Final answer:
To assist a shock victim with no visible trauma, elevate their legs above heart level and keep them warm, ensuring CPR is only used when the heart stops.
Step-by-step explanation:
When there are no signs of trauma and a victim is experiencing shock, the shock position is recommended to improve blood flow, especially to vital organs like the brain. This position involves laying the victim on their back, elevating their legs about 12 to 18 inches above the heart level, which can be done with items like a backpack or rolled-up clothing. Keeping the victim warm and calm is also important as part of the treatment for hypovolemic shock. It is crucial to understand that CPR, which includes chest compressions and possible artificial respiration, should only be performed if the victim's heart has stopped beating. Proper hand placement for CPR is critical, and the sternum should be compressed between the T4 and T9 vertebrae as per the recommended technique.