diffusion and penetration, and short maintenance time. It is generally not used for surface anesthesia, but is often used for local infiltration anesthesia.
2. Amide local anesthetics: representative drugs are lidocaine hydrochloride, with fast acting, strong penetration and precise effect. They are often used for local infiltration anesthesia.
