Correct Answer: B

Rationale: The correct instruction for using a metered-dose inhaler is to hold your breath for 10 seconds after inhaling the medication. This allows the medication to be absorbed more effectively in the lungs. Inhaling quickly and deeply while pressing down on the inhaler (Choice A) may cause the medication to deposit in the mouth and throat rather than reaching the lungs. Exhaling immediately after inhaling the medication (Choice C) may also lead to medication wastage. Shaking the inhaler before each use (Choice D) is not necessary for all types of inhalers and can sometimes cause improper drug delivery.

Correct Answer: A

Rationale: The correct first step in using a fire extinguisher is to remove the safety pin. This action enables the extinguisher to be activated and used effectively. Choice B, aiming the extinguisher at the base of the fire, comes after removing the safety pin. Choice C, squeezing the handle to release the extinguishing agent, and choice D, sweeping the extinguisher from side to side, are subsequent steps in using a fire extinguisher and should follow removing the safety pin.

Correct Answer: A

Rationale: Corrected Choice A, allowing extra time for the client to respond to questions, is the appropriate strategy when educating an older adult with type 2 diabetes mellitus. Older adults may need additional time to process information and formulate responses. Choice B is incorrect as it assumes the client will have difficulty understanding the information, which may not be the case. Choice C is incorrect because referencing the client's past experiences can help personalize the education session. Choice D is also incorrect as keeping the learning session private and one-on-one may not be necessary for all clients and may limit the potential benefits of group education and support.

Correct Answer: D

Rationale: When using wrist restraints, it is important to allow room for two fingers to fit between the client's skin and the restraints. This practice ensures proper circulation and comfort for the client while still providing the necessary level of security. Choice A is incorrect because removing restraints every 4 hours may compromise the effectiveness of restraint use. Choice B is incorrect as restraints should not be attached to the side of the bed where they could cause harm or be tampered with by the client. Choice C is incorrect because allowing minimal movement may lead to discomfort and compromise proper circulation.

Correct Answer: D

Rationale: Chest pain in a client with hypertension is the most concerning symptom as it may indicate a myocardial infarction or other serious cardiac event related to hypertension. Immediate intervention is required to address potential life-threatening conditions. Headache, blurred vision, and dizziness are common symptoms associated with hypertension but are not typically indicative of an acute cardiac event requiring urgent attention.