Dive_Man_ChangeA

18-4 Change A U.S. Navy Diving Manual—Volume 4 18-2.1.5 Treatment of Nonconvulsive Symptoms. The stricken diver should alert his dive buddy and make a controlled ascent to the surface. The victim’s life preserver should be inflated (if necessary) with the dive buddy watching him closely for progression of symptoms. 18-2.1.6 Treatment of Underwater Convulsion. The following steps should be taken when treating a convulsing diver: 1. Assume a position behind the convulsing diver. The weight belt should be left in place to prevent the diver from assuming a face down position on the surface. Release the victim’s weight belt only if progress to the surface is significantly impeded. 2. Leave the victim’s mouthpiece in his mouth. If it is not in his mouth, do not attempt to replace it; however, if time permits, ensure that the mouthpiece is switched to the SURFACE position. 3. Grasp the victim around his chest above the UBA or between the UBA and his body. If difficulty is encountered in gaining control of the victim in this manner, the rescuer should use the best method possible to obtain control. The UBA waist or neck strap may be grasped if necessary. 4. Make a controlled ascent to the surface, maintaining a slight pressure on the diver’s chest to assist exhalation. 5. If additional buoyancy is required, activate the victim’s life jacket. The rescuer should not release his own weight belt or inflate his own life jacket. 6. Upon reaching the surface, inflate the victim’s life jacket if not previously done. 7. Remove the victim’s mouthpiece and switch the valve to SURFACE to prevent the possibility of the rig flooding and weighing down the victim. 8. Signal for emergency pickup. 9. Once the convulsion has subsided, open the victim’s airway by tilting his head back slightly. 10. Ensure the victim is breathing. Mouth-to-mouth breathing may be initiated if necessary. 11. If an upward excursion occurred during the actual convulsion, transport to the nearest chamber and have the victim evaluated by an individual trained to recognize and treat diving-related illness. 18-2.2 Oxygen Deficiency (Hypoxia). Oxygen deficiency, or hypoxia, is the condition in which the partial pressure of oxygen is too low to meet the metabolic needs of the body. Chapter 3 contains an in-depth description of this disorder. In the context of