Thoracic Epidural vs. Paravertebral Nerve Blocks for Acute Rib Fractures

Efficacy Comparison

Thoracic epidural analgesia provides more comprehensive pain relief for rib fractures compared to paravertebral blocks and parenteral opioids, as supported by systematic reviews 1, 2
Both TEA and PVB significantly reduce opioid consumption and delirium in older patients with rib fractures compared to systemic analgesics 1, 3
The American Society of Anesthesiologists recommends TEA for patients with traumatic rib fractures to improve pain control and respiratory function 4

PVB can be used in coagulopathic and anticoagulated patients with fewer restrictions than TEA 1, 2
PVB has fewer hemodynamic side effects (less hypotension) compared to TEA 1

TEA is associated with more frequent hypotension requiring vasopressors compared to PVB 1, 2
TEA more commonly causes motor block which can limit mobilization 1, 2
Both techniques require careful consideration in anticoagulated patients, though PVB has fewer restrictions 1, 5

The American College of Surgeons and other guideline societies support the use of thoracic epidural analgesia as a first-line treatment for severe rib fractures with high risk factors, including age >60, SpO2 <90%, obesity/malnutrition, multiple rib fractures or flail segment, pulmonary contusion, smoking/chronic respiratory disease, anticoagulation, and major trauma 1, 2
Paravertebral blocks are recommended for patients who are anticoagulated or have coagulopathy, or when TEA is contraindicated 1, 2

Elderly patients (>60 years) with rib fractures have higher mortality rates and require more aggressive pain management 1, 5
TEA and PVB both reduce delirium risk in older patients compared to opioid-based regimens 1, 2
The American Geriatrics Society recommends careful monitoring for respiratory depression in elderly patients receiving any analgesic technique 2, 5

Inadequate pain control leads to shallow breathing, atelectasis, and pneumonia 5

The American Society of Anesthesiologists and American College of Surgeons recommend TEA as first-line treatment for severe rib fractures with high-risk factors because it improves respiratory mechanics and reduces pulmonary complications that drive mortality 6

TEA with local anesthetics reduces duration of mechanical ventilation (weighted mean difference -4.2 days), which is a key driver of mortality in this population 6
TEA shortens ICU length of stay (15.6 vs 12.1 days, p<0.05) in patients with ≥3 rib fractures 6

For maximum mortality benefit, TEA must be implemented within 48-72 hours of injury, and use thoracic epidural with local anesthetics (bupivacaine) plus opioids (fentanyl) 6
Monitor closely for hypotension (odds ratio 13.76 for hypotension with TEA vs other modalities) and have vasopressors readily available 6