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. A young child is admitted for treatment of lead poisoning. The nurse recognizes that the most serious effect of chronic lead poisoning is
- A. Central nervous system damage
- B. Moderate anemia
- C. Renal tubule damage
- D. Growth impairment
Correct answer: A
Rationale: Corrected Rationale: Chronic lead poisoning can lead to severe and irreversible damage to the central nervous system, including cognitive and developmental delays. Central nervous system damage is the most serious effect of chronic lead poisoning because it can have long-lasting consequences on a child's cognitive function and overall development. Moderate anemia (Choice B), renal tubule damage (Choice C), and growth impairment (Choice D) can also occur due to lead poisoning, but they are not as severe or potentially irreversible as the damage to the central nervous system.
3. During a home visit for a family with a new baby, what should the nurse assess first?
- A. feeding patterns
- B. sleeping arrangements
- C. support system
- D. immunization status
Correct answer: A
Rationale: Assessing feeding patterns is the priority during a home visit for a family with a new baby because it is crucial for the health and growth of the newborn. By evaluating the feeding patterns, the nurse can ensure that the baby is receiving adequate nutrition and address any feeding issues promptly. While sleeping arrangements, support system, and immunization status are important aspects to assess during a home visit, they are not as critical as ensuring the newborn's nutritional needs are being met.
4. An infant weighed 7 pounds 8 ounces at birth. If growth occurs at a normal rate, what would be the expected weight at 6 months of age?
- A. Double the birth weight
- B. Triple the birth weight
- C. Gain 6 ounces each week
- D. Add 2 pounds each month
Correct answer: A
Rationale: The correct answer is A: 'Double the birth weight.' Infants typically double their birth weight by 6 months of age. This is a common milestone in healthy infant growth and development. Choice B is incorrect because tripling the birth weight would be excessive and not in line with normal growth patterns. Choice C, 'Gain 6 ounces each week,' is not accurate as infant growth is not linear each week. Choice D, 'Add 2 pounds each month,' is also incorrect as this rate of growth would be too rapid and unrealistic for healthy infant development.
5. A client was re-admitted to the hospital following a recent skull fracture. Which finding requires the nurse's immediate attention?
- A. Lethargy
- B. Agitation
- C. Ataxia
- D. Hearing loss
Correct answer: A
Rationale: Lethargy is a critical finding that requires the nurse's immediate attention when a client with a recent skull fracture is readmitted to the hospital. It can indicate increased intracranial pressure or other serious complications such as hemorrhage or infection. Addressing lethargy promptly is crucial to prevent further deterioration. Agitation, ataxia, and hearing loss are important to assess but do not signify the same level of urgency as lethargy in this context.
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