A nurse is collecting data from an infant who has developmental dysplasia of the hip (DDH). Which of the following findings should the nurse expect?

A. Pulmonary function test:

Pulmonary function tests (PFTs) assess lung function by measuring airflow, lung volume, and gas exchange. While PFTs can provide valuable information about respiratory function, they are not specific to cystic fibrosis and may show abnormalities consistent with various respiratory conditions. However, PFTs are often performed in individuals with cystic fibrosis to monitor lung function over time and assess response to treatment. They are not considered the most definitive test for diagnosing cystic fibrosis.

B. Sweat chloride test:

This option is correct. The sweat chloride test is considered the most definitive diagnostic test for cystic fibrosis. It measures the concentration of chloride in sweat, which is typically elevated in individuals with cystic fibrosis due to defective chloride transport in sweat glands. A sweat chloride concentration above a certain threshold (usually ≥60 mmol/L) is diagnostic of cystic fibrosis, particularly when confirmed with repeat testing.

C. Stool fat content analysis:

Stool fat content analysis evaluates fat absorption and fecal fat excretion, which may be impaired in individuals with cystic fibrosis due to pancreatic insufficiency. However, while stool fat content analysis can provide supportive evidence of malabsorption in cystic fibrosis, it is not considered the most definitive test for diagnosing the condition. Stool fat content analysis is often used in conjunction with other diagnostic tests to assess pancreatic function and nutritional status in individuals with cystic fibrosis.

D. Sputum culture:

Sputum culture involves culturing respiratory secretions to identify bacterial pathogens, which can be useful for diagnosing respiratory infections in individuals with cystic fibrosis. However, sputum culture is not specific to cystic fibrosis and may show similar findings in other respiratory conditions. While respiratory cultures are important for guiding treatment in cystic fibrosis, they are not considered the most definitive test for diagnosing the condition.

A. Keep the infant in a side-lying position.

This intervention is not appropriate following cleft palate repair surgery. Placing the infant in a side-lying position may increase the risk of trauma to the surgical site and disrupt the healing process. It's important to follow the surgeon's recommendations regarding positioning, which typically involves keeping the infant in an upright position to minimize strain on the surgical site.

B. Remove elbow restraints while the infant is sleeping.

Elbow restraints are often used postoperatively to prevent the infant from accidentally touching or rubbing the surgical site, which could disrupt wound healing or cause discomfort. Removing the restraints while the infant is sleeping may increase the risk of unintended movement or injury to the surgical site. Therefore, it is not appropriate to remove the restraints while the infant is sleeping.

C. Administer pain medication around the clock for the first 72 hours.

This intervention is appropriate. Pain management is an essential component of postoperative care following cleft palate repair surgery. Administering pain medication around the clock helps to maintain consistent pain relief and prevent spikes in discomfort. Pain management should be tailored to the individual needs of the infant and may include both non-pharmacological measures and analgesic medications.

D. Feed the infant half-strength formula for the first 48 hours.

This intervention is appropriate. Following cleft palate repair surgery, feeding may need to be adjusted to accommodate the infant's comfort and ensure adequate nutrition while minimizing the risk of aspiration. Feeding the infant half-strength formula or other appropriate feeding methods as recommended by the healthcare provider can help prevent stress on the surgical site and reduce the risk of complications such as aspiration pneumonia.