In a hot environment, what treatment can be administered to a patient with heat exhaustion?

In cases of heat exhaustion, the primary focus of treatment is to replenish lost fluids and cool the body gradually. Administering sips of cool water helps to hydrate the patient, restoring electrolyte balance and aiding in the body's natural cooling process. It is essential to provide fluids slowly, as drinking too quickly can lead to gastrointestinal upset, which may exacerbate the patient’s condition.

Other methods of cooling, while they may seem effective, can pose risks when applied to a person suffering from heat exhaustion. For instance, immediate cooling with ice can lead to hypothermia or shock, as the body's natural response to extreme temperature changes may be harmful. Similarly, high concentration oxygen doesn't address the underlying issue of dehydration or overheating. Using an electric fan can help in cooling but should be combined with hydration strategies, as it could cause further heat stress if not managed properly. Therefore, the best course of action in a hot environment for someone experiencing heat exhaustion is to provide sips of cool water, along with monitoring their condition and ensuring they receive appropriate care.