which of the following measures the frequency of occurrence of the phenomenon during a given period of time and which deals with only new cases
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Nursing Elites

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?

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 client with rheumatoid arthritis is receiving methotrexate (Rheumatrex). The nurse should monitor the client for which of the following adverse effects?

Correct answer: A

Rationale: The correct answer is A: Leukopenia. Methotrexate, used in the treatment of rheumatoid arthritis, can lead to bone marrow suppression, resulting in leukopenia. This condition increases the risk of infections due to decreased white blood cell count. Choices B, C, and D are incorrect because methotrexate is not known to cause hyperglycemia, hypertension, or hypokalemia as its primary adverse effects.

3. When teaching a responsible family member how to perform a certain procedure for the patient, what is the best approach?

Correct answer: D

Rationale: The best approach when teaching a responsible family member a procedure for the patient is to demonstrate the procedure. By demonstrating, the family member can visually see how it is done, making it easier for them to understand and replicate. This hands-on approach is more effective than just describing the procedure (choice C) or arranging for practice (choice B) without a visual demonstration. Performing all the steps (choice A) may not be practical or necessary when the goal is to teach someone else how to do it.

4. The nurse is teaching a group of older adults about medication safety. Which of the following should be included in the teaching?

Correct answer: A

Rationale: The correct answer is A: keeping a list of all medications and dosages. Maintaining a comprehensive list of medications and their dosages is essential for older adults to prevent medication errors and dangerous interactions. Choice B is incorrect because sharing medications, even if family members have the same prescription, can lead to unintended adverse effects or inappropriate dosages. Choice C is incorrect as stopping medications when symptoms improve can be harmful if the full course of treatment is not completed. Choice D is incorrect as doubling up on missed doses can result in overdosing and adverse reactions.

5. What refers to a systematic approach of obtaining, organizing, and analyzing numerical facts so that conclusions may be drawn from them?

Correct answer: B

Rationale: The correct answer is B: 'Statistics'. Statistics is the systematic approach of obtaining, organizing, and analyzing numerical facts to draw conclusions. Vital statistics, morbidity, and mortality are more specific terms within the field of statistics. Vital statistics focus on births, deaths, marriages, and divorces. Morbidity refers to the incidence of illness or disease in a population. Mortality specifically deals with deaths in a population. Hence, B is the most comprehensive and fitting choice for the definition provided.

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