key term - Lumbar puncture

Definition

A lumbar puncture, also known as a spinal tap, is a medical procedure in which a needle is inserted into the lower back to collect cerebrospinal fluid (CSF) from around the spinal cord. This procedure is used for diagnostic or therapeutic purposes related to the central nervous system.

Related terms

Cerebrospinal Fluid (CSF): A clear, colorless body fluid found in the brain and spinal cord that acts as a cushion for the brain's cortex, providing basic mechanical and immunological protection.

Meningitis:

An inflammation of the protective membranes covering the brain and spinal cord, often diagnosed with the help of lumbar puncture by analyzing CSF.

Intracranial Pressure (ICP): The pressure exerted by fluids such as cerebrospinal fluid inside the skull and on the brain tissue, which can be indirectly assessed through lumbar puncture