If yes then your first priority is to place your hand over the wound to stop the air from coming out.
Afterwards dress the wound with a non-stick gauze so that it is air-tight. Tape the patch down on three of the four sides.
Then lift the free side of the patch to let the air out of the pneumonia-thorax in order to prevent a lung collapse. Repeat as is necessary.
Have a helper or yourself alway keep the dressing air-tight.
Transport to hospital.
If you are not sure if a chest wound has penetrated the chest wall completely, treat the wound as though it were an open chest wound.
An Open Chest Wound (Sucking Chest Wound)
the edges of the sealing material for an open chest wound should extend how far past the edge of the wound?
Umm, well if it was an open chest wound..there would be an obvious HOLE/CUT in your chest. you would be able to see it.
pain, blood coming from the chest,
There shouldn't be a knot to tie. The treatment for an open chest wound is to put a piece of plastic over it and tape it down on the sides so that air cannot get in or out of the wound. There's nothing to tie down anywhere in that. You could be thinking of flail chest which has more to do with broken bones then an open chest wound. As an army medic I find your question soul crushingly confusing.
Coughing up blood, sucking or hissing sounds coming from a chest wound, frothy blood appearing from air bubbles coming from the wound
Um, a gaping hole in your chest Blood is a good indicator. A gaping hole in the chest.
coughing up blood sucking or hissing sounds comming from a chest wound frothy blood appering from air bubbles coming form the wound
coughing up blood sucking or hissing sounds comming from a chest wound frothy blood appering from air bubbles coming form the wound
All of the above sabc
Hmmm...difficulty breathing, profuse bleeding from the area where the wound is, and a big hole in the guy's chest that shouldn't be there.