FOR Those of you who watch football matches may have seen incidents of players being injured in the middle of a match. If this is the case, the medical team will usually come in and give you a numbing spray.
This anesthetic is sprayed on the injured part of the body. Spray anesthesia is given to players with the aim of reducing pain from newly sustained injuries.
So how can anesthetic sprays reduce pain from injuries? How does it work? Now, to find the answer, consider the following explanation, compiled from various sources.
It should be noted that the best known and most commonly used anesthetic spray is ethyl chloride or chloroethane. This is an anesthetic refrigerant which, if it hits the skin, will give a cold sensation.
The anesthetic spray evaporates very quickly from the skin after it is sprayed, causing the skin temperature to drop to -4 degrees Fahrenheit (-20 degrees Celsius). This decrease in skin temperature reduces the skin’s sensitivity to pain.
However, spray anesthesia can only provide short-term local anesthesia. Spraying ethyl chloride for 10 seconds on the skin will produce a local anesthetic for about 30 seconds.
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