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Premedication and short term complications in iohexol discography
K Tallroth1, J Soini, I Antti-Poika
1Department of Radiology, Orthopaedic Hospital of the Invalid Foundation, Helsinki, Finland.
Summary
Iohexol discography for lumbar discs showed immediate adverse reactions like nausea and convulsions, likely due to the procedure, not the contrast medium. Post-procedure, headache and low back pain were common, with 81% experiencing increased pain.
Area of Science:
- Radiology
- Pain Management
- Neurosurgery
Background:
- Lumbar discography is a diagnostic tool for low back pain.
- Non-ionic contrast media are used in discography.
- Understanding the safety profile of contrast agents is crucial.
Purpose of the Study:
- To evaluate the safety and tolerability of iohexol in lumbar discography.
- To assess immediate and delayed adverse events associated with iohexol discography.
- To investigate the relationship between injection pain and analgesic requirements.
Main Methods:
- 52 patients underwent lumbar discography with iohexol (180 mg/ml).
- Lateral injection technique with fluoroscopy control was used.
- Patients received either diazepam alone or diazepam with pethidine and glycopyrronium bromide premedication.
Main Results:
- No significant difference in injection pain between premedication groups.
- Immediate adverse events included nausea (2%), convulsions (4%), back pain (6%), and hypotension (10%).
- Delayed complications included severe headache (10%) and increased low back pain (81%).
Conclusions:
- Immediate reactions are likely procedure-related, not specific to iohexol.
- Delayed headache may be linked to cerebrospinal fluid leakage.
- Increased low back pain post-procedure could be due to local hematoma or chemical irritation.