When should the neurosurgery team take out the ICP monitor after severe TBI? One paper suggests that we should wait until after 7 days. Up to 17% of patients have a delayed ICP rise after severe injury. That is of course assuming that there is no exam or functional status marker to follow, as the authors mention in their discussion.
O’Phelan, K. H., Park, D., Efird, J. T., Johnson, K., Albano, M., Beniga, J., et al. (2009). Patterns of increased intracranial pressure after severe traumatic brain injury. Neurocritical Care, 10(3), 280–286. doi:10.1007/s12028-008-9183-7