Correct Answer: C

Rationale: Step 1: Reading labels carefully on vials containing flush solutions for locks is crucial to ensure the correct solution is being used. Step 2: Potassium chloride should not be used to flush locks as it can be fatal if administered incorrectly. Step 3: By carefully reading labels, the nurse can verify that the correct solution is being used, thus minimizing the risk of using potassium chloride. Summary: - Choice A is incorrect as using a dilute form of potassium chloride does not address the issue of incorrect administration. - Choice B is incorrect as warming the solution does not prevent the risk associated with using potassium chloride. - Choice D is incorrect as replacing locks does not address the root cause of the issue, which is improper administration.

Correct Answer: B

Rationale: The correct answer is B: Health behavior. Evaluating the patient's demonstration of self-injection assesses their ability to perform a specific health-related action. This choice focuses on the patient's actions and behaviors related to their health, aligning with the scenario provided. Choice A: Health status is incorrect because it refers to the patient's current physical condition, not their ability to perform a specific health action. Choice C: Psychological self-control is incorrect as it pertains to the patient's ability to regulate their emotions and impulses, not their ability to self-administer injections. Choice D: Health service utilization is incorrect as it relates to the frequency and pattern of healthcare services used by the patient, not their ability to perform a specific health behavior.

Correct Answer: D

Rationale: The correct answer is D, "Ineffective thermoregulation related to dehydration." The client's high serum glucose level of 618mg/dl indicates severe hyperglycemia, leading to dehydration. The client's hot, dry skin and elevated temperature can be signs of dehydration, impacting the body's ability to regulate temperature. Dehydration can also affect other vital signs, contributing to the elevated heart rate and low blood pressure. Addressing ineffective thermoregulation is crucial as it can lead to further complications. Choices A, B, and C are not the highest priority because addressing dehydration and ineffective thermoregulation takes precedence due to the immediate risk of complications such as heatstroke or hypothermia. Deficient volume, decreased cardiac output, and imbalanced nutrition are important but not as urgent in this scenario.

Correct Answer: D

Rationale: The correct answer is D: Autoimmune reaction. Guillain-Barre Syndrome is an autoimmune disorder where the immune system mistakenly attacks the peripheral nerves, leading to muscle weakness and paralysis. This is supported by the patient's presentation of weakness in the legs. Bacterial infection (A) can trigger Guillain-Barre Syndrome, but it is not the root cause. High-fat diet (B) and heredity (C) are not associated with the development of this syndrome. In summary, autoimmune reaction is the primary mechanism underlying Guillain-Barre Syndrome, resulting in the patient's muscle weakness and inability to walk.

Correct Answer: B

Rationale: The correct answer is B: Administering platelets, as ordered to maintain an adequate platelet count. In ITP, the client has low platelet count leading to risk of bleeding. Administering platelets helps raise platelet levels and prevent bleeding complications. Teaching coughing and deep-breathing techniques (A) is important for preventing respiratory infections but not directly related to ITP. Giving aspirin (C) is contraindicated as it can further decrease platelet count. Administering stool softeners (D) is important for preventing straining but not specific to managing ITP.