The patient arrived at the emergency department, and vital signs were taken.

الشرح

Core Concept: Neurogenic shock occurs due to loss of sympathetic nervous system tone, typically following a spinal cord injury above T6. The loss of sympathetic innervation causes massive peripheral vasodilation (leading to hypotension) and unopposed parasympathetic (vagal) activity on the heart (leading to bradycardia). This is distinct from hypovolemic shock, which presents with tachycardia.

Clinical Presentation:

• Hypotension (systolic BP <90 mmHg)
• Bradycardia (heart rate <60 bpm)
• Warm, dry, flushed skin below the level of injury (due to vasodilation)
• Absence of compensatory tachycardia
• Potential respiratory compromise if injury is above C5
• Complications: cardiovascular collapse, respiratory failure, hypothermia

Diagnosis:

• First-line diagnostic plan: Clinical assessment of vital signs showing the classic triad of hypotension, bradycardia, and warm/dry skin. Neurological examination to determine the level of spinal cord injury.
• Most accurate (gold standard) test: MRI or CT scan of the spine to identify the level and extent of spinal cord injury. Hemodynamic monitoring with arterial line and central venous pressure (CVP).

Management:

• Acute management: Maintain airway, breathing, and circulation. Administer IV fluids (crystalloids) cautiously. Administer vasopressors (norepinephrine or phenylephrine) to restore vascular tone. Atropine for symptomatic bradycardia. Immobilize the spine. Maintain mean arterial pressure (MAP) >85 mmHg for 7 days to optimize spinal cord perfusion.
• Gold standard long-term management: Multidisciplinary spinal cord injury management including neurosurgical consultation, rehabilitation, DVT prophylaxis, respiratory therapy, and psychosocial support. Monitor for autonomic dysreflexia in chronic spinal cord injury.