Correct Answer: B

Rationale: The correct answer is to monitor for signs of infection. After major surgery, one of the priority nursing assessments is to watch for signs of infection, such as increased temperature, redness, swelling, or drainage at the surgical site. While providing analgesia is important for pain management, monitoring for infection takes precedence as it can lead to severe complications if not detected early. Assessing the surgical site for bleeding is crucial but is usually more relevant immediately after surgery. Monitoring the patient's vital signs is essential, but the specific focus on infection assessment is crucial in the immediate postoperative period.

Correct Answer: B

Rationale: To calculate the IV rate, divide the total volume by the total time in hours. In this case, 1 g in 250 ml is to be infused over 6 hours. Therefore, 250 ml / 6 hr = 42 ml/hr. This means the IV pump should be set to run at 42 ml/hr. Choices A, C, and D are incorrect as they do not accurately calculate the infusion rate based on the provided information.

Correct Answer: D

Rationale: Proper documentation of chest tube output is crucial in the care of a patient with a chest tube. While ensuring the chest tube is secured and functioning, checking for air leaks, and maintaining drainage below chest level are important aspects of care, documentation of output is essential for monitoring the patient's condition, assessing the effectiveness of treatment, and ensuring appropriate interventions if needed.

Correct Answer: B

Rationale: The correct answer is B: Hydrocodone bitartrate. According to the Controlled Substances Act, hydrocodone bitartrate is classified as a Schedule II controlled substance due to its high potential for abuse and addiction. Diazepam (Choice C) and morphine (Choice D) are classified as Schedule IV and Schedule II controlled substances, respectively. Buprenorphine hydrochloride (Choice A) is classified as a Schedule III controlled substance. Therefore, hydrocodone bitartrate should be included under Schedule II medications when discussing the categories regulated under the Controlled Substances Act.

Correct Answer: C

Rationale: The correct answer is C: Oxygen saturation. Following abdominal surgery, the priority assessment is to ensure adequate oxygenation. Monitoring oxygen saturation is crucial as the client may be at risk of respiratory complications due to the effects of anesthesia, pain medications, and the surgical procedure itself. Assessing urinary output is important for monitoring kidney function but is not the priority immediately postoperatively. Pain level assessment is essential for the client's comfort but does not take precedence over ensuring oxygen saturation. Checking the abdominal dressing is important for wound assessment, but ensuring adequate oxygenation is the priority in the immediate postoperative period.