Some one earlier mentioned that you should not use a tourniquet or even to carry one. I could not DISAGREE more. TQs have gotten a bad name through the years and during that time TQs were extremely avoided and for good reason. However, in today's world with today's equipment, a TQ should to the first thing to grab in cases of extreme bleeding. According to TCCC a TQ can stay on untouched for two hours with no risk of tissue and nerve damage. A recient TCCC study found that TQ such as the CAT, have been left on much longer. If the rumor mill is correct, then they are talking about make a 8-12 hour use standard.
Why did TQs get bad names. Well, because they sucked. Not any simpler then that. Back in the ye olden days there really were almost no products factory made for the purpose. Remember being taught to use a belt, bandanna, scarf, electrical cord and many other make shift materials.
Now for a TQ to work it has to be extremely tight. They are also very painful is done properly. So they would take a belt or cordage and wrap it super tight proximal to the wound. The TQ damage is pretty well complete in a few minutes. What medical research found was that it was not the time that the TQ was on the body. It was however discovered that the damage was caused by the make shift TQ being too thin. It was actually causing crushing wounds to the arteries and nerve fibers. That is damage that can not be healed up with out taking off the whole limb. Because today's CATs TQs are very wide there do not pose that risk.
You still only want to put one on in the case of hemorrhage that is life threatening. So will tell you to try to stop the bleeding with pressure before switching to the TQ. The problem with that is when you have arterial spurting you will not be able to stop it with pressure before someone dies of blood loss. You do need the training to look at a wound and decide right then whether a TQ is going to be needed. For the best outcome it needs to be used without delay.
BTW. TCCC is the militry guidelines for combat trauma care. It is still widely used in the civilian world.
Why did TQs get bad names. Well, because they sucked. Not any simpler then that. Back in the ye olden days there really were almost no products factory made for the purpose. Remember being taught to use a belt, bandanna, scarf, electrical cord and many other make shift materials.
Now for a TQ to work it has to be extremely tight. They are also very painful is done properly. So they would take a belt or cordage and wrap it super tight proximal to the wound. The TQ damage is pretty well complete in a few minutes. What medical research found was that it was not the time that the TQ was on the body. It was however discovered that the damage was caused by the make shift TQ being too thin. It was actually causing crushing wounds to the arteries and nerve fibers. That is damage that can not be healed up with out taking off the whole limb. Because today's CATs TQs are very wide there do not pose that risk.
You still only want to put one on in the case of hemorrhage that is life threatening. So will tell you to try to stop the bleeding with pressure before switching to the TQ. The problem with that is when you have arterial spurting you will not be able to stop it with pressure before someone dies of blood loss. You do need the training to look at a wound and decide right then whether a TQ is going to be needed. For the best outcome it needs to be used without delay.
BTW. TCCC is the militry guidelines for combat trauma care. It is still widely used in the civilian world.