Podcast Episode
CRPS and Intrathecal Pumps- ABA Pain Medicine Board Pearls and more!

About this episode
🎙️ PainExam Podcast Show Notes
CRPS & Intrathecal Pain Pumps — High-Yield ABA Pain Board Review
🔥 Episode Overview
In this episode of the PainExam Podcast, David Rosenblum reviews two essential ABA Pain Medicine Board topics:
Complex Regional Pain Syndrome (CRPS)
Intrathecal Drug Delivery Systems (Pain Pumps)
This episode focuses on:
High-yield board pearls
Clinical decision-making
Interventional treatment strategies
Common exam pitfalls
Whether you are preparing for the:
ABA Pain Medicine Boards
ABPM
ABIPP
FIPP
—or looking to sharpen your interventional pain knowledge—this episode delivers practical and testable concepts.
🧠 Topic 1: Complex Regional Pain Syndrome (CRPS)
🔬 What is CRPS?
CRPS is a chronic neuropathic pain condition characterized by:
Disproportionate pain
Autonomic dysfunction
Sensory abnormalities
Motor and trophic changes
📋 CRPS Types
CRPS Type I
No confirmed nerve injury
Formerly "Reflex Sympathetic Dystrophy"
CRPS Type II
Confirmed nerve injury
Formerly "Causalgia"
⚠️ Pathophysiology
CRPS involves:
Peripheral sensitization
Central sensitization
Sympathetic dysfunction
Neurogenic inflammation
Cortical reorganization
🩺 High-Yield Clinical Features
Burning pain
Allodynia
Hyperalgesia
Temperature asymmetry
Skin color changes
Edema
Weakness and trophic changes
📚 Budapest Criteria (BOARD FAVORITE)
Diagnosis requires:
Continuing pain disproportionate to injury
Symptoms in ≥3 categories
Signs in ≥2 categories
💊 Treatment
First-Line
Physical therapy (MOST important)
Early mobilization
Medications
Gabapentin
Pregabalin
TCAs
Interventional
Sympathetic blocks
Spinal cord stimulation
🚨 Board Pearls
Early treatment improves outcomes
CRPS may spread beyond the initial site
Immobilization worsens symptoms
💉 Topic 2: Intrathecal Drug Delivery Systems (Pain Pumps)
🔬 What Are Intrathecal Pumps?
Intrathecal pumps deliver medications directly into the CSF, allowing:
Lower systemic doses
Better analgesia
Reduced systemic side effects
🎯 Indications
Failed back surgery syndrome
Cancer pain
Refractory neuropathic pain
Severe chronic pain not responsive to conservative therapy
💊 Common Intrathecal Medications
Opioids
Morphine
Hydromorphone
Non-Opioid
Ziconotide
Other
Baclofen (spasticity)
⚠️ Ziconotide — HIGH-YIELD BOARD PEARL
Ziconotide:
Blocks N-type calcium channels
Does NOT cause respiratory depression
Can cause psychiatric side effects
⚠️ Major Complications
Infection
Catheter malfunction
Pump failure
Withdrawal syndromes
Catheter-tip granuloma formation
🚨 Granuloma Formation
High-dose intrathecal opioids may cause:
Catheter-tip inflammatory masses
Cord compression
Neurologic deficits
📋 Trialing
Patients typically undergo:
Bolus trial
Continuous infusion trial
before permanent implantation.
🎯 Board Pearls
Ziconotide = no respiratory depression
Pump failure can cause life-threatening withdrawal
Granulomas are associated with opioid concentration
📝 High-Yield Board Takeaways
CRPS
Budapest criteria = critical
Early PT = first-line
Autonomic dysfunction = hallmark
Intrathecal Pumps
Ziconotide is highly testable
Know granuloma risks
Understand pump complications and withdrawal
🎓 Pain Board Prep Resources
Prepare for your ABA Pain Medicine boards with:
👉 https://painexam.com
👉 https://nrappain.org
🏆 Why Physicians Choose NRAP Academy
Comprehensive board prep
High-yield MCQs
Virtual Pain Fellowship
Ultrasound-guided pain training
Interventional pain education
🎤 Upcoming Training
Join upcoming:
Ultrasound-guided procedure workshops
Regenerative medicine courses
Pain board review sessions
📢Register today!
If you're serious about:
✅ Passing your pain boards
✅ Masteri