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.
Before the procedure is begun the patient is given a simple explanation of the nature and purpose of the test and is told that there is no danger of damage to the spinal cord during a lumbar puncture because the spinal cord does not extend below the second lumbar vertebra. For a cisternal puncture, the back of the neck may be shaved.