The correct answer is D. Peripheral vasodilation.
Why D is correct (Peripheral vasodilation):
Neurogenic shock occurs due to loss of sympathetic nervous system tone, usually from a spinal cord injury. This leads to:
Widespread peripheral vasodilation
Pooling of blood in the extremities
Decreased venous return
Hypotension
Additionally, patients often present with:
Warm, dry skin (unlike other shock types)
Bradycardia (due to unopposed parasympathetic tone)
NREMT-aligned guidance states:
“Neurogenic shock results from loss of sympathetic tone leading to vasodilation.”
“Peripheral vasodilation causes hypotension and inadequate perfusion.”
Why the other options are incorrect:
A. Central vasodilation: Not a recognized defining feature; neurogenic shock primarily affects peripheral vessels.
B. Peripheral vasoconstriction: Seen in hypovolemic shock, not neurogenic shock.
C. Central vasoconstriction: Not associated with neurogenic shock.
Exact Extracts:
“Neurogenic shock is caused by loss of sympathetic tone.”
“This results in widespread peripheral vasodilation.”
“Patients may present with hypotension and bradycardia.”
[References:, NREMT EMT Education Standards – Medical Emergencies (Shock), NREMT National Continued Competency Program (NCCP) – Shock and Resuscitation, Prehospital Emergency Care (EMT) – Shock Management, ============================================, , , , ]
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