e measurement is made after a period of recumbency, or if the CSF leak is intermittent. Even within the same patient, the CSF pressure may vary from LP to LP. In patients with spontaneous intracranial hypotension, LPs are often difficult. Repeated attempts may be needed to obtain CSF, and traumatic blood

e measurement is made after a period of recumbency, or if the CSF leak is intermittent. Even within the same patient, the CSF pressure may vary from LP to LP. In patients with spontaneous intracranial hypotension, LPs are often difficult. Repeated attempts may be needed to obtain CSF, and traumatic blood