lumbar puncture (lp), also known as a spinal tap, is a clinical method in which a needle is inserted into the spinal canal, most generally to acquire cerebrospinal fluid (csf) for diagnostic checking out. the main cause for a lumbar puncture is to assist diagnose sicknesses of the relevant fearful device, which includes the brain and spine. examples of these situations consist of meningitis and subarachnoid hemorrhage. it may additionally be used therapeutically in a few conditions. accelerated intracranial pressure (strain inside the skull) is a contraindication, because of chance of brain remember being compressed and pushed towards the spine. every so often, lumbar puncture can not be performed adequately (as an instance because of a extreme bleeding tendency). it's miles seemed as a secure manner, however publish-dural-puncture headache is a not unusual aspect effect.
the manner is usually achieved below local anesthesia the use of a sterile approach. a hypodermic needle is used to get right of entry to the subarachnoid area and fluid accrued. fluid may be despatched for biochemical, microbiological, and cytological analysis. the use of ultrasound to landmark may increase success.
lumbar puncture became first introduced in 1891 by using the german physician heinrich quincke.
the cause for a lumbar puncture can be to make a prognosis or to deal with a disorder.