Lumbar puncture & measuring Brain Pressure - Aspirating spinal fluid

Lumbar puncture & measuring Brain Pressure - Aspirating spinal fluid A lumbar puncture (commonly called a spinal tap) is a medical procedure in which a doctor inserts a thin needle into the lower part of the spine, specifically the lumbar region. The needle is inserted into the space between two vertebrae to access the cerebrospinal fluid (CSF), the clear fluid that surrounds the brain and spinal cord.