A patient with a severe head injury begins to exhibit Cushing's triad. The nurse would assess for which combi… - NORCET 9 Prelims-2025

NORCET 9 Prelims-2025

Medical & Surgical Nursing

Easy

Appeared in: NORCET 9 Prelims-2025

Explanation

Cushing's triad is a classic, late sign of increased intracranial pressure (ICP), often seen in patients with severe head injuries.
It is characterized by a specific combination of three vital sign changes: hypertension (specifically a rising systolic pressure and widening pulse pressure), bradycardia (a slowing heart rate), and irregular respirations (such as Cheyne-Stokes breathing or bradypnea).
This triad indicates that the brainstem is under significant pressure, a condition that is a neurological emergency requiring immediate intervention to prevent brain herniation.

Option B: This option describes hypotension and tachycardia, which are the classic signs of hypovolemic or distributive shock, not Cushing's triad. Kussmaul respirations are deep, labored breaths typically associated with metabolic acidosis, such as in diabetic ketoacidosis.
Option C: While hypertension and Cheyne-Stokes respirations can be part of Cushing's triad, tachycardia (a fast heart rate) is incorrect. The triad is defined by bradycardia (a slow heart rate) as a reflex response to the severe hypertension.
Option D: This option incorrectly lists hypotension. The primary circulatory sign in Cushing's triad is severe hypertension as the body tries to perfuse the brain. While bradycardia and apnea (a form of irregular respiration) are correct components, the presence of hypotension makes this option incorrect.

Visual 1: Flowchart - A flowchart illustrating the pathophysiology of Cushing's triad, starting from 'Increased ICP' and showing the cascade of events leading to hypertension, bradycardia, and irregular respirations.
Visual 2: Comparison Table - A table comparing the vital signs seen in Cushing's Triad versus Shock (Hypovolemic/Septic). This would highlight the opposing changes in blood pressure and heart rate.

Clinical Relevance

Nursing practice connection: Use the key finding related to Identification of the components of Cushing's triad as a sign of increased intracranial pressure to guide bedside assessment, documentation, and the next nursing action.
Recognizing Cushing's triad is a critical nursing assessment skill. It is a neurological emergency that signals impending brain herniation. The nurse must report these findings to the physician immediately for aggressive ICP management.
Nursing care for a patient at risk for increased ICP includes frequent neurological assessments (GCS, pupils, motor function), vital sign monitoring, maintaining the head of the bed at 30 degrees, and minimizing stimuli that could raise ICP (like straining or clustering care activities).
What if? - If the patient with a head injury presented with hypotension and tachycardia instead, the priority would shift. This pattern suggests hypovolemic shock (e.g., from internal bleeding) rather than isolated increased ICP. The immediate intervention would be fluid resuscitation and finding the source of bleeding, as hypotension will critically compromise cerebral perfusion.

How to Approach the Question

First, identify the key term in the question: 'Cushing's triad'. This is a specific clinical sign that you should recall the definition for.
Recall the three components of Cushing's triad: Hypertension (with widening pulse pressure), Bradycardia, and Irregular Respirations.
Systematically evaluate each option against this three-part definition.
Option A matches all three components.
Eliminate Option B because it has hypotension and tachycardia, the opposite of what's expected.
Eliminate Option C because it has tachycardia instead of bradycardia.

Concept Tested & Keywords

Concept Tested: Identification of the components of Cushing's triad as a sign of increased intracranial pressure.
Stem keywords: severe head injury, Cushing's triad, vital signs
Lead-in keywords: assess for which combination
Clinical cues: A patient with a severe head injury is at high risk for developing increased intracranial pressure (ICP).

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