When evaluating a client with symptoms of shock, it is important for the nurse to differentiate between neurogenic and hypovolemic shock. The symptoms of neurogenic shock differ from hypovolemic shock in that?

1. A

   In neurogenic shock, the skin is warm and dry

2. B

   In hypovolemic shock, there is a bradycardia

3. C

   In hypovolemic shock, capillary refill is less than 2 seconds

4. D

   In neurogenic shock, there is delayed capillary refill

Appeared in: NORCET -4 , 2023

Explanation

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• In neurogenic shock, the primary pathology is a loss of sympathetic tone due to a central nervous system injury.
• This loss of tone leads to massive peripheral vasodilation, causing blood to pool in the extremities.
• The increased blood flow to the skin results in a warm and flushed appearance.
• Additionally, the disruption of sympathetic pathways can lead to anhidrosis (inability to sweat), making the skin dry.

Why Other Options Were Wrong

• Option B: In hypovolemic shock, the body compensates for low blood volume by increasing the heart rate (tachycardia) to maintain cardiac output.
• Option C: In hypovolemic shock, compensatory peripheral vasoconstriction slows blood flow to the extremities, causing a delayed capillary refill time (greater than 2 seconds).
• Option D: In neurogenic shock, the widespread vasodilation leads to a normal or even brisk ('flash') capillary refill, not a delayed one.

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Clinical Relevance

• Nursing practice connection: Prioritize focused assessment, early escalation, and real-time monitoring when managing Differentiating signs and symptoms of neurogenic versus hypovolemic shock in acute care settings.
• Rapidly differentiating between neurogenic and hypovolemic shock is critical for appropriate treatment. Administering large volumes of IV fluids, the primary treatment for hypovolemic shock, can worsen fluid overload in a patient with neurogenic shock who primarily needs vasopressors to restore vascular tone.
• A key nursing assessment is to check for the classic triad of neurogenic shock: hypotension, bradycardia, and warm/dry skin, especially in any patient with a suspected spinal cord injury.
• What if? If a trauma patient with a spinal injury presents with hypotension and tachycardia, the nurse should suspect a concurrent hypovolemic shock (e.g., from internal bleeding) in addition to neurogenic shock. The tachycardia from blood loss would override the expected bradycardia of neurogenic shock.

How to Approach the Question

• First, identify the core task of the question: to find the symptom that correctly distinguishes neurogenic shock from hypovolemic shock.
• Recall the fundamental pathophysiology of each type. Neurogenic shock is caused by vasodilation from a loss of sympathetic tone. Hypovolemic shock is caused by volume loss leading to compensatory vasoconstriction.
• Think about how these opposing mechanisms (vasodilation vs. vasoconstriction) would affect the skin, heart rate, and capillary refill.
• Evaluate each option against this physiological understanding.
• Option A (warm, dry skin in neurogenic): Vasodilation brings warm blood to the surface. This is consistent. This is the likely answer.
• Option B (bradycardia in hypovolemic): Volume loss triggers a fast heart rate (tachycardia), not a slow one. This is incorrect.

Concept Tested & Keywords

• Concept Tested: Differentiating signs and symptoms of neurogenic versus hypovolemic shock.
• Stem keywords: neurogenic shock, hypovolemic shock, symptoms, differentiate
• Lead-in keywords: differ from

Question ID

QwSlt2alKzIMafOWSLj1RE

Copy ID

Reference Book

E6 Nelson Textbook of Pediatrics(2024) — Volume 1 pp. 650-652, 646-648