Correct Answer: A

Rationale: To calculate the amount of drug to be administered, divide the ordered dose by the concentration of the medication in the vial. In this case, 0.45 mg ÷ 3 mg/mL = 0.15 mL. Therefore, the correct answer is 0.15 mL. Choice B (6.6 mL) is incorrect as it does not result from the correct calculation. Choice C (1.5 mL) is incorrect as it is not the result of dividing the ordered dose by the concentration. Choice D (0.65 mL) is incorrect as it is not the accurate calculation based on the provided information.

Correct Answer: B

Rationale: The correct answer is, 'I will wait five minutes after taking this medication and then gargle water.' After using an inhaled glucocorticoid, it is essential to wait for 5 minutes and then gargle water to remove any residue from the mouth, which can reduce the risk of developing thrush, a fungal infection. Choice A is correct as holding the breath for 10 seconds after each puff helps the medication reach deep into the lungs. Choice C is also correct as waiting at least one minute between puffs ensures proper delivery of the medication. Choice D is incorrect because it is important to take the medication daily as prescribed to control asthma symptoms, even if the person is not experiencing any at that moment.

Correct Answer: B

Rationale: When a client is alert and cooperative but has sustained multiple fractures, the nurse should prioritize obtaining health history information while performing the examination and initiating emergency measures. This approach allows the nurse to gather essential information without delaying immediate interventions. Option A is incorrect because collecting health history information before addressing the immediate need for treatment may lead to a delay in necessary interventions. Option C is incorrect as it includes non-urgent aspects of data collection that are not a priority in this critical situation. Option D is incorrect because delaying health history questions until after treating the fractures may result in missing crucial information essential for the client's immediate care.

Correct Answer: D

Rationale: When interpreting visual acuity testing results using the Snellen chart, the recorded numeric fraction represents the distance the client is standing from the chart and the distance a normal eye could read that particular line. A reading of 20/80 means that the client can read at 20 feet what a client with normal vision can read at 80 feet. This indicates visual impairment but does not meet the criteria for legal blindness, which is defined as best-corrected vision in the better eye of 20/200 or worse. Normal visual acuity is 20/20. Therefore, the correct interpretation is that the client can read at a distance of 80 feet what a client with normal vision can read at 20 feet. Choice A is incorrect because 20/80 does not meet the criteria for legal blindness. Choice B is incorrect as the client's vision is impaired. Choice C is incorrect because it reverses the interpretation of the fraction.

Correct Answer: A

Rationale: The correct answer is vitamin B12 deficiency. Long-term use of Metformin can lead to vitamin B12 deficiency, and a vegan diet is low in vitamin B12. Symptoms of vitamin B12 deficiency include anemia, fatigue, confusion, and mood changes. Chronic hypoglycemia is unlikely in a client with Type 2 Diabetes who has been taking Metformin as it typically causes hyperglycemia. Vitamin D deficiency usually presents with symptoms related to bones and muscles, not confusion and mood changes. Increased tolerance to Metformin does not explain the client's new symptoms, which are more indicative of a nutritional deficiency like vitamin B12.