Correct Answer: B

Rationale: The correct instruction the nurse should reinforce with the client undergoing radiation therapy is to avoid using perfumed lotions. This is essential to reduce the risk of skin irritation, as perfumed lotions can exacerbate skin reactions during radiation therapy. Applying sunscreen before going outside is generally a good practice but not specifically related to radiation therapy. Massaging the area daily is contraindicated during radiation therapy as it can further irritate the skin. Taking vitamin supplements with food is important for overall health but is not a specific instruction related to radiation therapy.

Correct Answer: B

Rationale: The correct answer is B because the client should take antitubercular medications for a minimum of 6 months to ensure complete eradication of the infection. Choice A is incorrect as stopping the medication early can result in treatment failure and development of drug-resistant TB. Choice C is incorrect as regular TB skin tests are not needed once the client has been diagnosed and treated. Choice D is incorrect as wearing a mask at all times is not necessary for a client with active TB; proper cough etiquette should be followed instead.

Correct Answer: A

Rationale: Bradycardia is a common sign of digoxin toxicity. Digoxin, a cardiac glycoside, can lead to toxicity manifesting as bradycardia due to its effect on the heart's electrical conduction system. Tachycardia (choice B) is not typically associated with digoxin toxicity. Hypotension (choice C) and hyperkalemia (choice D) are not direct signs of digoxin toxicity. Therefore, the correct answer is bradycardia.

Correct Answer: A

Rationale: The correct way to assess for pitting edema is to press over a bony area, typically the tibia, for 5 seconds and then release. This allows for the identification of pitting edema, characterized by an indentation that persists for a few seconds. Choice B is incorrect as pitting edema assessment does not involve checking for discoloration. Choice C is incorrect as the presence of a rash is not indicative of pitting edema. Choice D is incorrect as rebound tenderness is a different assessment used for abdominal conditions, not for pitting edema.

Correct Answer: A

Rationale: Infection and electrolyte imbalance are common complications of TPN. Infection can occur due to the invasive nature of TPN, which provides a direct route for pathogens. Electrolyte imbalances can arise from the composition of the TPN solution or improper monitoring. Hyperglycemia and sepsis (Choice B) are potential complications but are not as directly associated with TPN as infection and electrolyte imbalance. Kidney failure and hypovolemia (Choice C) are less common complications of TPN. Fluid overload and liver damage (Choice D) are potential complications but are not as frequently observed as infection and electrolyte imbalance.