Correct Answer: A

Rationale: The most important instruction to provide when teaching a patient about self-administration of insulin is to rotate injection sites to prevent tissue damage. Rotating injection sites helps prevent lipodystrophy (tissue damage) and ensures proper insulin absorption. Option B is incorrect because the angle of insulin injection varies depending on the patient's body composition. Injecting at a 90-degree angle is not always necessary. Option C is not the most crucial instruction; while storing insulin in the refrigerator is important, it is not the priority when teaching self-administration. Option D is also important for maintaining consistency but is not as critical as rotating injection sites to prevent tissue damage.

Correct Answer: A

Rationale: Administering insulin is the priority intervention for a patient admitted with high blood sugar levels because it helps lower the blood sugar levels effectively and rapidly. Insulin is a crucial medication for managing hyperglycemia in diabetes. Encouraging exercise (choice B) can be beneficial in the long term for managing blood sugar levels but is not the most immediate priority. While staying hydrated (choice C) is important, it is not the priority intervention when dealing with high blood sugar levels. Providing a low-sugar diet (choice D) is essential for long-term diabetes management but is not the immediate action needed to address high blood sugar levels in an admitted patient.

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: B

Rationale: Reporting medication discrepancies to the nurse manager is crucial to ensure patient safety and proper follow-up. The nurse manager is responsible for addressing medication errors and implementing necessary corrective actions. Choice A is incorrect because simply correcting the discrepancy without reporting it may lead to potential harm to the patient and violates professional standards. Choice C is incorrect as ignoring the discrepancy increases the risk of medication errors going unresolved. Choice D is incorrect because discussing the discrepancy with the client before verifying the accuracy of the record can cause confusion and compromise patient safety.

Correct Answer: B

Rationale: Checking the patient's weight daily is the most reliable indicator of fluid status because weight changes can directly reflect fluid retention or loss. Monitoring vital signs (Choice A) can provide some information but is not as specific as weight changes. Measuring intake and output (Choice C) is crucial but may not always accurately reflect fluid balance. Monitoring urine color (Choice D) can give some insights into hydration levels, but it is not as reliable as daily weight checks for assessing overall fluid status.