Correct Answer: B

Rationale: After a total knee replacement, early ambulation is crucial for promoting circulation and preventing complications like thrombosis. Bed rest should be avoided as it can increase the risk of complications. Range of motion exercises are important but should be performed gradually and not excessively. Leg elevation is beneficial for reducing swelling but should not be the primary activity level encouraged immediately after surgery.

Correct Answer: B

Rationale: In cases of possible child abuse, discrepancies between the accounts given by the child and the parent are critical indicators. This inconsistency could suggest that the injury was not accidental and may be a result of abuse. Looking at the floor while answering questions or having abrasions on the body can be concerning but are not as direct indicators of abuse as conflicting stories between the child and the parent.

Correct Answer: D

Rationale: The correct answer is D: All of the above. Providing comprehensive discharge instructions covering signs of infection to monitor for, pain management techniques, activity restrictions, and safety measures is crucial after a major surgical procedure. Each of these components plays a vital role in the client's recovery and well-being. It is important for the client to understand how to identify signs of infection, manage pain effectively, and adhere to activity restrictions to prevent complications and ensure a smooth recovery process. While each instruction is important on its own, combining all aspects into the discharge teaching ensures that the client has a holistic understanding of their post-operative care, empowering them to take charge of their health and know when to seek further assistance if needed. Choices A, B, and C are essential components of discharge teaching and should all be included to provide the client with comprehensive care instructions.

Correct Answer: A

Rationale: Performing hand hygiene before and after handling the catheter is crucial in preventing catheter-associated urinary tract infections (CAUTI). This practice helps minimize the risk of introducing harmful microorganisms into the urinary tract. Changing the catheter every 72 hours is not recommended unless clinically indicated as it can increase the risk of infection. Applying antibiotic ointment at the insertion site is not a standard practice and may contribute to antibiotic resistance. Irrigating the catheter daily is unnecessary and can introduce pathogens into the urinary tract, increasing the risk of infection.

Correct Answer: C

Rationale: Rebound tenderness at McBurney's point is a classic sign of appendicitis. This symptom is due to irritation of the peritoneum when pressure is released during palpation. Right upper quadrant pain (Choice A) is more commonly associated with gallbladder issues. Nausea and vomiting (Choice B) can occur in various abdominal conditions and are not specific to appendicitis. Hematuria (Choice D) is the presence of blood in the urine and is not a typical symptom of appendicitis.