Correct Answer: A

Rationale: Substernal retractions are a concerning sign of respiratory distress and can indicate acute chest syndrome, a severe complication of sickle-cell anemia. It results from vaso-occlusion in the pulmonary vasculature, leading to impaired oxygenation. Prompt reporting of this symptom is crucial for early intervention to prevent further complications. Hematuria, a high temperature, and sneezing are not specific manifestations of acute chest syndrome and would not warrant immediate notification to the provider in this context.

Correct Answer: B

Rationale: Administering the feeding over 30 minutes helps prevent complications such as aspiration. Placing the child in an upright position after the feeding is recommended to reduce the risk of aspiration. It is essential to change the feeding bag and tubing every 3 days to maintain asepsis and prevent infections. Warming the formula in a warm water bath is the correct method as using a microwave can create hot spots that may burn the child's mouth or throat.

Correct Answer: A

Rationale: Individuals with obsessive-compulsive disorder often feel compelled to perform rituals to alleviate anxiety. Allowing the client enough time to perform these rituals can help reduce their anxiety levels and promote a sense of control. Providing autonomy in scheduling activities can also empower the client and enhance their sense of independence. Discouraging exploration of irrational fears may increase anxiety and worsen symptoms. Negative reinforcement for ritualistic behaviors is not recommended as it can be counterproductive and reinforce the behavior.

Correct Answer: B

Rationale: When a client requests the creation of a living will, the nurse's priority is to evaluate the client's understanding of life-sustaining measures. This involves ensuring that the client comprehends the implications of various life-sustaining interventions and can make informed decisions about their care preferences in the event they are unable to communicate them later. It is crucial for the nurse to assess the client's comprehension to ensure that the living will accurately reflects the client's wishes and values.

Correct Answer: B

Rationale: Thrombophlebitis, which is inflammation of a vein with the formation of a clot, is a contraindication to the use of oral contraceptives due to an increased risk of thromboembolism. Clients with a history of thrombophlebitis or thromboembolic disorders should avoid oral contraceptives to prevent further complications like deep vein thrombosis or pulmonary embolism.