Correct Answer: B

Rationale: Redness and warmth in the calf can indicate a blood clot, specifically deep vein thrombosis (DVT), which is a serious complication post hip arthroplasty. The warmth and redness are signs of inflammation due to the clot formation. DVT can lead to a pulmonary embolism if not addressed promptly. Monitoring for this complication is crucial in postoperative care. Elevated heart rate, oxygen saturation within normal limits, and a slightly elevated temperature are common findings postoperatively and may not be alarming in the absence of other concerning symptoms.

Correct Answer: C

Rationale: Dependent edema is a common finding in clients with pneumonia due to fluid retention and decreased mobility. Bradycardia (Choice A) is not typically associated with pneumonia. Crackles in the lung bases (Choice B) are more commonly heard in conditions like heart failure or pulmonary edema. A productive cough (Choice D) can be seen in pneumonia but is not as specific as dependent edema.

Correct Answer: C

Rationale: The correct answer is to monitor aPTT for a patient receiving heparin therapy. The activated partial thromboplastin time (aPTT) is used to assess and adjust heparin dosage to ensure the patient is within the therapeutic range for anticoagulation. Monitoring the aPTT helps in preventing both clotting and bleeding complications. Platelet count (Choice A) is important to monitor for patients receiving antiplatelet therapy, not heparin. PT/INR (Choice B) is typically monitored for patients on warfarin therapy, not heparin. Monitoring the complete blood count (CBC) (Choice D) is essential for various conditions but is not specific to monitoring heparin therapy.

Correct Answer: B

Rationale: The correct answer is B: Consume 15 grams of a fast-acting carbohydrate. Consuming 15 grams of a fast-acting carbohydrate, such as glucose tablets or juice, helps raise blood glucose levels quickly in cases of hypoglycemia. Choice A is incorrect because avoiding carbohydrate-rich foods during hypoglycemia can worsen the condition. Choice C is incorrect as drinking water does not effectively raise blood glucose levels. Choice D is incorrect as eating a snack before exercising is more related to preventing exercise-induced hypoglycemia, not managing hypoglycemia.

Correct Answer: A

Rationale: The correct answer is A: 'The client's urine output decreases.' Desmopressin is used to treat diabetes insipidus by reducing excessive urine output. Therefore, a decrease in urine output indicates that the medication is effectively controlling the symptoms. Choices B, C, and D are incorrect because desmopressin primarily affects urine output, not blood pressure, heart rate, or urine specific gravity.