TY - CHAP M1 - Book, Section TI - Anatomy A1 - Rahmani, Redi A1 - Lawton, Michael T. A1 - Vates, G. Edward Y1 - 2024 N1 - T2 - External Ventricular and Lumbar Drains: Indications, Procedures, and Patient Care AB - CHAPTER SUMMARYThe trajectories of an external ventricular drain (EVD) can generally be categorized as either anterior or posterior. The entry points for anterior trajectories include the Kocher, Barrow, and Kaufmann points, whereas those for posterior trajectories include the Keen, Frazier, Sanchez, and Dandy points. These same trajectories apply intraoperatively, with the removal of cranial bone. Theoretically, any trajectory into the ventricular system can be used for an EVD. However, the neurosurgeon must account for the anatomy that will be transgressed. Placement of a lumbar drain usually requires the use of a Tuffier line at the L4-L5 intervertebral space. SN - PB - McGraw Hill CY - New York, NY Y2 - 2023/12/10 UR - neurology.mhmedical.com/content.aspx?aid=1201301582 ER -