A nurse is preparing an in-service presentation about preventing health care associated infections (HAIs).
The nurse should include which of the following as a common cause of these infections?

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.

One of the highest levels of evidence are randomized, controlled, double-blind studies. This is because these studies reduce the risk of bias and confounding factors by randomly assigning participants to intervention or control groups, blinding the participants and researchers to the group allocation, and using a placebo or standard treatment as a comparison.

Choice B is wrong because ideas, editorials, and opinions are considered low levels of evidence as they are based on personal views and not on rigorous research methods.

Choice C is wrong because the purpose of the hierarchy of evidence is to help the nurse evaluate the quality and strength of the research findings, not to compare patient values with research findings.

Patient values are important for evidence-based practice, but they are not part of the hierarchy of evidence.

Choice D is wrong because all forms of evidence should not be considered equally when determining evidence-based practice. The hierarchy of evidence ranks different types of research designs according to their validity and applicability, and the nurse should use the highest level of evidence available for their clinical question.