A community health nurse is preparing an in-service for staff to define the conditions of causation in epidemiology studies. Which of the following descriptions should the nurse use to define a cessation of exposure to establish causation?
"When the exposure is decreased or eliminated, the risk of disease declines or is eliminated."
"The exposure must come before the disease develops.
"A relationship is biologically possible, and it makes sense."
"Increased exposure increases the risk of developing the disease."
The Correct Answer is A
Choice A: "When the Exposure is Decreased or Eliminated, the Risk of Disease Declines or is Eliminated."
This statement accurately describes the concept of cessation of exposure in establishing causation. According to the Bradford Hill criteria, if a factor is truly causal, reducing or eliminating exposure to that factor should lead to a decrease in the incidence of the disease. This principle helps to confirm the causal relationship between the exposure and the disease.
Choice B: "The Exposure Must Come Before the Disease Develops."
This statement refers to the temporal relationship criterion in the Bradford Hill criteria, which states that for an exposure to be considered causal, it must precede the onset of the disease. While this is an important aspect of establishing causation, it does not specifically address the concept of cessation of exposure.
Choice C: "A Relationship is Biologically Possible, and it Makes Sense."
This statement pertains to the biological plausibility criterion, which suggests that the observed association between an exposure and a disease should be consistent with existing biological and medical knowledge. While biological plausibility is crucial for establishing causation, it does not directly relate to the cessation of exposure.
Choice D: "Increased Exposure Increases the Risk of Developing the Disease."
This statement describes the dose-response relationship, another criterion in the Bradford Hill framework. It indicates that a greater level of exposure to a risk factor should correspond to a higher risk of developing the disease. Although this is an important aspect of causation, it does not specifically address the cessation of exposure.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A Reason:
Autonomy refers to respecting an individual's right to make their own decisions. In the context of healthcare, it means allowing patients to make informed choices about their own care. While autonomy is an important ethical principle, it is not the primary focus when considering the balance of benefits and harms in a community-wide intervention.
Choice B Reason:
Beneficence is the ethical principle that involves acting in the best interest of others by promoting good and preventing harm. In this scenario, the nurse demonstrates beneficence by ensuring that the benefits of the physical activity program substantially outweigh any potential harms. This principle is central to public health initiatives, where the goal is to enhance the well-being of the community.
Choice C Reason:
Nonmaleficence is the principle of "do no harm." It emphasizes the importance of not causing harm to others. While nonmaleficence is closely related to beneficence, the focus in this scenario is on the positive impact of the intervention (beneficence) rather than solely avoiding harm (nonmaleficence).
Choice D Reason:
Justice refers to fairness and equality in the distribution of resources and treatment. It ensures that all individuals have equal access to healthcare and that no group is unfairly disadvantaged. Although justice is a crucial ethical principle, the scenario specifically highlights the balance of benefits and harms, which aligns more closely with beneficence.
Correct Answer is A
Explanation
Choice A Reason:
Identifying a support system to prevent the client from giving into the urge to smoke is crucial during the preparation phase of the Transtheoretical Model. In this phase, the client is ready to take action within the next 30 days and may start taking small steps towards quitting smoking. A support system, which can include family, friends, or support groups, provides the necessary encouragement and accountability to help the client stay committed to their goal. This support can significantly increase the chances of successful smoking cessation by offering emotional and practical assistance².
Choice B Reason:
Giving literature to the client who has expressed wanting to quit but is not yet ready to do so aligns more with the contemplation phase of the Transtheoretical Model. In the contemplation phase, individuals are considering quitting within the next six months but are not yet ready to take immediate action. Providing educational materials can help them understand the benefits of quitting and the steps involved, but it is not as relevant for someone in the preparation phase who is already planning to quit soon.
Choice C Reason:
Consoling the client for smoking a cigarette after having quit smoking 4 months ago is more appropriate for the maintenance phase. In the maintenance phase, individuals work to sustain their behavior change and prevent relapse. While offering support after a relapse is important, it does not align with the preparation phase, where the focus is on planning and preparing to quit smoking.
Choice D Reason:
Teaching the client who refuses to quit smoking about fire safety and cigarette smoking is not relevant to the preparation phase. This intervention might be more suitable for individuals in the precontemplation phase, where they are not yet considering quitting and need to be made aware of the risks associated with smoking. In the preparation phase, the client is already motivated to quit, so the focus should be on supporting their efforts to take action.
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