Correct Answer: C

Rationale: The correct answer is C: Acute pain. The patient's right femur fracture would likely cause significant pain. Treating the pain is a priority to ensure the patient's comfort and promote healing. Posttrauma syndrome (A) is more applicable for patients experiencing emotional distress following a traumatic event. Constipation (B) may be a concern due to immobility but is not as immediate as managing pain. Anxiety (D) may be present but addressing the acute pain would likely alleviate some anxiety as well.

Correct Answer: B

Rationale: The correct answer is B because encouraging the intake of low-sodium liquids like coffee or tea can worsen hyponatremia. Hyponatremia is a condition characterized by low sodium levels in the blood, so encouraging low-sodium liquids would further dilute the sodium levels. The other choices are correct interventions for hyponatremia: A) assessing for symptoms helps in monitoring the patient's condition, C) monitoring neurological status is crucial as hyponatremia can lead to neurological complications, and D) restricting tap water intake helps in managing fluid intake and preventing further dilution of sodium levels.

Correct Answer: C

Rationale: Rationale: Choice C is the correct answer because drinking lots of water at night actually helps prevent UTIs by flushing out bacteria from the urinary tract. Holding the urge to urinate (Choice A) can increase the risk of UTIs as bacteria can multiply in stagnant urine. Insertion of instruments and catheters (Choice B) can introduce bacteria, leading to infection. Unhygienic cleaning after defecation (Choice D) can also introduce bacteria to the urinary tract, causing UTIs. Therefore, Choice C is the exception as it does not contribute to the common causes of UTIs.

Correct Answer: A

Rationale: The correct answer is A: Secure the cannula with tape. This is the last step in inserting an IV cannula to ensure it stays in place and prevents dislodgement or movement. Securing the cannula with tape helps maintain proper positioning and prevents accidental removal. Documenting the insertion site, date, and type of cannula used (B) is important but typically done earlier in the process. Assessing the site (C) should be done before securing the cannula to ensure proper placement. Placing a sterile dressing over the insertion site (D) is also important, but it usually comes before securing the cannula with tape to maintain a clean and sterile environment.

Correct Answer: D

Rationale: The correct answer is D because monitoring for signs of infection, air embolus, and leakage/puncture are crucial in caring for a patient with a central venous line to prevent serious complications. Infections can lead to sepsis, air embolus can cause respiratory distress, and leakage/puncture can result in hemorrhage or damage to surrounding tissues. A: While a complete blood count and electrolytes may be important for monitoring the patient's overall health, they are not specific to the central venous line care. B: Regular chest x-rays are not necessary unless there are specific indications of line malposition or complications. C: Continuous infusion at a keep-vein-open rate is a standard practice but does not address the critical aspects of central line care mentioned in option D. Therefore, monitoring for signs of infection, air embolus, and leakage/puncture is the most essential component of the plan of care for a patient with a central venous line.