Um, Letâs Rethink That Salute (1930s) Again, in his book To the Flag: The Unlikely History of the Pledge of Allegiance, Richard J. Ellis explains that by the mid-1930s, Americans had begun to notice eerie similarities between the Bellamy salute and the âHeil Hitlerâ salute.
A lumbar puncture may be used to collect a sample of cerebrospinal fluid in order to detect the presence of certain types of cancer or infection. Lumbar punctures may also be used to inject medications, such as spinal anesthesia or chemotherapy drugs.
A lumbar puncture (LP) is the insertion of a needle into the fluid within the spinal canal. It is termed a lumbar puncture because the needle goes into the lumbar portion (the small) of the back.Other names for a lumbar puncture (an LP) include spinal tap, spinal puncture, thecal puncture, and rachiocentesis. lumbar puncture (LP) is the insertion of a needle into the fluid within the spinal canal. It is termed a lumbar puncture because the needle goes into the lumbar portion (the small) of the back.