Correct Answer: B

Rationale: The most important information to provide to a patient with heart failure regarding fluid restrictions is to provide them with a fluid restriction plan. This plan helps the patient manage their fluid intake effectively, which is crucial in preventing complications associated with heart failure. Monitoring weight daily can be a part of the plan but is not the most important. Instructing the patient to avoid salty foods is beneficial but not as crucial as having a structured fluid restriction plan. Encouraging the patient to increase fluid intake would be counterproductive and potentially harmful in a patient with heart failure.

Correct Answer: B

Rationale: The nurse's priority action should be to withhold the medication until the trough level is obtained. This is crucial to ensure accurate dosing based on the patient's levels. Administering the medication before the peak level is obtained (choice A) can lead to incorrect dosing. Administering the medication based on the previous trough level (choice C) may not reflect the current levels accurately. Ensuring that the medication is administered within 2 hours of the peak level (choice D) is not necessary for obtaining accurate peak and trough levels.

Correct Answer: D

Rationale: Corrected Rationale: When a patient is prescribed a diuretic for hypertension, monitoring the patient's sodium levels is crucial. Diuretics can lead to alterations in sodium levels, potentially causing complications like hyponatremia. While monitoring other parameters like respiratory rate, blood pressure, and potassium levels may also be important, the primary concern with diuretic therapy is the risk of sodium imbalance, making the monitoring of sodium levels the most critical assessment.

Correct Answer: B

Rationale: The correct answer is to monitor the patient's daily weight. In heart failure, sudden weight gain indicates fluid retention, which can worsen the condition. Monitoring daily weight helps in early detection of fluid accumulation, allowing timely intervention. Restricting fluid intake (choice A) may be necessary but is not the priority at this point. Administering diuretics (choice C) should be done based on healthcare provider orders, not the nurse's independent decision. Increasing salt intake (choice D) is contraindicated in heart failure as it can exacerbate fluid retention.

Correct Answer: A

Rationale: The correct statement reflecting the principles of sterile technique is that sterile objects that come in contact with unsterile objects are considered contaminated. This principle is crucial in maintaining asepsis during medical procedures. Choice B is incorrect because items in a sterile package should only be used if they remain sterile; opening the package does not automatically contaminate the items. Choice C is incorrect as any part of a sterile field that hangs below the top of the table is considered unsterile. Choice D is incorrect as the edge of a sterile field and a border inward are typically considered unsterile to maintain the integrity of the sterile area.