Your patient was outdoors and developed hypothermia.
You know that independent nursing interventions would include:

Heat stroke is a serious condition caused by overheating of the body, usually as a result of prolonged exposure to or physical exertion in high temperatures. It can damage the brain and other internal organs, and can be fatal if not treated promptly.

Some of the symptoms of heat stroke are:

• High body temperature of 104 F (40 C) or higher

• Altered mental state or behavior, such as confusion, agitation, slurred speech, seizures or coma

• Lack of sweating despite the heat

• Red, hot and dry skin

• Rapid and strong pulse

• Throbbing headach

• Nausea and vomiting

Choice B is wrong because it is necessary to call 911 if someone has heat stroke. Heat stroke is a medical emergency that requires immediate attention and cooling of the body.

Choice C is wrong because it is not normal to vomit and not sweat during a marathon. Vomiting and lack of sweating are signs of dehydration and heat stroke, which indicate that the body is unable to regulate its temperature properly.

Choice D is wrong because getting the patient to a cooler, air-conditioned place will not reverse the heat exhaustion.

Heat exhaustion is a milder form of heat-related illness that can lead to heat stroke if not treated. Heat exhaustion symptoms include heavy sweating, weakness, dizziness, nausea and muscle cramps. Getting the patient to a cooler place may help with heat exhaustion, but heat stroke requires more aggressive cooling measures such as immersing the patient in cold water or applying ice packs to the body.

Replacing wet clothing with dry clothing is an independent nursing intervention that can help prevent further heat loss and gradually warm the patient. Soaking extremities in hot water (choice A) is not recommended because it can cause vasodilation and hypotension. Administering warmed intravenous fluids (choice B) and administering hot whirlpool therapy (choice C) are not independent nursing interventions because they require a physician’s order. They are also not appropriate for mild to moderate hypothermia because they can cause rapid rewarming and cardiac dysrhythmias.