Summary
This study examined the relationship of cumulative percent time that cerebral perfusion pressure (CPP) fell below set thresholds to outcome in individuals with traumatic brain injury (TBI). The sample included 157 patients (16 to 89 years of age, 79% male) admitted to an intensive care unit at an academic medical center who underwent invasive arterial blood pressure and intracranial pressure monitoring. CPP levels were recorded continuously during the first 96 hours of monitoring. Initial neurologic status was assessed using the post-resuscitation Glasgow Coma Scale. Outcome was evaluated at hospital discharge and at six months post-injury using the Extended Glasgow Outcome Scale (GOSE). The relationship of cumulative periods of low CPP to outcome was evaluated using hierarchical and binary logistic regression analysis, controlling for age, gender, and injury severity.
Patients experiencing less cumulative percent time below specific CPP thresholds were more likely to have better outcome at discharge (55 mm Hg, p=.004; 60 mm Hg, p=.008; 65 mm Hg, p=.024; 70 mm Hg, p=.016). Although differences in GOSE scores at six months were not significant, those with less time below CPP thresholds were more likely to survive. Accumulated episodes of low CPP had a stronger negative relationship with outcome in patients with more severe primary brain injury.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
References
Bouma GJ, Muizelaar JP (1990) Relationship between cardiac output and cerebral blood flow in patients with intact and impaired autoregulation. J Neurosurg 73: 368–374
Bouma GJ, Muizelaar JP, Stringer WA, Choi SC, Fatouros P, Young HF (1992) Ultra-early evaluation of regional cerebral blood flow in severely head-injured patients using xenon-enhanced computerized tomography. J Neurosurg 77: 360–368
Bullock R, Chesnut RM, Clifton G, Ghajar J, Marion DW, Narayan RK, Newell DW, Pitts LH, Rosner MJ, Wilberger JE (1996) Guidelines for cerebral perfusion pressure. J Neurotrauma 13: 693–697
Bullock RM, Chesnut RM, Clifton GL, Ghajar J, Marion DW, Narayan RK, Newell, DW, Pitts LH, Rosner MJ, Walters BC, Wilberger JE (2000) Guidelines for cerebral perfusion pressure. J Neurotrauma 17: 507–511
Bullock RM, Chesnut RM, Clifton GL, Ghajar J, Marion DW, Narayan RK, Newell DW, Pitts LH, Rosner MJ, Walters BC, Wilberger JE (2003) Update to guidelines for cerebral perfusion pressure. http://www.2.braintrauma.org/guidelines/downloads/btf_guidelines_cpp_u1.pdf?BrainTrauma_Session=e7f0e5d9dbe85b0c5c56b0abb0ede86c Last accessed 08/11/2004
Juul N, Morris GF, Marshall SB, The Executive Committee of the International Selfotel Trial, Marshal LF (2000) Intracranial hypertension and cerebral perfusion pressure: influence on neurological deterioration and outcome in severe head injury. J Neurosurg 92: 1–6
Marion DW, Darby J, Yonas H (1991) Acute regional cerebral blood flow changes caused by severe head injuries. J Neurosurg 74: 407–414
Nordstrom C-H, Reinstrup P, Xu W, Gargenfors A, Ungerstedt U (2003) Assessment of the lower limit for cerebral perfusion pressure in severe head injuries by bedside monitoring of regional energy metabolism. Anesthesiology 98: 809–814
Robertson CS, Valadka AB, Hannay HJ, Contant CF, Gopinath SP, Cormio M, Uzura M, Grossman RG (1999) Prevention of secondary ischemic insults after severe head injury. Crit Care Med 27: 2086–2095
Rosner MJ, Rosner SD, Johnson AH (1995) Cerebral perfusion pressure: management protocol and clinical results. J Neurosurg 83: 949–962
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2005 Springer-Verlag
About this paper
Cite this paper
Kirkness, C.J., Burr, R.L., Cain, K.C., Newell, D.W., Mitchell, P.H. (2005). Relationship of cerebral perfusion pressure levels to outcome in traumatic brain injury. In: Poon, W.S., et al. Intracranial Pressure and Brain Monitoring XII. Acta Neurochirurgica Supplementum, vol 95. Springer, Vienna. https://doi.org/10.1007/3-211-32318-X_3
Download citation
DOI: https://doi.org/10.1007/3-211-32318-X_3
Publisher Name: Springer, Vienna
Print ISBN: 978-3-211-24336-7
Online ISBN: 978-3-211-32318-2
eBook Packages: MedicineMedicine (R0)