After falling from a 10 feet ladder, a patient is brought to the emergency department. The patient is alert, reports back pain, and difficulty moving the lower extremities. Which additional observation is an indication the patient may be experiencing neurogenic shock?

1. A

   Cool and pale skin

2. B

   Bradycardia

3. C

   Poor skin turgor

4. D

   Increased systolic blood pressure

Appeared in: GMCH Chandigarh - 2019

Explanation

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• Neurogenic shock is a form of distributive shock resulting from a significant spinal cord injury, typically above the T6 vertebra.
• The injury disrupts the sympathetic nervous system, which is responsible for maintaining heart rate and vascular tone.
• This leads to unopposed parasympathetic (vagal) stimulation of the heart, resulting in a slowed heart rate (bradycardia).
• Unlike most other forms of shock where tachycardia is a compensatory response, the combination of hypotension and bradycardia is a hallmark of neurogenic shock.

Why Other Options Were Wrong

• Option A: Cool and pale skin results from peripheral vasoconstriction, which is the body's compensatory response to blood loss (hypovolemic shock) or pump failure (cardiogenic shock). In neurogenic shock, vasodilation occurs, leading to warm, dry skin.
• Option C: Poor skin turgor is a sign of dehydration, reflecting a deficit in total body water. It is not an acute sign of shock related to a traumatic neurological injury.
• Option D: All forms of shock are defined by a state of circulatory collapse and inadequate tissue perfusion, which manifests as hypotension (low blood pressure), not hypertension.

Related Visual

Clinical Relevance

• Nursing practice connection: Prioritize focused assessment, early escalation, and real-time monitoring when managing Clinical manifestations of neurogenic shock in acute care settings.
• Recognizing bradycardia in a hypotensive trauma patient is a critical assessment finding that points away from the more common hypovolemic shock and towards neurogenic shock.
• This differentiation is vital because the treatments differ significantly: neurogenic shock requires vasopressors to restore vascular tone and atropine for severe bradycardia, whereas hypovolemic shock requires aggressive fluid and blood product resuscitation.
• Misdiagnosing neurogenic shock as hypovolemic shock and administering large volumes of IV fluids can lead to fluid overload and pulmonary edema, as the primary problem is vessel dilation, not volume loss.

How to Approach the Question

• First, analyze the clinical scenario. The mechanism of injury (fall from height) combined with neurological symptoms (back pain, inability to move legs) strongly suggests a spinal cord injury.
• Next, link the suspected diagnosis (spinal cord injury) to potential complications. Neurogenic shock is a major complication.
• Recall the unique pathophysiology of neurogenic shock. It's caused by a loss of sympathetic tone, which is different from all other types of shock.
• Consider how this unique mechanism affects vital signs. Loss of sympathetic tone causes vasodilation (leading to hypotension) and unopposed parasympathetic activity (leading to bradycardia).
• Evaluate each option against this specific pathophysiology. Cool/pale skin and tachycardia are signs of compensation in other shocks. Increased BP is incorrect. Bradycardia is the expected, classic sign.

Concept Tested & Keywords

• Concept Tested: Clinical manifestations of neurogenic shock
• Stem keywords: fall, back pain, difficulty moving lower extremities, neurogenic shock
• Lead-in keywords: additional observation, indication
• Clinical cues: Mechanism of injury (fall from 10 feet) and neurological deficits (difficulty moving lower extremities) are highly suggestive of a spinal cord injury.
• Negative lead-in flag: false

Question ID

QrivhQrr84_ONz8jQRKJed

Copy ID

Reference Book

E6 Nelson Textbook of Pediatrics(2024) — Volume 1 pp. 650-652, 652-654