Indications for Head CT before LP: • Age > 60 • Immunocompromise (e.g., HIV) • History of central nervous system (CNS) disease • Recent seizure (within I week) • Altered mental status • Focal neurologic defects If a patient had none of the above clinical characteristics, he or she had only a 1% risk of having a mass effect on head CT. SCVMC Internal Medicine @SCVMCMed #HeadCT #before #LP #lumbarpuncture #Indications #neurology
