Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
2012 | 7 | 2 | 169-175
Tytuł artykułu

Accuracy of non-invasive intracranial pressure measurement

Treść / Zawartość
Warianty tytułu
Języki publikacji
Non-invasive measurement of intracranial pressure (ICP) reduces the complications and cost for both patient and health care systems. Improvement of non-invasive methods has led to development of systems for reproducing continuous, real-time non-invasive ICP signals. So far, non-invasive methods have been tailored for the patients with head trauma. We have used Schmidt’s auto-adaptive method to assess the accuracy of this method for patients after surgery for supratentorial brain tumors. Data from forty patients with the diagnosis of brain tumor operated from 2008 to 2010 were used to estimate the accuracy of Schmidt’s method in our patients. We obtained the model parameters from 30 recordings. We determined the ICP wave form for the remaining patients by both invasive and non-invasive techniques. In the test group, by invasive method, the mean ICP±2SD was 17.1 ± 6.6 mmHg and using non-invasive method, the mean ICP ± 2SD was 16.5 ± 5.4 mmHg. The calculated error was 4.6 mmHg using root mean square errors. The average Pearson correlation between the estimated and real waveforms was 0.92. We believe that application of this method is acceptable for post-operative assessment of ICP in brain tumor patients.
Słowa kluczowe

Opis fizyczny
  • Shohada Tajrish Hospital, Shahid Beheshti University of Medical Sciences, Functional Neurosurgery Research Center of Shohada Tajrish Hospital, Shahrara Park, 1445744454, Tehran, Iran,
  • Shahed University, Shahrara Park, 1445744454, Tehran, Iran
  • Shahid Rajaee Hospital, Qazvin University of Medical Sciences, Functional Neurosurgery Research Center of Shohada Tajrish Hospital, 1445744454, Tehran, Qazvin, Iran
  • Shohada Tajrish Hospital, Shahid Beheshti University of Medical Sciences, Neurofunctional Research Center of Shohada Tajrish Hospital, 1445744454, Teheran, Iran
  • [1] Aaslid R, Lundar T, Lindegaard KF, Nornes H E. Stimation of cerebral perfusion pressure from arterial blood pressure and transcranial Doppler recordings. In: Miller JD, Teasdale GM, Rowan JO, Galbraith SL, Mendelow AD (eds) Intracranial pressure VI. Springer, Berlin, 226–229, 1993
  • [2] Bundgaard H, Landsfeldt U, Cold GE. Subdural monitoring of ICP during craniotomy: Thresholds of cerebral swelling/ herniation ActaNeurochir Suppl (Wien), 71: 276–278, 1998
  • [3] Chan KH, Miller JD, Dearden NM, Andrews PJ, Midgley S. The effect of changes in cerebral perfusion pressure upon middle cerebral artery blood flow velocity and jugular bulb venous oxygen saturation after severe brain injury. J Neurosurg, 77: 117–130, 1992
  • [4] Constantini S, Cotev S, Rappaport ZH, Pomeranz S, Shalit MN. Intracranial pressure monitoring after elective intracranial surgery.A retrospective study of 514 consecutive patients. J Neurosurg. 69(4): 540–544, 1988[Crossref]
  • [5] Czosnyka M, Matta BF, Smielewski P, Kirkpatrick P, Pickard JD Cerebral perfusion pressure in headinjured patients: a non-invasive assessment using transcranial Doppler ultrasonography. J Neurosurg. 88(5), 802–808, 1998[Crossref]
  • [6] Diehl RR, Linden D, Lücke D, Berlit P. Phase relationship between cerebral blood flow velocity and blood pressure: a clinical test of autoregulation. Stroke, 20: 1–3, 1989[Crossref]
  • [7] Panerai RB, White RP, Markus HS, Evans DH. Grading of cerebral dynamic autoregulation from spontaneous fluctuations in arterial blood pressure. Stroke. 29: 2341–2346, 1998[Crossref]
  • [8] Piechnik SK, Yang X, Czosnyka M, Smielewski P, Fletcher SH, Jones AL, Pickard JD. The continuous assessment of cerebrovascular reactivity: a validation of the method in healthy volunteers. Anesth Analg, 89: 944–949, 1999 [PubMed]
  • [9] Rosner MJ, Rosner SD, and Johnson AH. Cerebral perfusion pressure: management protocol and clinical results. J Neurosurg: 83: 949–962, 1995[Crossref]
  • [10] Schmidt B, Klingelhöfer J, Schwarze JJ, Sander D, Wittich I Non-invasive prediction of intracranial pressure curves using transcranial Doppler ultrasonography and blood pressure curves. Stroke, 28: 2465–2472, 1997[Crossref]
  • [11] Schmidt B, Czosnyka M. “Adaptive Non-invasive Assessment of Intracranial Pressure and Cerebral Autoregulation.” Stroke,J.American Heart Association. 34: 84–89, 2003
  • [12] Schmidt B, Schwarze J. “A Method for a Simulation of Continuous Intracranial Pressure Curves.” Computers and Biomedical Research, 12(4): 231–243, 1998[Crossref]
  • [13] Schmidt B, Czosnyka M. “Evaluation of a method for non-invasive intracranial pressure assessment during infusion studies in patients with hydrocephalus.” J Neurosurg; 92: 793–800, 2000[Crossref]
  • [14] Smith M., Monitoring Intracranial Pressure in Traumatic Brain Injury. Anesthesia and analgesia. 106(1): 240–248, 2008[Crossref]
  • [15] Sharma D, Parmod K, Hari H, Rajendra S, Pimwan V, Monica S. Cerebral Autoregulation and CO2 Reactivity Before and After Elective Supratentorial Tumor Resection. Journal of Neurosurgical Anesthesiology, 22(2): 132–137, 2010
  • [16] Steiner LA, Czosnyka M, Piechnik SK. Continuous monitoring of cerebrovascular pressure reactivity allows determination of optimal cerebral perfusion pressure in patients with traumatic brain injury. Crit Care Med, 30: 733–738, 2002.[Crossref]
  • [17] Steiner L.A. and Andrews P.J. D. Monitoring the injured brain: ICP and CBF, British Journal of Anaesthesia 97(I), 26–38, 2006[Crossref]
Typ dokumentu
Identyfikator YADDA
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.