A nurse is caring for an infant who has pertussis. Which of the following precautions should the nurse implement?

Choice C reason: The infant makes babbling sounds. At 6 months of age, it is typical for infants to engage in babbling sounds. Babbling is a significant milestone in language development during infancy. It involves the repetition of consonant-vowel combinations (e.g., "ba-ba,”. "ma-ma") and is an essential precursor to later language skills, such as forming words and sentences. The nurse should expect the 6-month-old infant to be making these babbling sounds as part of their normal development.

Choice A reason:

The infant has a pincer grasp. A pincer grasp is the ability to pick up small objects using the thumb and index finger. This fine motor skill typically develops around 9 to 12 months of age. At 6 months old, infants have not yet acquired the pincer grasp. Therefore, the nurse should not expect the 6-month-old infant to demonstrate this skill during the assessment.

Choice D reason:

The infant crawls on their hands and knees. Crawling is a gross motor skill that usually emerges between 7 to 10 months of age. While some infants may start crawling earlier or later, it is not a skill that is typically present in a 6-month-old. Therefore, the nurse should not anticipate the 6-month-old infant to be crawling on their hands and knees during the assessment.

Choice B reason:

The infant drops objects with the expectation of someone picking them up. This behavior, known as "object permanence,”. is a cognitive milestone that develops around 8 to 12 months of age. At 6 months old, infants have not yet fully developed this concept. They might drop objects as part of their exploratory behavior, but they do not yet understand the expectation of someone picking them up. Therefore, the nurse should not expect the 6- month-old infant to exhibit this specific behavior during the assessment.

Abdominal distention. Choice A reason:

Abdominal distention is a common manifestation of Hirschsprung's disease in infants. This condition is characterized by the absence of ganglion cells in the distal segment of the colon, leading to a functional obstruction. The absence of ganglion cells causes the affected part of the colon to become narrow and unable to relax, resulting in a buildup of stool and gas, leading to abdominal distention.

Choice B reason:

Steatorrhea, which is the presence of fatty, bulky, and foul-smelling stools, is not typically associated with Hirschsprung's disease. This manifestation is more commonly seen in conditions affecting the pancreas, liver, or small intestine, where the digestion and absorption of fats are impaired.

Choice C reason:

Blood-tinged emesis (vomiting) is not a typical manifestation of Hirschsprung's disease. This symptom is more commonly associated with gastrointestinal bleeding, which can be caused by various factors such as ulcers, esophageal varices, or gastritis.

Choice D reason:

Dysphagia, which refers to difficulty swallowing, is also not a characteristic manifestation of Hirschsprung's disease. Dysphagia is more commonly seen in conditions affecting the esophagus or throat, such as esophageal strictures or neurological disorders affecting swallowing reflexes.