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Microscopic Analysis of Three Different Spinal Needle Tips After Experimental Subarachnoid Puncture

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Microscopic analysis revealed tissue damage and foreign particles in spinal needles, highlighting cutting tips' impacts.

Only 2 out of 32 needle tips showed significant damage under microscopic analysis.
Modified Quincke needles had the highest rate of visible fluorescent tissue particles at 56%, compared to others.
Cytocentrifugation smears indicated more tissue clustering with modified Quincke needles than the other types.
Tissue coring during lumbar puncture seems common, with cutting Quincke needles exhibiting prominent tissue attachments.

Puolakka et al. (2000) studied this question.

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