Correct Answer: B

Rationale: The correct answer is to assess the heart rate before administering digoxin. Digoxin can lead to bradycardia, making it crucial to evaluate the heart rate to prevent potential complications. Checking blood pressure (Choice A) is important but not as critical as assessing the heart rate in this context. Monitoring respiratory rate (Choice C) and measuring oxygen saturation (Choice D) are not the most crucial assessments before administering digoxin, as the primary concern with this medication is its impact on heart rate.

Correct Answer: C

Rationale: When a client receiving a blood transfusion reports chills and back pain, it indicates a possible transfusion reaction. The nurse's priority action is to stop the transfusion immediately. Continuing the transfusion at a slower rate (Choice A) can exacerbate the reaction. Administering an antipyretic (Choice B) may help with fever but does not address the underlying issue of a transfusion reaction. Notifying the healthcare provider (Choice D) is important but should not delay the immediate action of stopping the transfusion to ensure the client's safety.

Correct Answer: B

Rationale: The correct initial intervention for postpartum hemorrhage is to perform a uterine massage. This action helps the uterus contract, controlling bleeding. Administering IV fluids may be necessary but is not the initial intervention. Monitoring the newborn's vital signs is important but not the priority when managing postpartum hemorrhage. Notifying the healthcare provider can be done after initiating immediate interventions to address the hemorrhage.

Correct Answer: A

Rationale: Regular monitoring of blood glucose levels is crucial in managing diabetes and preventing complications. This allows the client and healthcare team to make timely adjustments to the treatment plan. While maintaining a low-fat diet, exercising regularly, and taking medication as prescribed are all important aspects of diabetes management, monitoring blood glucose levels takes precedence as it provides real-time information about the client's condition and helps prevent acute complications.

Correct Answer: B

Rationale: The correct answer is B: Potassium 6.2 mEq/L. In chronic kidney disease, the kidneys struggle to regulate potassium levels, leading to hyperkalemia. A potassium level of 6.2 mEq/L is dangerously high and can cause life-threatening cardiac arrhythmias. Hemoglobin of 9.5 g/dL may indicate anemia, which is common in chronic kidney disease but is not immediately life-threatening. Creatinine and BUN levels are markers of kidney function; although elevated levels indicate kidney impairment, they are not acutely life-threatening like severe hyperkalemia.