a dispersion consists of a solute dispersed through a dispersing vehicle which of the following dispersions is a liquid for topical application that c
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HESI LPN

HESI PN Exit Exam 2023

1. A dispersion consists of a solute dispersed through a dispersing vehicle. Which of the following dispersions is a liquid for topical application that contains insoluble solids or liquids?

Correct answer: B

Rationale: The correct answer is B, 'Lotion.' A lotion is a liquid dispersion that contains insoluble solids or liquids for topical application. Ointments are more semi-solid and occlusive, pastes are thicker and contain higher concentrations of solids, and gels have a jelly-like consistency due to their three-dimensional network structure. Therefore, among the options, a lotion is the most suitable choice for containing insoluble solids or liquids for topical application.

2. A client reports being able to swallow only small bites of solid food and liquids for the last 3 months. The PN should assess the client for what additional information?

Correct answer: C

Rationale: The correct answer is C: History of alcohol or tobacco use. A history of alcohol or tobacco use is significant as both are risk factors for esophageal cancer or other esophageal disorders that could cause difficulty swallowing (dysphagia). This information helps in evaluating the underlying cause of the symptom. Choices A, B, and D are less relevant in this context. While a past traumatic injury to the neck could potentially cause swallowing difficulties, given the chronic nature of the symptom in this case, it is more important to focus on potential risk factors associated with esophageal disorders like alcohol and tobacco use. Daily consumption of hot beverages and daily dietary intake of roughage are less likely to be directly related to the client's current swallowing issue.

3. Which vitamin deficiency is most associated with night blindness?

Correct answer: A

Rationale: The correct answer is Vitamin A. Vitamin A deficiency leads to night blindness because this vitamin is crucial for the formation of rhodopsin, a photopigment in the retina. Rhodopsin is essential for vision in low-light conditions. Vitamin B12 deficiency can lead to anemia and neurological issues but is not directly related to night blindness. Vitamin C deficiency can cause scurvy, affecting connective tissues, but not night vision. Vitamin D deficiency can lead to bone disorders but is not primarily associated with night blindness.

4. Based on the computer documentation in the EMR, which action should the PN implement?

Correct answer: A

Rationale: The rubella vaccine is crucial for preventing rubella infection, which can cause severe congenital disabilities if contracted during pregnancy. Administering the vaccine subcutaneously is the correct action based on EMR documentation. Observing breastfeeding, calling the nursery for blood type results, and administering pain medication are not indicated by the EMR documentation and are not relevant to the situation described in the question.

5. What is the first action a healthcare professional should take when a patient’s nasogastric (NG) tube becomes clogged?

Correct answer: C

Rationale: When a patient's nasogastric (NG) tube becomes clogged, the first action to take is to attempt to aspirate the clog with a syringe. This is a standard and initial step to clear the blockage in the tube. Flushing the tube with water (Choice A) may not address the specific clog; repositioning the patient (Choice B) is not directly related to clearing the tube. Administering a medication to dissolve the clog (Choice D) should only be considered after simpler methods like aspiration have been attempted.

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