Which would the nurse assess in a child diagnosed with osteomyelitis? Select all that apply.

A. "That big soft spot will be covered in bone by the end of the second month" is not accurate. The closure usually occurs later than the second month.

B. "The big soft spot will close at around 24 months of age" is an overestimation of the typical closure time. It is usually closed earlier than 24 months.

C. "The big soft spot is usually closed between 12 and 18 months of age."

The anterior fontanel is the soft spot located on the baby's head, and its closure is a natural part of an infant's development. The timing of closure can vary from one child to another. However, the typical range for the closure of the anterior fontanel is between 12 and 18 months of age. This information provides a general guideline for parents while acknowledging the natural variability in child development.

D. "Babies' soft spots close at different times depending on their growth rate" is true to some extent, but providing a general range (option C) is more informative for parents.

A. Rigid abdomen: A rigid abdomen is not a common finding in HPS. However, it is more typical in conditions such as intestinal obstruction.

B. Distended neck veins: Distended neck veins are not a typical manifestation of HPS. They may be associated with other cardiovascular or respiratory issues.

C. Red currant jelly stools: Red currant jelly-like stools are not typically seen in HPS. This description is often used to describe the appearance of stools in intussusception, which is a different gastrointestinal condition.

D. Projectile vomiting.

Hypertrophic pyloric stenosis is a condition in infants where the muscle at the outlet of the stomach (pylorus) becomes thickened and obstructs the passage of food from the stomach into the small intestine. Projectile vomiting is a characteristic symptom of HPS. The vomit is forceful and seems to shoot out of the infant's mouth, typically occurring after feeding.