Correct Answer: B

Rationale: The most important action to ensure patient safety when administering a blood transfusion is to verify the patient's identity with two identifiers before starting the transfusion. This step is crucial to prevent transfusion errors, such as giving the blood to the wrong patient. Checking vital signs, ensuring timely administration, and confirming informed consent are also important aspects of blood transfusion safety but verifying the patient's identity is the highest priority to prevent errors.

Correct Answer: B

Rationale: The correct intervention for a patient receiving a blood transfusion is to monitor the patient for signs of circulatory overload. This is crucial to prevent fluid overload, which can lead to serious complications. Administering antihistamines is not a routine intervention during blood transfusions unless the patient shows signs of an allergic reaction. Ensuring the completion of the blood transfusion within a specific time frame is not as critical as monitoring for circulatory overload. Checking vital signs every 30 minutes is essential, but the specific focus should be on monitoring for signs of circulatory overload.

Correct Answer: B

Rationale: The correct answer is to discontinue the medication and notify the healthcare provider when a patient is experiencing an allergic reaction to a medication. This action is crucial to prevent further harm to the patient. Monitoring blood pressure (choice A) or urine output (choice D) may be important but is not the priority when managing an allergic reaction. Administering an antihistamine (choice C) should only be done after discontinuing the medication and consulting with the healthcare provider.

Correct Answer: B

Rationale: Correct hand hygiene is crucial for preventing the spread of infections and ensuring patient safety. When a nurse observes another healthcare worker skipping hand hygiene practices, it is essential to report this behavior to the supervisor. Reporting ensures that appropriate action is taken to address the issue and maintain a safe environment for patients. Ignoring the situation (Choice A) may compromise patient safety. Discussing the issue directly with the nurse (Choice C) may not always be effective in ensuring compliance. Doing nothing and continuing with patient care (Choice D) disregards the importance of infection control protocols.

Correct Answer: B

Rationale: The most important action to ensure patient safety when administering a blood transfusion is to verify the patient's identity with two identifiers before starting the transfusion. This step is crucial to prevent transfusion errors, such as giving the blood to the wrong patient. Checking vital signs, ensuring timely administration, and confirming informed consent are also important aspects of blood transfusion safety but verifying the patient's identity is the highest priority to prevent errors.