Foods are a major cause of excessive gas. Beans are a well-known culprit, but there are many others. Each food affects everyone differently, but here are some that commonly cause flatulence and burping.
A lumbar puncture (also called a spinal tap) is a procedure to collect and look at the fluid (cerebrospinal fluid, or CSF) surrounding the brain and spinal cord. During a lumbar puncture, a needle is carefully inserted into the spinal canal low in the back (lumbar area). Samples of CSF are collected.
1 A syringe is attached to the spinal needle to draw out the fluid. The fluid can also be allowed to drip into a collection tube.  A lumbar tap (also called lumbar puncture) is performed in the lower back of a patient. The area is shaved and sterilized, and a spinal needle is inserted.