Injury to the conus medullaris скачать в хорошем качестве

Injury to the conus medullaris

Rarity and Incidence: Extremely rare complication of spinal anesthesia Estimated incidence of serious neurologic injury is 1-6 per 100,000 cases Most likely to occur with inadvertent injection at or above L2-L3 intervertebral space Mechanism: Occurs when anesthetic solution is injected directly into the conus medullaris (typically ending at L1-L2) Can form a syrinx (fluid-filled cavity) that increases pressure on neural pathways Symptoms depend on needle orientation, injection volume, injection level, and patient anatomy Clinical Characteristics: Neurologic symptoms typically involve multiple nerve distributions Can be unilateral or bilateral May include sensory and/or motor deficits Warning Signs: Pain during injection should immediately halt the procedure Persistent paresthesia requires needle repositioning Symptoms can be heterogeneous due to individual anatomical variations