A nurse posted in the Neurosurgery ICU was caring for injury patient. Which of the following nursing activities shown to potentially increase intracranial pressure?

1. A

   Applying therapeutic touch

2. B

   Speaking softly in the unit

3. C

   Head of the bed elevated to 30°

4. D

   Endotracheal suctioning

Appeared in: DSSSB 6 September 2024

Explanation

• Endotracheal suctioning is a noxious stimulus that triggers the cough and gag reflex, a physiological response that increases intracranial pressure (ICP).
• The act of coughing significantly raises intrathoracic pressure, which in turn impedes venous drainage from the brain, causing a temporary increase in intracranial blood volume and pressure.
• The procedure can also cause transient hypoxia or hypercapnia (increased CO2), both of which are potent cerebral vasodilators that further contribute to elevated ICP.
• Due to these effects, suctioning is performed cautiously and only when necessary, with measures like pre-oxygenation and limiting the duration of the procedure.

Why Other Options Were Wrong

• Option A: Applying therapeutic touch is a comfort measure intended to calm the patient and reduce stress. Lowering stress helps to prevent elevations in ICP.
• Option B: Speaking softly is part of maintaining a low-stimulus environment. This is a standard nursing intervention to prevent agitation and stress, which are known to increase ICP.
• Option C: Elevating the head of the bed to 30 degrees is a primary intervention to decrease ICP. This position uses gravity to promote venous outflow from the brain.

Related Visual

Clinical Relevance

• Nursing practice connection: Prioritize focused assessment, early escalation, and real-time monitoring when managing Nursing interventions and their effect on intracranial pressure (ICP) in acute care settings.
• Nurses must critically balance the need for airway clearance with the significant risk of raising ICP. Suctioning should be performed only when clinically necessary (e.g., visible secretions, adventitious breath sounds), not routinely.
• Key safety measures for suctioning a patient with high ICP include pre-oxygenating with 100% O2, limiting each suction pass to less than 10-15 seconds, and allowing ICP to return to baseline before another pass.
• Spacing out nursing care is crucial. Clustering activities like turning, bathing, and suctioning can have a cumulative effect, causing a sustained and dangerous elevation in ICP.

How to Approach the Question

• First, identify the core clinical question: which action increases intracranial pressure (ICP)?
• Second, recall the basic pathophysiology of ICP. Pressure inside the rigid skull increases when the volume of its contents (brain tissue, blood, or cerebrospinal fluid) increases, or when venous outflow is obstructed.
• Third, evaluate each option's effect on this principle.
• Analyze options A (therapeutic touch) and B (speaking softly). These are calming measures designed to reduce stress and stimuli, which would help lower or stabilize ICP, not increase it.
• Analyze option C (HOB at 30°). This is a standard, evidence-based intervention to promote venous outflow from the brain, which actively decreases ICP.
• Analyze option D (suctioning). This procedure is a known noxious stimulus that causes coughing. Coughing increases pressure in the chest, which obstructs venous return from the head, thereby increasing ICP.

Concept Tested & Keywords

• Concept Tested: Nursing interventions and their effect on intracranial pressure (ICP).
• Stem keywords: Neurosurgery ICU, injury patient, intracranial pressure, nursing activities
• Lead-in keywords: increase
• Clinical cues: The care setting changes urgency, monitoring level, and the expected nursing action.
• Negative lead-in flag: false

Question ID

QL30h4QMw-5WIhFRUAZFsK

Copy ID

Reference Book

E6 Nursing Brunner Adult Health 3SA Vol 2 Part 2 pp. 37-39, 34-36, 41-43