Emergent spinal MRI in IVDU patients presenting with back pain: do we need an MRI in every case?

Area of Science:

• Radiology
• Infectious Diseases
• Emergency Medicine

Background:

• Spinal MRI is the preferred imaging modality for suspected spinal infections.
• Patients with a history of intravenous drug use (IVDU) presenting with acute back pain are at increased risk for spinal infections.

Purpose of the Study:

• To evaluate the diagnostic utility of contrast-enhanced spinal MRI in emergency department patients with acute back pain and a history of IVDU.
• To determine the impact of MRI findings on patient management, including admission and treatment decisions.

Main Methods:

• Retrospective review of 167 IVDU patients presenting to the ED with acute back pain.
• Analysis of contrast-enhanced spinal MRI findings, electronic charts, and treatment outcomes.
• Statistical analysis (Fisher's exact test) to identify significant associations between MRI findings and clinical management.

Main Results:

• Spinal infection was identified in 39.5% of patients via MRI.
• MRI findings significantly influenced decisions regarding patient admission and treatment.
• Nearly half of patients with confirmed infection (48.5%) required surgical or percutaneous intervention.

Conclusions:

• Emergent contrast-enhanced spinal MRI is justified in the workup of IVDU patients with acute back pain.
• MRI findings are crucial for timely diagnosis and appropriate management of spinal infections in this high-risk population.
• Despite resource demands, spinal MRI aids in critical decision-making for suspected spinal infections in IVDU patients.