a nurse is setting up a vision screening program for a new school at what age will vision be 2020 in children
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Nursing Elites

NCLEX-PN

NCLEX PN Exam Cram

1. At what age will vision be 20/20 in children?

Correct answer: C

Rationale: The correct answer is 6 years old. At this age, children typically have the potential for 20/20 vision. This is considered the standard age for achieving optimal vision clarity. Choices A, B, and D are incorrect as they are not typically associated with the age at which children achieve 20/20 vision.

2. To determine the standards of care for the institution, the nurse should consult?

Correct answer: C

Rationale: The correct answer is the 'Policies and procedure manual.' This manual outlines the policies and procedures that govern patient care within the institution, including the standards of care that healthcare providers are expected to follow. Consulting the policies and procedure manual ensures that the nurse is adhering to the established guidelines and protocols. Choices A, B, and D are incorrect because although they are important documents within an institution, they do not specifically define the standards of care for patient management. The organizational chart illustrates the hierarchy of the institution, personnel policies outline rules related to employees, and job descriptions detail specific roles and responsibilities, none of which directly define patient care standards.

3. Which physiologic mechanism best describes the function of the sodium-potassium pump?

Correct answer: A

Rationale: Active transport is the correct answer as it accurately describes the process involved in the sodium-potassium pump. The pump utilizes energy to move ions against their concentration gradient, maintaining cellular concentrations. Diffusion (choice B) is a passive process where substances move from an area of higher concentration to lower concentration. Filtration (choice C) involves the movement of solutes based on pressure gradients. Osmosis (choice D) is the movement of water across a semipermeable membrane.

4. A patient's nurse taking a history notes complaints of SOB and weakness in the lower extremities. The patient has a history of hyperlipidemia and hypertension. Which of the following may be occurring?

Correct answer: B

Rationale: In this scenario, the patient's symptoms of shortness of breath (SOB) and weakness in the lower extremities, along with a history of hyperlipidemia and hypertension, are suggestive of a myocardial infarction (MI). It is important to note that MI can present with a variety of symptoms, including those affecting the respiratory system and muscle weakness. Choices A, C, and D are incorrect because the patient's symptoms are more indicative of a myocardial infarction rather than congestive heart failure (CHF), chronic obstructive pulmonary disease (COPD), or peripheral vascular disease (PVD).

5. What vitamin is important in preventing peripheral neuritis in a client with alcohol abuse?

Correct answer: B

Rationale: The correct answer is 'Fat-soluble vitamins.' Vitamin B, not Vitamin D, is crucial in preventing peripheral neuritis in individuals with alcohol abuse. Vitamin B deficiency, particularly B1 (thiamine), is commonly associated with peripheral neuritis in alcoholics. Therefore, choices A, C, and D are incorrect. Vitamin D is not directly related to peripheral neuritis, and potassium deficiency typically presents with different symptoms.

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