What are the symptoms of increased ICP in an 18-month-old child?

Appeared in: MP CHO-2018

Explanation

In non-verbal children like an 18-month-old, neurological distress often presents as a change in behavior.
Increased irritability, restlessness, and being difficult to console are among the earliest and most sensitive indicators of rising ICP in this age group.
These behavioral changes are the pediatric equivalent of an adult reporting a headache or feeling confused.
Other early signs in infants include a high-pitched cry, poor feeding, and a bulging fontanel.

Option B: Increased ICP causes a widened pulse pressure, not a narrowing one. This is a component of Cushing's triad, a late sign.
Option C: Pressure on the oculomotor nerve (CN III) from brain swelling leads to pupil dilation and a sluggish or fixed response, not constriction.
Option D: The body's response to severe, late-stage increased ICP is bradycardia (slow heart rate), a key part of Cushing's triad.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Pediatric signs of increased intracranial pressure (ICP) as background academic context rather than a clinical decision trigger.
Recognizing subtle, non-specific signs like irritability is a critical nursing skill in pediatrics, as it can be the first warning of serious neurological decline.
A key nursing assessment for an infant with suspected ICP is to gently palpate the anterior fontanel (if open); a tense or bulging fontanel is a significant red flag.
What if? If the patient was a 10-year-old instead of an 18-month-old, they would likely be able to report a headache (often worse in the morning), nausea, and possibly blurred or double vision, in addition to showing irritability or lethargy.

How to Approach the Question

First, identify the patient's age: 18 months. This is a toddler, who has limited verbal skills. This is a major clue.
Recall that signs of illness in infants and toddlers are often behavioral and non-specific.
Consider the pathophysiology of increased ICP. Early on, the brain is compressed, causing discomfort and confusion (irritability).
Differentiate early signs from late, life-threatening signs. Cushing's triad (bradycardia, widened pulse pressure, irregular breathing) is a late finding.
Evaluate each option: 'Increased irritability' is a behavioral change and an early sign. The other options (narrowing pulse pressure, pinpoint pupils, tachycardia) are physiologically incorrect for the classic presentation of increased ICP.

Concept Tested & Keywords

Concept Tested: Pediatric signs of increased intracranial pressure (ICP)
Stem keywords: increased ICP, 18-month-old child, symptoms
Lead-in keywords: What are
Clinical cues: Patient age (18-month-old) is critical, as signs differ from adults and older children.

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E6 Nelson Textbook of Pediatrics(2024) — Volume 1 p. 594-596

E6 Nursing Brunner Adult Health 3SA Vol 2 Part 2 pp. 30-32, 38-40

Practise the full MP CHO-2018

Attempt every question from this paper in a timed mock, then review the full solution for each one.