A nurse is examining the agent, host and environmental factors which can lead to disease. Which of the following models would the nurse most likely use?
Epidemiologic triangle
Health promotion
Natural history of disease
Levels of prevention
The Correct Answer is A
A. Epidemiologic triangle: The epidemiologic triangle is a public health model that examines three key components of disease transmission:
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Agent – The microorganism (bacteria, virus, fungus, etc.).
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Host – The person or animal that harbors the disease.
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Environment – External conditions that contribute to disease spread.
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B. Health promotion: The health promotion model focuses on behavioral and lifestyle changes to prevent illness rather than examining the direct causes of disease.
C. Natural history of disease: The natural history of disease describes how a disease progresses without intervention from the initial exposure to resolution or chronicity, but it does not specifically analyze the agent, host, and environment.
D. Levels of prevention: The levels of prevention (primary, secondary, tertiary) focus on preventing and managing disease, but they do not analyze the factors leading to disease transmission like the epidemiologic triangle does.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. "Salmonella is a bacterial infection." Salmonella is a gram-negative bacterium that causes foodborne illness.
B. "Salmonella symptoms include headaches, abdominal pain, diarrhea, nausea, vomiting, and fever." These are common symptoms of Salmonella infection, particularly gastroenteritis.
C. "Salmonella may be spread by spores that form once contaminated blood is exposed to the air." Salmonella is a bacterial infection that spreads primarily through contaminated food, water, or direct contact with infected animals. It does not form spores, and exposure to air does not play a role in its transmission.
D. "Salmonella has a 48-hour incubation period." While the incubation period can range from 6 to 72 hours, 48 hours falls within the expected time frame.
Correct Answer is B
Explanation
A. Hepatitis B: Hepatitis B is a bloodborne disease, primarily spread through contact with infected bodily fluids, not through a vector.
B. Rocky Mountain spotted fever: Rocky Mountain spotted fever is a vector-borne disease transmitted by tick bites. Vectors are living organisms, such as mosquitoes or ticks, that carry infectious agents.
C. E. coli O157:H7: E. coli is a foodborne illness that spreads through contaminated food or water, not via a vector.
D. Anthrax: Anthrax is a bacterial infection that spreads through direct contact, ingestion, or inhalation of spores, not through a vector.
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