Correct Answer: D

Rationale: The correct answer is D. Warmth and redness in the calf are indicative of a possible deep vein thrombosis (DVT), a serious complication post-surgery that requires immediate attention. Reporting this finding promptly to the provider is crucial for timely intervention. Choices A, B, and C are within normal limits for a postoperative client and do not indicate a potentially life-threatening condition like DVT.

Correct Answer: A

Rationale: Administering anticoagulants is the most crucial nursing action for a patient experiencing a deep vein thrombosis (DVT). Anticoagulants help prevent further clot formation and reduce the risk of complications such as pulmonary embolism. Encouraging ambulation, applying compression stockings, and monitoring oxygen saturation are important interventions in managing DVT, but administering anticoagulants takes priority as it directly targets the clotting process and prevents clot progression.

Correct Answer: D

Rationale: Administering oxygen via a non-rebreather mask is the appropriate intervention for a client at risk for pulmonary edema as it helps improve oxygenation by delivering a high concentration of oxygen. Placing the client in a supine position can exacerbate pulmonary edema by increasing venous return to the heart, leading to fluid overload. Encouraging increased fluid intake is contraindicated in clients with heart failure and at risk for pulmonary edema, as it can worsen fluid accumulation. Elevating the client's legs when in bed is more appropriate for clients with conditions such as venous insufficiency or edema in the lower extremities, not for pulmonary edema.

Correct Answer: D

Rationale: A WBC count of 15,000/mm³ is elevated and may indicate infection, which should be reported. High WBC count is a sign of inflammation or infection, and in a postoperative client, it can be indicative of surgical site infection or another complication. Urinary output, serosanguineous wound drainage, and a heart rate of 94/min are all within normal ranges for a client post cholecystectomy and do not raise immediate concerns for infection or complications.

Correct Answer: B

Rationale: The correct answer is B. An elevated creatinine level, such as 1.8, suggests potential kidney dysfunction, requiring further assessment. Sodium level within normal limits (135-145 mEq/L), hemoglobin level of 15 g/dL, and potassium level of 4.2 mEq/L are all within normal ranges and do not indicate immediate concerns. Therefore, they do not require further evaluation at this time.