Lumbar puncture (LP) is a technique to sample cerebrospinal fluid (CSF) as a window into brain pathology (Supplemental Data). However, note that CSF results should always be interpreted with the clinical picture in mind. Diagnostic Lumbar Puncture is one of the most commonly performed invasive tests in clinical medicine. The procedure involves introducing a needle into the subarachnoid space of the lumbar sac, at a level safely below the spinal cord . There are no absolute contraindications to a lumbar puncture, although increased intracranial pressure, bleeding disorders, and spinal abscesses all increase the risk of complications. A lumbar puncture needle with stylet is inserted into the L3-to L4 or L4-to-L5 interspace (the L4 spinous process is typically on a line between the posterior-superior iliac crests); the needle is aimed rostrally toward the patient’s umbilicus and always kept parallel to the floor. SUMMARY: Lumbar puncture has, for many years, been the responsibility of the internal medicine physician or the neurologist. Are you looking for never-ending fun in this exciting logic-brain app?

Summary: Assuming the patient has no contraindications and the patient has given consent (assuming it is not an emergency), the following information will describe the steps involved to complete a lumbar puncture for the purpose of measuring the opening pressure and/or obtaining cerebrospinal fluid (CSF). A lumbar puncture is where a thin needle is inserted between the bones in your lower spine.

A lumbar puncture is a diagnostic test for multiple sclerosis that involves removing and analysing a sample of cerebrospinal fluid (CSF), the fluid that surrounds the brain and spinal cord within the skull and backbone. It shouldn't be painful, but you may have a headache and some back pain for a few days. The L2–3 and L3–4 midline interspinous spaces are the widest, and lumbar puncture can be safely performed at these levels. For the procedure, the patient is typically in the left lateral decubitus position. Lumbar puncture . Reference ranges may vary between labs Normal results in adults Appearance: Clear Opening pressure: 10-20 … A lumbar puncture is an invasive test designed to access the subarachnoid space in the lower spinal canal.

It shouldn't be painful, but you may have a headache and some back pain for a few days. Sometimes, the needle can make contact with a small vein, causing a traumatic tap. The brain and spinal cord are covered by three layers of meninges- the dura, arachnoid, and pia mater (Figure 1). History. Interpretation of CSF results from lumbar puncture (LP) The outline below gives basic indication of patterns of disease to look for in CSF. Lumbar Puncture | Imaging : Lumbar Puncture (Spinal Tap) What is it?