HESI LPN
Community Health HESI Exam
1. Which of the following measures the frequency of new cases of the phenomenon during a given period of time?
- A. prevalence rate
- B. proportionate mortality rate
- C. case fatality rate
- D. incidence rate
Correct answer: D
Rationale: The correct answer is D, incidence rate. Incidence rate measures the frequency of new cases of a phenomenon, providing important information about the risk of developing the condition. Prevalence rate (choice A) reflects both old and new cases, proportionate mortality rate (choice B) is the proportion of deaths due to a specific cause, and case fatality rate (choice C) measures the proportion of deaths among confirmed cases, not just new cases.
2. Which of the following is the most effective way to prevent the spread of communicable diseases in a community?
- A. Regular health check-ups
- B. Isolation of infected individuals
- C. Immunization programs
- D. Public health education
Correct answer: C
Rationale: Immunization programs are the most effective way to prevent the spread of communicable diseases. Vaccinations help build immunity against specific diseases, reducing the likelihood of an outbreak. Regular health check-ups (Choice A) are important for individual health but do not directly prevent the spread of diseases on a community level. Isolation of infected individuals (Choice B) is a containment measure rather than prevention for the entire community. Public health education (Choice D) is valuable in raising awareness but may not be as effective as immunization programs in directly preventing the spread of communicable diseases.
3. To prevent keratitis in an unconscious client, where should the nurse apply moisturizing ointment?
- A. Finger and toenail quicks
- B. Eyes
- C. Perianal area
- D. External ear canals
Correct answer: B
Rationale: The correct answer is B: Eyes. Applying moisturizing ointment to the eyes helps prevent keratitis, a condition that can occur due to inadequate blinking in unconscious clients, leading to corneal dryness and potential damage. Choices A, C, and D are incorrect as moisturizing ointment should not be applied to finger and toenail quicks, perianal area, or external ear canals to prevent keratitis.
4. In reviewing the assessment data of a client suspected of having diabetes insipidus, the nurse expects which of the following after a water deprivation test?
- A. Increased edema and weight gain
- B. Unchanged urine specific gravity
- C. Rapid protein excretion
- D. Decreased blood potassium
Correct answer: B
Rationale: After a water deprivation test in a client suspected of having diabetes insipidus, the nurse would expect the urine specific gravity to remain unchanged. This occurs because in diabetes insipidus, the kidneys are unable to concentrate urine, leading to a low urine specific gravity even after water deprivation. Choices A, C, and D are incorrect. Increased edema and weight gain are not typical findings in diabetes insipidus. Rapid protein excretion is not directly related to the condition, and decreased blood potassium is not a common outcome of a water deprivation test for diabetes insipidus.
5. In order to establish priorities in planning and implementing the occupational health program, which of the following data will the nurse need?
- A. disease trends, birth and death rates, and social environmental conditions
- B. birth and death rates
- C. disease trends
- D. social environmental conditions
Correct answer: A
Rationale: To effectively plan and implement an occupational health program, the nurse needs comprehensive data, including disease trends, birth and death rates, and social environmental conditions. This holistic approach ensures that the program addresses a wide range of health aspects impacting the target population. Option A is the correct choice as it considers multiple factors influencing occupational health. Choices B, C, and D are each individually important but do not provide the breadth of information required to establish priorities in a comprehensive occupational health program.
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