Entonox is a mixture of two gases: nitrous oxide (N2O) and oxygen (O2).
Head Injuries was created in 1979-07.
Head injuries has know specific founder ( trust me I have searched for hours)
A hit to the head
Forceful or sudden movements are contraindicated during assisted stretches, as they can lead to muscle strains or other injuries. Similarly, excessive weight bearing should be avoided, especially with pre-existing joint issues or injuries, to prevent exacerbating the condition.
They are locally contraindicated if not severe and systemically contraindicated if they are severe.
Head injuries
There are five injuries that are extremely common in the NFL. These are injuries to the knee, shoulder, leg, ankle, and head. Head injuries frequently include concussions.
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Yes it is contraindicated
Some of the most common football injuries are to the hands, head, legs and back. When you catch a ball you may not do it properly, causing injuries to your hands. Head and back injuries can come from tackles, as well as some leg injuries.
I.J Swann has written: 'Management of minor head injuries' -- subject(s): Head, Wounds and injuries