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Risk of intravascular injection in transforaminal epidural injections
1Department of Anaesthesiology and Pain Medicine, Bundang Hospital, Seoul National University, Seongnam, Republic of Korea.
Anaesthesia
|July 22, 2010
Summary
Transforaminal epidural injections carry a risk of intravascular injection, particularly at cervical and sacral levels. Patient factors like age or BMI did not influence this risk, highlighting anatomical location as key.
Area of Science:
- Pain Management
- Interventional Radiology
- Spinal Anatomy
Background:
- Transforaminal epidural injections are common for spinal pain.
- Accidental vascular uptake or injury during these procedures can lead to severe complications.
- Identifying risk factors for intravascular injection is crucial for patient safety.
Purpose of the Study:
- To prospectively evaluate patient-specific factors associated with intravascular uptake during transforaminal epidural injections.
- To determine the incidence of intravascular injection across different spinal levels.
- To identify potential predictors of vascular complications.
Main Methods:
- Prospective evaluation of 2145 transforaminal epidural injections in 1088 patients.
- Procedures performed under contrast-enhanced, real-time fluoroscopic guidance.
- Data collected included patient demographics, diagnosis, injection level, side, surgical history, and injection frequency.
Main Results:
- Overall incidence of intravascular injection was 10.5% (224/2145).
- Highest incidence observed at cervical (20.6%) and sacral (16.5%) levels compared to lumbar (6.1%) and thoracic (8.2%) levels (p < 0.001).
- No significant association found between intravascular injection and patient age, sex, BMI, diagnosis, side, surgical history, or number of injections.
Conclusions:
- The anatomical level of transforaminal epidural injection significantly influences the risk of intravascular uptake, with cervical and sacral levels being higher risk.
- Patient characteristics studied do not appear to be reliable predictors of intravascular injection.
- Enhanced vigilance and procedural caution are warranted at higher-risk spinal levels.
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