Why is epinephrine a common additive in injectable anesthetics?

Explanation:

The addition of epinephrine at 1:100,000 to 200,000 (5 to 10 μg per mL) is useful to prolong the duration of anesthesia and provide some degree of hemostasis. when working on highly vascular tissues such as the scalp, the physician may need to wait between injection and surgery.

                                                        water

a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.

                                                        halon  

any of a number of unreactive gaseous compounds of carbon with bromine and other halogens, used in fire extinguishers, but now known to damage the ozone layer.

                                                  dry chemical

extinguishing agent used on class a, class b, and class c fires.

                                                  carbon dioxide

a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. it is naturally present in air (about 0.03 percent) and is absorbed by plants in photosynthesis.