csf drips but you can't aspirate...

[dabears505]

Have never aspirated since I left residency.

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[Dr. Rude]

Have never aspirated since I left residency.

I don't know if there is any data showing that injecting with free flowing CSF but does not aspirate has a higher incidence of failed spinals than injecting with free flowing CSF that does aspirate, but most of us find the latter more reassuring and worth the time to manipulate or redirect the needle. So why not?