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Neurosurgery MCQ. 1: A bloody tap during lumbar puncture can be due to?

Choices:

1. Intracerebral hemorrhage
2. Injury to aorta
3. Injury to intercostal artery
4. Injury to venous plexus

Explanation:

Blood observed after a LP in the first tube is usually traumatic and may be due to injury to the spinal venous plexus.

Often the fluid will clear as succeeding tubes are filled. If the red blood cells have been in the spinal fluid for some time, xanthochromia will be present



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