Examkin

Question

Difficulty: MediumPhysiological Adaptation

A client is receiving care in the trauma step-down unit after sustaining a T4 complete spinal cord injury. When evaluating the client for potential hemodynamic complications, which assessment finding specifically indicates that the client is developing neurogenic shock rather than hemorrhagic shock?

  1. Apical heart rate of 52 beats per minute accompanied by warm, dry skinAnswer
  2. B
    Blood pressure of 88/72 mm Hg accompanied by cool, clammy extremities
  3. C
    Agitation and restlessness accompanied by a rapidly narrowing pulse pressure
  4. D
    Shallow respirations of 26 breaths per minute accompanied by an arterial pH of 7.31

Answer

The finding of an apical heart rate of 52 beats per minute accompanied by warm, dry skin indicates neurogenic shock.
Neurogenic shock results from the disruption of sympathetic pathways in the spinal cord (typically injuries above T6). This loss of sympathetic tone allows parasympathetic activity to dominate, causing significant bradycardia rather than the tachycardia seen in other shock states. Furthermore, the loss of vascular tone causes massive vasodilation, which pools blood in the periphery and makes the skin feel warm and dry, contrasting sharply with the cool, clammy skin caused by compensatory vasoconstriction in hemorrhagic shock.

Step-by-Step Solution

1
Analyze the pathophysiology of the specific injury.
A T4 spinal cord injury disrupts the sympathetic nervous system pathways, leaving the parasympathetic nervous system (vagus nerve) unopposed.
Understanding the neurological deficits is required to anticipate physiological adaptations and potential shock states.
2
Compare the clinical manifestations of neurogenic shock and hemorrhagic shock.
Neurogenic shock presents with bradycardia and vasodilation (warm, dry skin). Hemorrhagic shock presents with tachycardia and vasoconstriction (cool, clammy skin, narrowing pulse pressure).
Differentiating these shock states is essential because their underlying mechanisms and treatments are completely different.
3
Evaluate the options against the clinical features of neurogenic shock.
The option presenting bradycardia and warm, dry skin perfectly matches the distributive profile of neurogenic shock.
This confirms the correct physiological indicator for the specific complication.

Key Concept

Neurogenic shock is characterized by the loss of sympathetic vascular tone, resulting in massive vasodilation, hypotension, and bradycardia, differentiating it from hypovolemic or hemorrhagic shock which present with tachycardia and vasoconstriction.
Estimated Time:1m 15s
Rate this question

Topics

Physiological Adaptation

More questions from this topic