20 SHEET ACTION TO TAKE ON THE SITE OF THE EVENT Before evacuation: stabilising and preparing the victims Single envelope technique 1. Before entering the controlled zone, cover the stretcher with a sheet of vinyl. 2. Position the stretcher near the victim and place an open vinyl bag on the stretcher. 3. Lift the victim using the conventional techniques and place the victim in the bag, close the bag leaving the head and arms free (infusion, monitoring blood pressure). Double envelope technique A vacuum mattress is required. 1. Before entering the controlled zone, wrap the vacuum mattress in a vinyl sheet. Ideally, use a protective vinyl bag. 2. Position the vacuum mattress near the victim. Place a second vinyl sheet or a second vinyl bag (transport bag) on the vacuum mattress. 3. Lift the victim using the conventional techniques and place them in the transport bag, close the bag leaving the head and arms free (infusion, monitoring blood pressure). 4. Place the vacuum mattress under negative pressure. 5. Cut away the vinyl sheet surrounding the vacuum mattress and leave it on site.. The double envelope technique must be perfectly mastered to avoid losing time. It must never hinder the treatment of an Absolute Emergency (AU). PROTECTION ACCESSORIES • Transport bags for the patients, the vacuum mattresses, the stretchers. • Protective vinyl sheets for the ambulances, walls. • Dust-proof garments of category III, type 5-6, double pair of gloves, respiratory protection (FFP3 mask or, if not available, FFP2 mask) and surgical cap. i Protection bag Vacuum mattress Transport bag Vacuum mattress MEDICAL RESPONSE IN NUCLEAR OR RADIOLOGICAL EMERGENCY 67
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