Is lidocaine and adrenal gland mixed anesthesia better? Or?
Lidocaine combined with adrenaline is used in anesthesia because adrenaline can contract local blood vessels, so it can reduce the absorption of anesthetic drugs and prolong anesthesia time. If only 2% lidocaine is used, the anesthetic effect is generally 1~ 1.5 hours, and adrenaline can prolong the anesthetic effect to 2~3 hours. The general ratio of adrenaline is1:200,000.