[A case of unexpected involuntary movement of lower extremities during epidural anesthesia]
Hajime Takase1, Tetsuya Kushikata, Hironori Ishihara
1Department of Anesthesiology, Hirosaki University School of Medicine, Hirosaki 036-8563.
Insights
A patient experienced involuntary leg movements after epidural lidocaine injection for bladder tumor surgery. Further diagnostic imaging ruled out serious complications, though the exact cause remains unclear.
Area of Science:
- Anesthesiology
- Neurology
Background:
- A 79-year-old male underwent transurethral resection of a bladder tumor.
- Preoperative assessments showed no significant abnormalities.
Observation:
- An epidural catheter was placed at the L3-4 interspace for anesthesia.
- 1.5% lidocaine (10 ml) was administered without immediate adverse events.
- Involuntary lower extremity movements began approximately 30 minutes post-injection.
Findings:
- The involuntary movements persisted for 150 minutes without sensory or motor deficits.
- Post-operative examination revealed no hemorrhage or pain at the puncture site.
- Cerebral CT and lumbar MRI scans did not identify any abnormalities that could explain the movements.
Implications:
- The precise mechanism of the observed involuntary movements remains undetermined.
- Diagnostic imaging is crucial for excluding complications such as epidural hematoma.
- This case highlights the importance of comprehensive evaluation for unexpected neurological events post-epidural anesthesia.
Abstract:
A 79-year-old man was scheduled for transurethral resection of the bladder tumor. Preoperative clinical and laboratory examinations revealed no abnormalities. An epidural catheter was inserted into the L3-4 interspace and 1.5% lidocaine 10 ml was injected smoothly with no abnormal signs. Thirty minutes after the injection, involuntary movement of lower extremities was noticed. When the catheter was removed after the operation, there was neither hemorrhage nor pain at the puncture site. Neither sensory disorder nor paralysis occurred while the movement continued for 150 minutes. No abnormal findings which might cause the involuntary movement were detected by clinical examinations including the cerebral CT and lumbar MRI. The detailed mechanism of the involuntary movement was not clarified, but exclusion of several complications including epidural hematoma by CT and MRI examination is essential for further diagnosis and treatment.
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