The pediatric nurse is meeting with a group of preschoolers family members to discuss various health topics. The nurse determines the sexual development session is successful after overhearing which comment by one of the participants?

A.While cystic fibrosis is characterized by a high concentration of sodium chloride in sweat due to defective chloride channels, this is not the cause of the barrel chest and clubbing of the fingers.

B.The barrel chest and clubbing of the fingers are often seen in children with cystic fibrosis due to chronic hypoxia (lack of oxygen). Chronic lung infections, airway obstruction, and respiratory insufficiency associated with cystic fibrosis lead to prolonged low oxygen levels, which can result in these physical changes.

C.Decreased respiratory capacity, often due to the chronic respiratory issues associated with cystic fibrosis, can result in a barrel chest (increased chest diameter due to air trapping) and clubbing of the fingers (a sign of chronic hypoxia).

D.Decreased respiratory capacity (due to thick mucus and airway obstruction) does contribute to chronic respiratory issues in cystic fibrosis, but the direct cause of the barrel chest and clubbing is the chronic lack of oxygen (hypoxia) rather than decreased capacity alone. The changes in the chest and fingers are a result of prolonged oxygen deprivation.

A. The deciduous teeth falling out:

The falling out of deciduous (baby) teeth is a natural part of early childhood development and is not specifically indicative of adolescence. The loss of deciduous teeth usually occurs before the age of 12.

B. The beginning of puberty:

Puberty is the period of physical and sexual development that marks the transition from childhood to adolescence. It involves the development of secondary sexual characteristics, such as breast development in girls and facial hair growth in boys, along with other physical changes.

C. The child becoming self-supported:

Becoming self-supported is a broad concept that can occur at various stages of development and is not a specific marker of the beginning of adolescence. Adolescents may gain increasing independence, but this is a gradual process.

D. The fine motor skills fully developed:

Fine motor skills typically develop during early childhood, and the full development of these skills is not a specific marker for the beginning of adolescence. Fine motor skills involve the coordination of small muscle movements and are important for tasks like writing and drawing.