Correct Answer: A

Rationale: Direct observation of behavior is the best way for the nurse to evaluate whether the client is able to set up and administer a nebulizer treatment. By directly observing the client, the nurse can assess the client's understanding and ability in performing the necessary steps correctly and safely. This approach allows for real-time evaluation and correction if needed, ensuring that the client can effectively manage their nebulizer treatment at home. Written or oral descriptions may not accurately reflect the client's actual competency in performing the task, and relying on the client's self-report during a follow-up appointment may not provide a complete picture of their ability.

Correct Answer: C

Rationale: Sulfasalazine can cause photosensitivity, making the patient more prone to sunburn. Therefore, it is important for patients taking sulfasalazine to use sunscreen to protect their skin from harmful UV rays. This can help prevent sunburn and skin damage while on the medication. It is not necessary to take vitamin C with this drug, take it on an empty stomach, or limit fluid intake to 1500 mL per day.

Correct Answer: A

Rationale: The nurse would question the order for a D-dimer test in this case. A D-dimer test is a blood test used to help rule out or diagnose blood clots. However, in a child with a fractured femur complaining of sudden chest pain and difficulty breathing, the symptoms suggest the possibility of a pulmonary embolism (PE). In this scenario, a D-dimer test may not be necessary because the clinical presentation warrants more advanced imaging studies such as V/Q scans, CT pulmonary angiography, or MR pulmonary angiography to definitively diagnose or rule out a PE. Therefore, the focus should be on imaging studies rather than a D-dimer test in this situation.

Correct Answer: B

Rationale: Tetralogy of Fallot (TOF) involves four cardiac defects, as described in option B: pulmonic stenosis, right ventricular hypertrophy, ventricular septal defect, and an overriding aorta. These four defects result in mixing of oxygen-poor and oxygen-rich blood in the heart, leading to decreased oxygen levels in the blood that is pumped to the body. This characteristic results in cyanosis (blue discoloration of the skin). Providing accurate information about the specific defects involved in TOF helps parents understand the complexity and potential complications associated with their child's condition. This knowledge can aid in their ability to recognize symptoms and seek timely medical intervention when needed.

Correct Answer: A

Rationale: Preeclampsia is a pregnancy complication characterized by high blood pressure and signs of damage to other organ systems, most often the liver and kidneys. Placental dysfunction is believed to be the main cause of preeclampsia. In a normal pregnancy, blood vessels in the placenta develop to supply the fetus with nutrients and oxygen. In preeclampsia, these blood vessels don't develop or function properly, leading to inadequate blood flow and reduced supply of nutrients to the placenta. This can result in high blood pressure and affect the function of other organs.