Correct Answer: A

Rationale: Placing a pillow between the client's legs is the correct action to prevent dislocation of the prosthesis after hip arthroplasty. This positioning helps maintain proper alignment and stability of the hip joint, reducing the risk of dislocation. Placing the client in a high Fowler's position (choice B) is not recommended after hip arthroplasty as it may strain the hip joint. Maintaining the client in a side-lying position (choice C) or keeping the client's legs elevated (choice D) does not provide the same level of support and alignment as placing a pillow between the legs.

Correct Answer: A

Rationale: The correct answer is Hypokalemia. Diuretics, such as furosemide, commonly cause potassium loss in patients, leading to hypokalemia. This electrolyte imbalance should be closely monitored to prevent complications like cardiac arrhythmias. Hypercalcemia (Choice B) is not typically associated with diuretic use. Hyponatremia (Choice C) involves low sodium levels and can occur in conditions like syndrome of inappropriate antidiuretic hormone secretion (SIADH) but is not directly caused by diuretics. Hypermagnesemia (Choice D) is an excess of magnesium, usually not a common electrolyte imbalance induced by diuretics.

Correct Answer: A

Rationale: Administering oxygen is the priority nursing action for a patient experiencing shortness of breath. Oxygen therapy aims to improve oxygenation levels quickly, addressing the underlying cause of the symptom. Repositioning the patient, checking oxygen saturation, and elevating the head of the bed are important interventions but administering oxygen takes precedence in this scenario to ensure adequate oxygen supply to the body.

Correct Answer: A

Rationale: The correct answer is to administer epinephrine as the first intervention for a patient experiencing anaphylactic shock. Epinephrine is crucial in reversing the allergic reaction and restoring cardiovascular stability. Corticosteroids (Choice B) are not the first-line treatment for anaphylactic shock but may be used as an adjunct therapy. Antihistamines (Choice C) can help relieve itching and hives but are not as effective as epinephrine in treating the systemic effects of anaphylaxis. Oxygen (Choice D) may be necessary to support breathing in severe cases of anaphylaxis, but administering epinephrine takes precedence in the management of anaphylactic shock.

Correct Answer: D

Rationale: A weight gain of 2.3 kg (5 lb) in 1 week can indicate worsening gestational hypertension and should be reported to the provider. Sudden weight gain in a client with gestational hypertension can be a sign of fluid retention, which could worsen the hypertension and lead to complications like preeclampsia. The other options, blood pressure of 140/90 mm Hg, fasting blood glucose of 120 mg/dL, and urinary output of 40 mL/hr, are within normal limits for a client with gestational hypertension and do not pose an immediate concern that requires reporting to the provider.