Correct Answer: C

Rationale: A temperature of 99°F (37.2°C) in a postoperative client requires immediate intervention as it may indicate the presence of infection. Elevated temperature post-surgery can be a sign of surgical site infection or systemic infection, which can lead to serious complications if not addressed promptly. Monitoring and managing a fever in a postoperative client is crucial to prevent further complications. The other findings, such as a heart rate of 90 beats per minute, oxygen saturation of 92%, and pain at the surgical site, are common postoperative assessments that may not necessarily require immediate intervention unless they are significantly out of normal range or causing severe distress to the client.

Correct Answer: D

Rationale: The correct answer is D, "Cardiac rate and rhythm." Monitoring cardiac rate and rhythm is crucial before initiating IVIG because bradycardia is a common side effect associated with this therapy. Assessing lung sounds and respiratory status (Choice A) is important, but cardiac monitoring takes precedence due to the risk of bradycardia. Skin integrity and color (Choice B) are important assessments, but they are not directly related to potential complications of IVIG infusion. Neurological status and level of consciousness (Choice C) are also vital assessments, but monitoring cardiac function is more pertinent in this scenario.

Correct Answer: D

Rationale: Using sterile technique when accessing the catheter is crucial to prevent infection in clients with a central venous catheter. This action helps maintain asepsis and reduces the risk of introducing pathogens into the catheter system. Flushing the catheter with heparin helps prevent occlusion but is not as crucial as ensuring sterile technique. Changing the dressing at the insertion site is important for assessing the site's condition but does not directly impact the administration of the antibiotic. Checking for blood return is essential to ensure proper catheter function, but sterile technique takes precedence to prevent infections.

Correct Answer: A

Rationale: The correct answer is A. A hemoglobin level of 12 g/dL is an indicator of effective erythropoietin therapy as it shows an increase in red blood cell production. Reticulocyte count (choice B) reflects the bone marrow's response to anemia but does not directly confirm the effectiveness of erythropoietin therapy. Blood pressure (choice C) and serum ferritin level (choice D) are not specific indicators of the effectiveness of erythropoietin therapy for chronic kidney disease.

Correct Answer: D

Rationale: The correct answer is D. Drinking at least 3 liters of fluid each day may be contraindicated for a client with CHF due to the risk of fluid overload. This can exacerbate heart failure symptoms and lead to complications. Options A, B, and C are all appropriate statements that demonstrate understanding of managing CHF and seeking appropriate medical attention when needed.