You have learned that in babies and children with developmental dysplasia (dislocation) of the hip (DDH), the hip joint has not formed normally. Which of the following is the most common form of DDH?

Correct Answer: A

Rationale: Acetabular dysplasia is the most common form of developmental dysplasia of the hip (DDH). It is characterized by an underdeveloped or shallow socket (acetabulum) in the hip joint, which can lead to instability and predispose the hip to dislocation. In DDH, the abnormal development of the hip joint can range from mild acetabular dysplasia to complete dislocation. Acetabular dysplasia is often present from birth or develops during infancy and can lead to long-term consequences if not properly managed. Early detection and treatment of acetabular dysplasia are crucial to prevent complications such as hip dislocation and osteoarthritis later in life.

Correct Answer: D

Rationale: Oxygen desaturation of 2-30% is too low to define mild-to-moderate sleep apnea.

Correct Answer: A

Rationale: It is essential for a nurse to ensure that the client is actively involved in the development of the plan for proportionate distribution of restricted fluid volumes because it promotes the client's compliance with therapy. When the client participates in creating the plan, they are more likely to understand the importance of following it and be motivated to adhere to the recommended fluid restrictions. This active involvement fosters a sense of ownership and responsibility, leading to better treatment outcomes and improved overall health.

Correct Answer: C

Rationale: The statement that best describes the infant's physical development that a nurse should expect to find is that birth weight doubles by age 5 months and triples by age 1 year. This characteristic growth pattern is typical in the first year of life. Infants usually regain their birth weight by around 2 weeks of age, double it by about 5 months, and triple it by 1 year. This steady growth reflects the healthy development of the infant and is an important marker of overall well-being and nutrition. It is a key aspect that healthcare providers, including nurses, monitor closely to ensure the infant is thriving.

Correct Answer: B

Rationale: Concomitant chemotherapy and radiotherapy are essential to manage ruptured Wilms tumor and reduce the risk of dissemination.