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For unilateral spinal block, spinal local anesthetics should take effect on the spinal nerves of one side. With full flexion of the spine, the cauda equina becomes tightened and hangs in the middle of the subarachnoid space. This study was performed to assess if flexion of the vertebral column facilitates unilateral spinal anesthesia.
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| lateral decubitus position with full spinal flexion | Other | The patients maintained the lateral decubitus position with the hips and back fully flexed for 15 minutes. | ||
| lateral decubitus position without spinal flexion | Other | the patients are allowed to straighten their flexed hips and back to obtain the normal lordotic curvature of spinal column |
| Measure | Description | Time Frame |
|---|---|---|
| Time for the complete regression of pinprick spinal analgesia on the nondependent legs | Sensory and motor blockade were evaluated within 3 hour of intrathecal injection |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Seoul national university hospital | Seoul | 110-744 | South Korea |
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