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 6-month-old infant who is being treated for developmental dysplasia of the hip has been placed in a hip spica cast. The nurse should teach the parents to

Correct answer: C

Rationale: The correct answer is to check every few hours for the next day or 2 for swelling in the baby's feet. Swelling in the baby's feet could indicate compromised circulation due to the cast, and frequent checks are necessary to ensure that there are no complications. Choices A, B, and D are incorrect because rubbing the skin with a cotton swab, placing favorite items in the crib, and turning the baby with the abduction stabilizer bar do not address the potential issue of compromised circulation and swelling in the baby's feet.

3. What is the FIRST STEP for thermal protection of a newborn?

Correct answer: A

Rationale: The correct first step for thermal protection of a newborn is to dry the baby thoroughly immediately after birth. This helps prevent heat loss and is crucial in maintaining the baby's body temperature. Choice B, covering the baby with a clean, dry cloth after the cord has been cut, is not the initial step as drying the baby comes first. Choice C, drying the baby thoroughly after the cord has been cut, is also not the first step. Choice D, covering the baby with a clean, dry cloth immediately after birth, is not as effective as drying the baby to prevent heat loss.

4. A client with a peptic ulcer is scheduled for a vagotomy and pyloroplasty. The nurse explains that the purpose of this surgery is to:

Correct answer: B

Rationale: The correct answer is B: "Reduce acid secretion." Vagotomy is performed to reduce acid secretion by cutting the vagus nerve, which stimulates acid production. Choices A, C, and D are incorrect. A vagotomy does not increase acid secretion, promote gastric emptying, or remove the ulcerated area. It specifically aims to decrease acid production to help in the healing of peptic ulcers.

5. What is the primary function of a public health nurse?

Correct answer: C

Rationale: The primary function of a public health nurse is to promote and protect the health of populations. Public health nurses focus on preventing diseases, promoting healthy behaviors, and addressing health disparities within communities. Providing bedside care (choice A) is typically done by nurses in clinical settings, not public health nurses. Administering medications (choice B) is part of nursing practice but not the primary role of a public health nurse. Performing surgical procedures (choice D) is usually the responsibility of surgical nurses or healthcare providers specializing in surgery, not public health nurses.

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