Correct Answer: B

Rationale: Preventing infection is crucial in clients with gangrene to halt the spread of infection and avert further complications. Infections can exacerbate tissue damage and lead to systemic complications, making infection prevention a priority in the care plan for this client. Restoring skin integrity and promoting healing may not be achievable goals until the infection is under control. Improving nutrition is important for overall health but may not be the priority when the immediate concern is preventing infection.

Correct Answer: C

Rationale: The correct first action for the nurse to take is to check the client's status and lead placement. This step is crucial to ensure that the alarm is not triggered by a simple issue such as lead displacement. Calling a code blue (choice A) is premature without assessing the client first. Contacting the healthcare provider (choice B) can be done after ruling out basic causes for the alarm. Pressing the recorder button (choice D) is not as urgent as checking the client's status and lead placement in this scenario.

Correct Answer: B

Rationale: The priority action for the nurse is to review the medication actions and interactions. Interferon alfa-2a and ribavirin combination therapy for hepatitis C can lead to neuropsychiatric side effects, including depression. By assessing the medication actions and interactions, the nurse can identify if the depression is a known side effect of the medications, and further intervention or adjustment of the treatment plan may be required to address the client's emotional well-being. Recommending mental health counseling (choice A) may be necessary but should come after ensuring that the depression is not solely caused by medication side effects. Assessing the client's daily activity level (choice C) and providing information about a support group (choice D) are important interventions but addressing the medication's potential contribution to the depression takes precedence.

Correct Answer: A

Rationale: Significant pedal edema, indicated by 3+, suggests ongoing or worsening venous insufficiency. This can be a sign that the care provided has not been effective in managing the deep vein thrombosis (DVT) and the associated complications. Monitoring and addressing pedal edema is crucial in the evaluation of DVT treatment outcomes and overall patient care. Choices B, C, and D are not indicative of the least success in meeting the outcome criteria for DVT. Slight residual calf tenderness, skin warmth, and a slightly larger calf girth do not necessarily point towards treatment failure or lack of improvement in DVT management.

Correct Answer: C

Rationale: The correct answer is C: Bed rest, with elevation of the affected extremity. Elevating the affected extremity is crucial in managing thrombophlebitis as it helps reduce swelling and promotes venous return. By elevating the affected extremity, the gravitational force assists in venous blood flow back to the heart, thereby reducing the risk of complications associated with thrombophlebitis. Choices A, B, and D are incorrect because they do not address the need for elevation, which is specifically beneficial in the management of thrombophlebitis.