Correct Answer: A

Rationale: In an adult client, the healthcare professional should pull the pinna up and back before inserting the otoscope. This action helps straighten the S shape of the ear canal, making it easier to insert the otoscope directly and comfortably. Tipping the client's head down and toward or away from the examiner is not the correct action when using an otoscope in an adult. Pulling the pinna down and forward is typically done when examining an infant or a child younger than 3 years old to straighten their ear canal for better visualization.

Correct Answer: C

Rationale: An ophthalmoscope is a tool used to visualize the internal structures of the eye during an examination. The optic disc, located on the internal surface of the retina, can be best visualized using an ophthalmoscope. The iris, cornea, and conjunctiva are superficial structures that can be examined without the need for an ophthalmoscope. Therefore, the correct answer is the optic disc. Choices A, B, and D are incorrect because they are external structures that can be examined directly without the use of an ophthalmoscope.

Correct Answer: C

Rationale: The correct answer is a client who states they are not interested. While lack of interest can hinder learning motivation, it is not a physical or mental barrier that directly impacts the learning process. On the other hand, a client who took Ambien® an hour ago may experience drowsiness or impaired cognitive function, affecting their ability to learn. A bipolar client in a manic phase may exhibit symptoms such as racing thoughts, distractibility, and impulsivity, making it challenging for them to focus and engage in the learning process. A client with dysphagia may have difficulty swallowing, which can interfere with their ability to take oral medications or participate in activities that involve swallowing.

Correct Answer: D

Rationale: The correct answer is, 'I take my Lipitor and my other morning medications with my grapefruit juice at breakfast.' This statement indicates a need for reinforced teaching because grapefruit juice should be avoided when taking Lipitor. Grapefruit juice blocks the enzymes needed to break down the drug, which leads to excessive amounts of the drug in the body. Choices A, B, and C show appropriate timing and administration of Lipitor, whereas choice D poses a potential risk due to the interaction between grapefruit juice and Lipitor.

Correct Answer: C

Rationale: The least appropriate action is for the LPN to administer all ordered medications except for the Cefazolin. The LPN should always consider the client's documented allergy to Penicillin seriously. It is crucial to discuss the order with the care team before administering Cefazolin to ensure patient safety. Administering a medication that could potentially cause harm due to a documented allergy is unsafe practice. While monitoring the client after a test dose of Cefazolin is important, it should not precede clarification with the care team regarding the allergy and the appropriateness of the medication. Therefore, withholding the Cefazolin is the most appropriate action in this scenario.