Correct Answer: B

Rationale: The correct statement to include is to 'Keep your abdominal muscles tightened when lifting objects.' This practice helps protect the back from injury by providing core stability. Rubbing hands together for 10 seconds when washing them (Choice A) is a good hygiene practice, but not directly related to warehouse work safety. Ensuring 20% or less of calories come from saturated fats (Choice C) is important for overall health but not specific to workplace safety. Engaging in aerobic exercise 2 to 4 days per week for 20 minutes (Choice D) is beneficial for health but not as directly relevant to preventing injuries while working in a warehouse.

Correct Answer: D

Rationale: In the preoperative phase, determining what the client knows about the surgery is the priority. This action helps address misconceptions, provide necessary information, and ensure the client's understanding and cooperation. Choices A, B, and C are important aspects of preoperative care but assessing the client's knowledge about the surgery takes precedence to alleviate fears, enhance communication, and optimize outcomes.

Correct Answer: D

Rationale: Tremors, nervousness, and insomnia indicate that the dose may be too high, requiring a dose adjustment.

Correct Answer: C

Rationale: The client should never double the dose if a dose is missed. This can lead to an overdose, which can cause serious adverse effects. Instead, the client should take the next dose as scheduled or consult the provider for guidance.

Correct Answer: C

Rationale: The correct answer is C: Administer regular insulin IV infusion. In diabetic ketoacidosis (DKA), the priority intervention is to rapidly decrease blood glucose levels. Administering regular insulin via IV infusion helps in lowering blood glucose effectively and quickly. Choice A, administering a dextrose 50% IV bolus, is incorrect because it would further increase blood sugar levels. Choice B, providing orange juice, is not appropriate for treating DKA as it contains sugar that will elevate blood glucose levels. Choice D, giving oral metformin, is not suitable for immediate blood glucose reduction as it acts over time and is not the first-line treatment for DKA.