chapter 7, spine and spinal cord trauma

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Chapter 7, Spine and Spinal Cord Trauma

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  • ObjectivesEvaluate for suspected spinal injury.Appropriately manage spinal injury.Determine appropriate patient disposition.

  • Key QuestionsWhen do I suspect spine injury?How do I confirm the presence or absence of a significant spine injury?How do I protect the spine during evaluation and transport?How do I assess the patients neurologic status?

  • More Key QuestionsHow do I identify and treat neurogenic and spinal shock?How do I treat the patient with spinal cord injury and limit secondary injury?

  • Unconscious patient Neurologic deficitSpine pain / tenderness

  • Spinal Injury ScreeningIf patient is ConsciousCooperative Able to concentrate on c-spine

    If no neck or spine pain or tendernessIf still no pain or tenderness with voluntary movement No further evaluation or x-ray necessaryRemove c-collar

  • Spinal Injury Screening Radiographic: Normal x-raysClinical Normal neurologic exam and Absence of spinal pain and tendernessDrugs, alcohol, and other injuries may mask spinal injury

  • Spine Injury ScreeningAltered SensoriumRadiographic visualization of entire spinePlain films CT scan of suspicious or poorly visualized areas

  • C-spine X-raysCrosstable lateral film excludes 85% of fracturesAddition of AP and odontoid views exclude most fracturesAlso may require Swimmers viewCT scan for bony detail MRI

  • C-spine X-rays10% of patients with a c-spine fracture have a 2nd, associated noncontiguous vertebral column fractureIdentify 1 abnormality? Look for another!Radiographic screening of entire spine required in this situation

  • How do I protect the spine?Immobilize entire patient on long spine board with proper paddingApply semirigid cervical collarProtection is priority; detection is secondary

  • How do I protect the spine?Spinal evaluation complicated by altered sensoriumRemove spine board as soon as possible and logroll patientPressure sores occur early in unconscious or paralyzed patients

  • At least 5% of patientsWith spinal cord injuries Worsen neurologically at hospital.

  • Assess neurologic status?Neurologic levelMost caudal level of motor / sensory functionMotor and sensory may not be same Sensory may vary on each side Bony level: Site of vertebral column damage

  • Assess neurologic status Complete: No motor or sensory function below injury levelIncomplete:Any motor or sensory preservation below injury level Sacral sparing may be only residual function

  • Injury effect on assessment / management?Inadequate ventilationAbdominal evaluation compromisedOccult compartment syndrome

  • Identify / treat neurogenic shock?Associated with cervical / high thoracic spine injuryHypotension and slow heart rate Treatment: Fluid Resuscitation and occasional atropine and vasopressors

  • Identify spinal shock?Neurologic, not hemodynamic phenomenonOccurs shortly after cord injury Variable duration Flaccidity and loss of reflexes

  • Treat / prevent secondary injury?Ensure adequate ventilation and oxygenationMaintain blood pressureAtropine as needed for bradycardiaMethylprednisolone

  • Assess for associated bleeding Consider neurogenic shock Monitor urinary output

  • Blunt injury only Start within 8 hours of injury30 mg / kg over 15 minutes5.4 mg / kg over next 23 hours if started within 3 hours of injury48 hours if started within 3 to 8 hours after injury

  • Management Provide respiratory support as needed Properly immobilize entire patientAvoid transfer delay!

  • Who do I transfer?Unstable fractures Neurologic deficitAvoid transfer delay!

  • Treat life-threatening injuries first Immobilize Appropriate spine films Document examination Neurosurgical / orthopedic consultTransfer unstable fracture / cord injury