Correct Answer: C

Rationale: The correct intervention for a client with deep vein thrombosis (DVT) is to apply cold packs to the affected extremity. Cold packs help reduce swelling and pain by causing vasoconstriction. Massaging the affected extremity could dislodge a clot, leading to serious complications. Encouraging bed rest may increase the risk of clot propagation, while frequent ambulation is contraindicated as it can dislodge clots.

Correct Answer: C

Rationale: The correct intervention for a client with COPD is to teach pursed-lip breathing. This technique helps improve oxygenation and reduce dyspnea by promoting better air exchange in the lungs. Encouraging deep breaths may not be suitable for clients with COPD as it can lead to air trapping. Administering oxygen is important in COPD, but teaching pursed-lip breathing is a more direct intervention to help the client manage their condition. Limiting fluid intake is not a standard intervention for COPD and may not be relevant to improving respiratory status.

Correct Answer: B

Rationale: The correct answer is Hypokalemia. Hypokalemia is the most concerning electrolyte imbalance for a patient receiving digoxin because it can increase the risk of digoxin toxicity. Low potassium levels can potentiate the effects of digoxin on the heart, leading to serious cardiac arrhythmias. Hyperkalemia (Choice A) is not typically associated with digoxin use. Hyponatremia (Choice C) and Hypercalcemia (Choice D) are not directly related to digoxin therapy and do not pose the same risk of toxicity.

Correct Answer: A

Rationale: The correct instruction for the nurse to include is to advise the client to avoid using deodorant until the incision heals. Using deodorant can lead to skin irritation, which should be prevented following a mastectomy. Choice B is incorrect because performing arm exercises should typically be delayed until recommended by the healthcare provider to prevent strain on the surgical site. Choice C is incorrect as tight-fitting clothing can increase discomfort and hinder proper healing. Choice D is also incorrect because initiating arm exercises should be based on the healthcare provider's guidance and not a specific timeframe.

Correct Answer: A

Rationale: The best method to monitor fluid balance in a patient receiving diuretics is to monitor daily weight. Daily weighing is a precise way to assess changes in fluid status as it reflects variations in total body water. Monitoring intake and output (choice B) is also important but may not provide as accurate a measurement as daily weight. Monitoring blood pressure (choice C) is essential but does not directly measure fluid balance. Monitoring edema (choice D) is helpful to assess fluid status visually but may not be as sensitive as daily weight measurements in detecting subtle changes in fluid balance.