Nokea
A woman is sitting in a corner of the clinical waiting room, crying audibly. The nurse asks, "What's wrong? Can I help?" The woman responds, "They just told me I have a positive mammogram and I need to see my doctor for follow-up tests. I know I'm going to die of cancer. How can I tell my family?" Which of the following information does the nurse need to know in order to help the woman cope with this finding?
- A. The negative predictive value of mammography
- B. The positive predictive value of mammography
- C. The reliability of mammography
- D. The validity of mammography
Correct Answer: A
Rationale: The correct answer is A: The negative predictive value of mammography. The nurse needs this information to help the woman cope because it indicates the probability that a negative mammogram truly indicates the absence of breast cancer. Knowing this value can provide reassurance to the woman that a positive mammogram doesn't definitively mean she has cancer. The other choices are incorrect because: B (Positive predictive value) focuses on the likelihood of cancer if the test is positive, which may increase the woman's anxiety. C (Reliability) refers to the consistency of results, but it doesn't directly address the woman's concerns about her health. D (Validity) assesses how well a test measures what it is supposed to measure, but it doesn't offer immediate reassurance to the woman in this emotional moment.
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Which of the following is responsible for the dramatic increase in life expectancy during the twentieth century?
- A. Technology increases in the field of medical laboratory research
- B. Advances in surgical techniques and procedures
- C. Sanitation and other public health activities
- D. Use of antibiotics to fight infections
Correct Answer: C
Rationale: The correct answer is C: Sanitation and other public health activities. Sanitation improvements, such as clean water supply and waste disposal, have played a significant role in reducing infectious diseases and improving overall health, leading to the dramatic increase in life expectancy during the twentieth century. This is supported by historical data showing a correlation between improved sanitation and decreased mortality rates. Other choices are incorrect because while technology, surgical advances, and antibiotics have contributed to medical progress, they alone cannot account for the significant increase in life expectancy seen during the twentieth century.
Statistics clearly demonstrate that there are significantly more cases of a disease in one particular neighborhood than in all the rest of the city. Assuming all else is the same, which of the following is the most likely explanation for a single neighborhood having such a different pattern of illness?
- A. A cultural or ethnic concentration in the neighborhood
- B. The geographical location of the neighborhood within the city
- C. A statistical fluke without meaning
- D. The time of year the different statistics were collected throughout the city
Correct Answer: A
Rationale: The correct answer is A, a cultural or ethnic concentration in the neighborhood. This is the most likely explanation because cultural and ethnic factors can impact health outcomes due to differences in lifestyle, diet, access to healthcare, genetic predispositions, and social determinants of health. This can lead to higher rates of certain diseases within specific cultural or ethnic groups living in the same neighborhood.
Choice B, the geographical location of the neighborhood within the city, is less likely to be the primary reason for the disparity in disease cases as the question states that all other factors are the same.
Choice C, a statistical fluke without meaning, is unlikely as statistical significance indicates a real pattern rather than random chance.
Choice D, the time of year the different statistics were collected throughout the city, is also less plausible as the question specifies that all else is the same, implying that the time of data collection is consistent across the city.
Statistics clearly demonstrate that there are significantly more cases of a disease in one particular
- A. A cultural or ethnic concentration in the neighborhood
- B. The geographical location of the neighborhood within the city
- C. A statistical fluke without meaning
- D. The time of year the different statistics were collected throughout the city
Correct Answer: A
Rationale: The correct answer is A: A cultural or ethnic concentration in the neighborhood. This is because cultural or ethnic factors can influence health behaviors, access to healthcare, genetic predispositions, and environmental exposures, all of which can impact disease prevalence. Geographical location (B) may play a role in some cases but is not as directly linked to disease patterns as cultural factors. Choice C suggests randomness, which is unlikely given the clear statistical demonstration mentioned in the question. The time of year (D) is not a significant factor unless it is directly related to cultural or ethnic practices affecting disease spread.
Which of the following statements describes how nursing in the community is more challenging than nursing in an acute care setting?
- A. There is limited access to information useful to the nurse in giving care in the community.
- B. More paperwork and forms are required when giving care in the home.
- C. It is more challenging to control the environment in the community.
- D. Specialization isn't possible in the community setting.
Correct Answer: A
Rationale: The correct answer is A because limited access to information in the community setting hinders the nurse's ability to provide comprehensive care. In acute care settings, information such as patient history, lab results, and vital signs are readily available. In the community, nurses may have to rely on incomplete records or lack real-time data. This impacts treatment decisions and coordination with other healthcare providers. Choice B is incorrect as paperwork is a common challenge in both settings. Choice C is incorrect because controlling the environment in the community is different but not necessarily more challenging. Choice D is incorrect as specialization can still occur in the community through advanced training and collaboration.
Persons in an auditorium may have been exposed to a disease. If they are infected, it is crucial that they receive immediate treatment and not take the disease home to their families. Which of the following characteristics would be most important to consider when selecting the screening test to be used?
- A. The negative predictive value
- B. The positive predictive value
- C. The sensitivity of the test
- D. The specificity of the test
Correct Answer: C
Rationale: The correct answer is C: The sensitivity of the test. Sensitivity measures the ability of a test to correctly identify individuals who have the disease (true positives). In this scenario, selecting a screening test with high sensitivity is crucial to ensure that infected individuals are accurately identified and receive immediate treatment to prevent spreading the disease to their families.
A: The negative predictive value - This measures the probability that individuals with a negative test result truly do not have the disease and is not as important in this case where immediate treatment is vital.
B: The positive predictive value - This measures the probability that individuals with a positive test result truly have the disease and is not as critical as sensitivity in this context.
D: The specificity of the test - This measures the ability of a test to correctly identify individuals who do not have the disease (true negatives) and is not the most important consideration when the goal is to identify infected individuals for immediate treatment.