Correct Answer: A

Rationale: The correct answer is A: Somnolence. Somnolence can indicate lactic acidosis, a rare but serious adverse effect of Metformin. Lactic acidosis is manifested by extreme drowsiness, hyperventilation, and muscle pain. Clients should be instructed to report these symptoms to their healthcare provider promptly to prevent further complications.

Correct Answer: D

Rationale: To prevent Otitis Externa, it is important to remove water from the ears after showering or swimming. This helps reduce the risk of moisture buildup in the ear canal, which can lead to infection. Cleaning the ear with a cotton-tipped swab daily can actually increase the risk of injury or infection. Placing earplugs in the ears when sleeping at night may trap moisture and promote bacterial growth. Using a cool water irrigation solution to remove earwax is not recommended as it can disrupt the natural balance of the ear canal.

Correct Answer: A

Rationale: Prednisone can lead to bone loss, so clients should increase their intake of vitamin D and calcium to help maintain bone health.

Correct Answer: B

Rationale: To determine the number of tablets needed, divide the desired dose by the dose per tablet. In this case, (2 mg / 1 mg/tablet) = 2 tablets required to administer the prescribed dose of Haloperidol.

Correct Answer: D

Rationale: When educating a client about Buspirone, the nurse should highlight that this medication has a low risk for physical or psychological dependence or tolerance. This information is crucial for the client to understand the safety profile of Buspirone compared to other medications used for anxiety.