Reposted from @diversalertnetwork - Emergency oxygen is the first line of treatment for DCS and AGE. Being able to provide this emergency oxygen at concentrations nearing 100 percent can reduce damage to oxygen deprived tissues and make a dramatic difference in an injured diver’s condition. It can also improve their response to further medical treatment.
Administering ventilations with a oronasal resuscitation mask (1 rescuer) or a bag valve mask (2 rescuers) will provide a perfectly acceptable concentration of oxygen to an injured diver, but using a Manually Triggered Ventilator (MTV) enables you to deliver even higher concentrations of oxygen (nearly 100 percent!!). This allows you to be extremely efficient with your O2. An MTV also functions as a demand valve that an injured diver can draw from if they are conscious and breathing. You can opt for an MTV on any DAN Oxygen Kit.
Proper training is required to administer oxygen. Dive professionals are required to have this training but it is important for every diver, especially those who dive independently from charters or dive operators, to know how to administer emergency oxygen. If you still need to learn, take the DAN Emergency Oxygen for Scuba Diving Injuries Course. Click here to find an instructor near you to contact for course information https://www.diversalertnetwork.org/training/directory/