Which of the following is a common sign of increased intracranial pressure in a 6-month-old infant?
Explanation & Rationale
Increased intracranial pressure (ICP) in infants manifests differently than in adults due to the presence of open cranial sutures. Recognizing these anatomical differences is essential for the early detection of neurological compromise resulting from hydrocephalus, hemorrhage, or infection. Choice A rationale Dry skin is a sign of dehydration or integumentary conditions rather than neurological distress. In cases of high ICP, skin might actually appear tense or shiny over the scalp due to the stretching caused by an enlarging head. Choice B rationale Increased ICP typically causes nausea, vomiting, and irritability, leading to a decreased appetite and poor feeding. An infant with neurological pressure is usually too distressed or lethargic to demonstrate an increased desire for nutritional intake. Choice C rationale While tachycardia can occur early, the classic sign of late-stage increased ICP is bradycardia, part of Cushing's triad. An elevated heart rate is a non-specific finding often related to pain, fever, or dehydration rather than ICP. Choice D rationale In infants, the anterior fontanel remains open until 12 to 18 months. When intracranial pressure rises, the soft spot bulges outward as it compensates for the increased volume of fluid or brain tissue within the distensible cranium..