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Neurogenic Shock Pathophysiology Overview

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Neurogenic Shock Pathophysiology Overview

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Questions and Answers

What is the primary cause of hypotension in neurogenic shock?

Decreased cardiac output due to bradycardia

Massive vasodilation due to smooth muscle relaxation (correct)

Increased systemic vascular resistance

Impaired peripheral perfusion leading to reduced blood volume

Which of the following is NOT a direct consequence of interrupted SNS signals in neurogenic shock?

Reduced blood flow to the periphery

Impaired thermoregulation

Increased blood pressure (correct)

Decreased heart rate

The term 'transient' in relation to neurogenic shock indicates that:

The shock is always caused by a temporary interruption of SNS signals.

The symptoms of shock can last for several weeks in some cases. (correct)

The shock is always caused by a sudden event.

The shock is usually preceded by a period of neurological dysfunction.

Which of these physiological responses is DIRECTLY impacted by the disruption of baroreceptors in neurogenic shock?

<p>Bradycardia (A)</p> Signup and view all the answers

What is the primary mechanism that leads to impaired peripheral perfusion in neurogenic shock?

<p>Massive vasodilation leading to decreased systemic vascular resistance (C)</p> Signup and view all the answers

Study Notes

Neurogenic Shock Pathophysiology

Damage to the nervous system disrupts signals to blood vessels, baroreceptors, and thermoregulation.
Smooth muscle in blood vessel walls relaxes.
Systemic and peripheral vascular resistance drastically decrease due to massive vasodilation.
This leads to hypotension, decreased cardiac output, and bradycardia.
Impaired peripheral perfusion is a result.

Key Characteristics of Neurogenic Shock

Onset: Rapid, within minutes.
Duration: Can last up to three weeks.
Key Symptoms: Bradycardia (baroreceptors cannot regulate).

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Description

This quiz explores the pathophysiology and key characteristics of neurogenic shock. Understand how nervous system damage affects vascular resistance and leads to symptoms like bradycardia and hypotension. Test your knowledge on the rapid onset and implications of this condition.