Correct Answer: B

Rationale: To ensure optimal benefits from a metered-dose inhaler, the client should be instructed to compress the inhaler while slowly breathing in through the mouth. This technique facilitates the medication to reach deep into the lungs, allowing for an optimal bronchodilation effect. Option B is correct as it promotes the proper coordination of inhaler compression and inhalation, ensuring effective drug delivery. Options A, C, and D are incorrect as they do not support deep lung penetration of the medication, which is essential for its effectiveness in treating respiratory conditions.

Correct Answer: B

Rationale: To calculate the volume to administer, use the formula: (Volume to administer = (Ordered Dose × Volume on hand) / Dose on hand). In this case, it would be (4 mg × 1 mL) / 5 mg = 0.8 mL. Therefore, the nurse should administer 0.8 mL of diazepam. Choice A (0.2 mL) is incorrect because it miscalculates the dosage. Choice C (1.25 mL) and Choice D (2.0 mL) are incorrect as they do not align with the correct calculation based on the ordered dose and available concentration. The correct answer, 0.8 mL, is derived from accurate dosage calculation and aligns with the formula for IV medication administration, ensuring the safe and effective delivery of the medication to the client.

Correct Answer: A

Rationale: Assessing pulse characteristics is the priority in this situation due to the potential impact of lightning as a form of electrical current, which can cause irregular heart rhythms. It is crucial to evaluate the pulse rate and regularity to assess for adequate circulation and potential cardiac issues. Since the client is alert and talking, the airway is likely patent, making assessing the airway less urgent. Entrance and exit wounds and cervical spine injury assessments should follow the evaluation of pulse characteristics to ensure proper circulation and prioritize life-threatening issues first. Checking the pulse first will guide further interventions and help in determining the client's hemodynamic status.

Correct Answer: B

Rationale: The correct answer is the right cephalic vein. The cephalic vein is a large and superficial vein commonly used for IV access. Documenting the specific anatomic name of the vein used for IV access, such as the cephalic vein, is essential for accurate medical records. Option A, the left brachial vein, is incorrect as the brachial vein is too deep to be accessed for IV infusion. Option C, the dorsal side of the right wrist, is not a recommended IV access site due to fragile veins and potential pain for the patient. Option D, right upper extremity, is too broad and lacks the specificity necessary for precise documentation of the IV access site.

Correct Answer: D

Rationale: When administering medications through a nasogastric tube connected to low intermittent suction, the nurse should first turn off the intermittent suction device. This step is crucial to prevent the medications from being immediately suctioned out before they can be absorbed. Clamping the nasogastric tube is not the initial action because it may cause pressure buildup and lead to complications. Confirming the placement of the tube is important but should not be the first step in this scenario. Using a syringe to instill the medications comes after ensuring the suction is turned off to enable proper administration and absorption of the medications.