How to ensure that the puncture needle is in the subarachnoid space during lumbar anesthesia

Objective To observe the therapeutic effect of subarachnoid puncture on intraventricular hemorrhage. Methods According to the routine spinal anesthesia, the epidural anesthesia needle was inserted into the subarachnoid space, the dural catheter was placed, and the cerebrospinal fluid was drained or replaced.

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