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.
â¢ An LP (lumbar puncture) is an invasive diagnostic test, in which CSF. (cerebrospinal fluid) is extracted for examination, and pressure of the spinal. column is measured. â¢ The CSF is generally used to diagnose, or rule out such things as: primary. or metastatic brain or spinal cord neoplasm, cerebral hemorrhage,