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Difficulty: HardSurgical and Procedural Interventions

An emergency medical team transports a 35-year-old man to the hospital after he suddenly lost the ability to move his legs this morning. He reports severe, unremitting mid-back pain that has progressively worsened over the past three weeks. He has a history of intravenous heroin use. He notes that he has not been able to urinate for the past 14 hours. His temperature is 38.8°C (101.8°F), pulse is 112/min, and blood pressure is 118/76 mm Hg. Neurologic examination reveals flaccid paralysis of both lower extremities with absent patellar and Achilles reflexes. Sensation to pinprick and temperature is absent below the umbilicus. Rectal examination demonstrates absent sphincter tone. Laboratory studies show a leukocyte count of 19,500/mm³ and an erythrocyte sedimentation rate of 85 mm/h. Magnetic resonance imaging of the spine reveals a large, peripherally enhancing epidural fluid collection extending from T8 to T11 with severe compression of the spinal cord. Blood cultures are drawn, and empiric broad-spectrum intravenous antibiotics are initiated. Which of the following is the most appropriate next step in the management of this patient?

  1. A
    Image-guided percutaneous needle aspiration
  2. B
    Administration of high-dose intravenous dexamethasone
  3. C
    Transfer to the intensive care unit for frequent neurologic monitoring
  4. Urgent surgical decompression and debridementAnswer
  5. E
    Computed tomography angiography of the aorta

Answer

Urgent surgical decompression and debridement
The correct intervention is urgent surgical decompression and debridement. This patient presents with a spinal epidural abscess (SEA) complicated by severe, acute spinal cord compression and cauda equina syndrome. Once profound neurologic deficits (such as paraplegia and urinary retention) develop, the most critical and definitive intervention is emergent open surgical decompression (typically via laminectomy) along with debridement of the infected material. Immediate relief of the mechanical compression is required to prevent irreversible ischemic injury to the spinal cord. Empiric antibiotics are necessary but insufficient on their own in the presence of severe neurologic compromise.

Step-by-Step Solution

1
Identify the primary diagnosis
The patient has a spinal epidural abscess (SEA), evidenced by fever, back pain, neurological deficits, elevated inflammatory markers, and a confirming MRI in the setting of intravenous drug use.
Recognizing the triad of fever, back pain, and neurologic deficits is critical for diagnosing SEA.
2
Assess the severity of the condition
The patient has acute spinal cord compression and cauda equina syndrome, demonstrated by flaccid paraplegia, absent reflexes, a sensory level, and urinary retention.
The presence and duration of neurological deficits dictate the urgency and type of intervention required.
3
Determine the optimal intervention based on severity
Patients with SEA and significant or progressive neurological deficits require emergent open surgical decompression (laminectomy) combined with debridement and systemic antibiotics.
Medical management or less invasive aspiration alone cannot relieve the acute physical pressure on the spinal cord rapidly enough to prevent permanent ischemic damage.

Key Concept

Surgical management of spinal epidural abscess with neurologic compromise
Estimated Time:1m 30s
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Topics

Surgical and Procedural Interventions

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