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: C

Rationale: The correct answer is to administer the transfusion at a slow rate for the first 15 minutes. This practice is crucial as it helps in detecting any adverse reactions early on. Checking the patient's vital signs every 30 minutes (choice B) is important but not as essential as ensuring a slow rate at the beginning. Administering blood within 4 hours (choice A) is a standard practice but not directly related to the initial administration. Documenting the transfusion immediately (choice D) is necessary but does not directly impact the safety of the initial administration.

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.

Correct Answer: C

Rationale: The correct answer is C: 'Do you have a chronic disease?' Patients with chronic diseases are more susceptible to infections due to factors like general debilitation and nutritional impairment. Choices A, B, and D are incorrect because having children in the home, having a spouse, or religious beliefs do not directly impact susceptibility to infectious diseases.

Correct Answer: B

Rationale: The correct first step for the nurse to take in this situation is to ask the colleague if they intend to report the error. It is important to address the error promptly and directly with the colleague involved to ensure that the appropriate actions are taken to correct the mistake and prevent harm to the client. Completing an incident report, calling the healthcare provider, or notifying the supervisor can be done after discussing the error with the colleague. Immediate communication with the colleague directly involved in the error is crucial to address the situation effectively.