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Lumbar Puncture - What To Think About
About this test
- A lumbar puncture is not done if the person
has:
- A suspected tumor, swelling, or increased pressure in the brain. A computed tomography (CT) scan or magnetic resonance imaging (MRI) scan may be done first to see if it is safe to do the lumbar puncture.
- A skin infection on the lower back. Doing a lumbar puncture in this case may allow the infection to spread into the spinal canal.
- Bleeding disorders, which may increase the chance of bleeding during the procedure.
- Other tests that may be done include:
- A cisternal or ventricular puncture. Cerebrospinal fluid (CSF) can be collected from the upper spinal canal at the base of the skull (cisternal puncture) or from within the skull (ventricular puncture) when it is not possible to get CSF from the lumbar area. These procedures are done by a trained radiologist or neurosurgeon. Special X-ray methods are used to guide the placement of the needle.
- Bacterial marker studies. In cases of suspected bacterial meningitis, bacterial marker (bacterial antigen) studies can quickly find the common types of bacteria that cause meningitis. Antibiotic treatment for that bacteria can be started immediately.
| By: | Healthwise Staff | Last Revised: August 25, 2010 |
| Medical Review: | E. Gregory Thompson, MD - Internal Medicine Joseph O'Donnell, MD - Hematology, Oncology | |
© 1995-2011 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated. This information does not replace the advice of a doctor. Healthwise, Incorporated disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. How this information was developed to help you make better health decisions.
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