Correct Answer: B

Rationale: The correct first action for a client with an NG tube experiencing nausea and decreased gastric secretions is to irrigate the NG tube with sterile water. This helps alleviate blockages and can improve the client's symptoms. Increasing the suction pressure (Choice A) may exacerbate the issue and cause further discomfort. Turning the client onto their left side (Choice C) is not directly related to addressing the reported symptoms. Replacing the NG tube with a new one (Choice D) should be considered only after attempting initial interventions like irrigation.

Correct Answer: A

Rationale: The correct answer is A: Immobility and oral contraceptive use. Immobility and oral contraceptive use are significant risk factors for deep vein thrombosis (DVT). Immobility leads to blood stasis, increasing the risk of clot formation, while oral contraceptive use can promote hypercoagulability. Prevention strategies for DVT include promoting mobility to enhance blood circulation and using anticoagulants to prevent clot formation. Choices B, C, and D are incorrect. While pregnancy and smoking can increase the risk of DVT, they are not the specific factors mentioned in the question. Similarly, obesity and varicose veins, as well as hypertension and high cholesterol, are not the primary risk factors associated with DVT.

Correct Answer: A

Rationale: The correct technique for administering an intramuscular (IM) injection is to locate the injection site and insert the needle at a 90-degree angle. This angle ensures that the medication is delivered into the muscle for proper absorption. Choice B is incorrect because a 45-degree angle is typically used for subcutaneous injections, not intramuscular. Choice C is incorrect as massaging the site after an injection can cause the medication to disperse unevenly. Choice D is incorrect as a 15-degree angle would not reach the muscle layer effectively for an IM injection.

Correct Answer: C

Rationale: When communicating with a client who has expressive aphasia, using a picture board is an effective method as it provides an alternative means of communication. Option A, speaking slowly, may not improve understanding for someone with expressive aphasia. Option B, providing written instructions, may also be challenging for individuals with this condition. Option D, writing on a whiteboard, may not be as helpful as using a picture board in facilitating communication for a client with expressive aphasia.

Correct Answer: B

Rationale: The correct answer is B: Hydrogen peroxide. Hydrogen peroxide is commonly used to clean tracheostomy cannulas to prevent infection. Normal saline (choice A) is used for wound irrigation but not for cleaning inner cannulas of tracheostomy tubes. Iodine (choice C) and alcohol (choice D) are not recommended for cleaning tracheostomy cannulas as they can be too harsh and irritating to the delicate tissues of the airway.