CCRN · Musculoskeletal, Neurological, Behavioral/Psychosocial · 7 min read
Spinal Cord Injury and Spinal Surgery
- Differentiate the pathophysiology, clinical presentations, and management priorities of incomplete cord syndromes, spinal shock, neurogenic shock, and autonomic dysreflexia.
- Implement critical care nursing priorities for acute traumatic spinal cord injury, including spinal motion restriction, respiratory and hemodynamic support, and secondary complication prevention.
- Identify postoperative spinal surgery emergencies, such as epidural hematoma, retropharyngeal hematoma, and cerebrospinal fluid leaks, and advocate rapidly for urgent interventions.
Acute Traumatic Injury, Incomplete Cord Syndromes, and Spinal Shock
For suspected or confirmed acute traumatic SCI, maintain spinal motion restriction until an authorized provider determines spinal stability and orders changes to precautions based on appropriate evaluation and imaging. When an uncleared acute spinal cord injury patient must be turned, the nurse directs a coordinated team maneuver that maintains neutral spinal alignment and adheres strictly to local spinal precautions. If emergency endotracheal intubation is required in an uncleared cervical spine, the nurse or team member maintains manual in-line stabilization while the anterior portion of the cervical collar is temporarily removed to permit direct airway management.
Respiratory compromise varies predictably with the anatomical level of injury. Cervical injuries above the phrenic motor neurons can cause diaphragmatic paralysis; injuries involving C3, C5 cause variable diaphragmatic weakness, so nurses should closely trend respiratory effort, vital capacity, cough, and ventilation. In contrast, high thoracic spinal cord injuries between T1 and T6 spare the diaphragm but impair intercostal and abdominal muscle function. This impairment leads to reduced vital capacity and an ineffective cough, predisposing the patient to secretion retention and hypoventilation.
Incomplete spinal cord syndromes have characteristic motor and sensory patterns that reflect the tracts affected, injury level, and evolving effects of the injury. Serial neurological examinations using a standardized motor and sensory dermatome tool are essential to detect ascending spinal cord edema or worsening injury early, allowing the bedside nurse to recognize subtle deterioration before irreversible deficits occur.
Spinal shock is an immediate, temporary suppression of reflex activity below the level of an acute spinal cord injury, typically manifesting as flaccidity and loss of reflexes, with specific motor and sensory findings depending on the underlying injury. The return of reflexes below the injury level, often beginning with the bulbocavernosus reflex, signals that spinal shock is resolving; spasticity may develop later in the clinical course.
| Syndrome | Motor Findings | Sensory Findings |
|---|---|---|
| Central Cord Syndrome | Motor weakness more pronounced in upper extremities than lower extremities | Variable sensory impairment |
| Anterior Cord Syndrome | Loss of motor function below injury level | Loss of pain and temperature sensation below injury; vibration and proprioception remain intact |
| Brown-Séquard Syndrome | Ipsilateral loss of voluntary motor function below injury level | Ipsilateral loss of proprioception; contralateral loss of pain and temperature sensation |
| Posterior Cord Syndrome | Voluntary motor function remains preserved | Loss of proprioception, vibration, and fine touch below injury level |
Common mistakes
- Assuming autonomic dysreflexia cannot occur early after injury; it is more common after spinal shock resolves, but compatible symptoms and a rise in blood pressure warrant assessment regardless of time since injury.
- Relying on the presence of severe surgical site pain to suspect an epidural hematoma, overlooking that pain may not always be present when new motor or sensory deficits appear.
- Assuming that all shock states present with cold, clammy skin; neurogenic shock typically causes warm, dry extremities from loss of sympathetic vasomotor tone, unless concurrent hypovolemia exists.
- Believing a halo sign on a dressing is definitive proof of a cerebrospinal fluid leak, rather than obtaining a fluid sample for beta-2 transferrin testing when available.
Key points
- Maintain spinal motion restriction until cleared by an authorized provider; use coordinated team maneuvers for turns and manual in-line stabilization during urgent airway management.
- High cervical injuries (C3, C5) threaten diaphragmatic innervation, whereas high thoracic injuries (T1, T6) impair intercostals and abdominal muscles, diminishing vital capacity and cough effectiveness.
- Support MAP to provider-ordered goals (typically lower limit 75 to 80 mmHg, avoiding active augmentation over 90 to 95 mmHg) to optimize perfusion during the initial 3 to 7 days post-injury.
- Neurogenic shock (T6 or higher) presents with hypotension, bradycardia, and warm, dry peripheral vasodilation; manage with cautious fluids and norepinephrine or atropine/pacing as prescribed.
- In a patient with SCI typically at or above T6, autonomic dysreflexia is an uninhibited sympathetic response to a noxious stimulus below the level of injury; immediately elevate the head of the bed, remove constrictive gear, check bladder and bowel sources, and treat persistent severe hypertension under protocol or provider orders.
- Postoperative emergencies include spinal epidural hematomas, retropharyngeal hematomas after anterior cervical approaches, and CSF leaks, which require rapid escalation, airway readiness, and positional symptom tracking.
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