About this Journal Submit a Manuscript Table of Contents
BioMed Research International
Volume 2013 (2013), Article ID 640638, 4 pages
Clinical Study

Cerebral Blood Flow Dynamics and Head-of-Bed Changes in the Setting of Subarachnoid Hemorrhage

1Department of Neurosurgery, University of Iowa Hospitals and Clinics, 200 Hawkins Drive, JCP 1616, Iowa City, IA 52242, USA
2Department of Neurosurgery, Thomas Jefferson University and Jefferson Hospital for Neuroscience, Philadelphia, PA, USA
3Department of Neurological Surgery, University of Virginia School of Medicine, Charlottesville, VA, USA

Received 16 September 2013; Accepted 30 October 2013

Academic Editor: Steven J. Monteith

Copyright © 2013 David K. Kung et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Linked References

  1. A. W. Wojner-Alexandrov, Z. Garami, O. Y. Chernyshev, and A. V. Alexandrov, “Heads down: flat positioning improves blood flow velocity in acute ischemic stroke,” Neurology, vol. 64, no. 8, pp. 1354–1357, 2005. View at Scopus
  2. T. Kulik, Y. Kusano, S. Aronhime, A. L. Sandler, and H. R. Winn, “Regulation of cerebral vasculature in normal and ischemic brain,” Neuropharmacology, vol. 55, no. 3, pp. 281–288, 2008. View at Publisher · View at Google Scholar · View at Scopus
  3. K. March, P. Mitchell, S. Grady, and R. Winn, “Effect of backrest position on intracranial and cerebral perfusion pressures,” The Journal of Neuroscience Nursing, vol. 22, no. 6, pp. 375–381, 1990. View at Scopus
  4. T. Lovell, A. C. Marshall, C. E. Elwell, M. Smith, and J. C. Goldstone, “Changes in cerebral blood volume with changes in position in awake and anesthetized subjects,” Anesthesia and Analgesia, vol. 90, no. 2, pp. 372–376, 2000. View at Scopus
  5. G. Lefthériotis, M. P. Preckel, L. Fizanne, J. Victor, J. M. Dupuis, and J. L. Saumet, “Effect of head-upright tilt on the dynamic of cerebral autoregulation,” Clinical Physiology, vol. 18, no. 1, pp. 41–47, 1998. View at Publisher · View at Google Scholar · View at Scopus
  6. R. A. Asher, “The dangers of going to bed,” The British Medical Journal, vol. 2, no. 4536, p. 967, 1947. View at Publisher · View at Google Scholar
  7. D. K. Dittmer and R. Teasell, “Complications of immobilization and bed rest—part 1: musculoskeletal and cardiovascular complications,” Canadian Family Physician, vol. 39, pp. 1428–1432, 1435–1437, 1993. View at Scopus
  8. R. Teasell and D. K. Dittmer, “Complications of immobilization and bed rest—part 2: other complications,” Canadian Family Physician, vol. 39, pp. 1440–1445, 1993. View at Scopus
  9. M. B. Drakulovic, A. Torres, T. T. Bauer, J. M. Nicolas, S. Nogué, and M. Ferrer, “Supine body position as a risk factor for nosocomial pneumonia in mechanically ventilated patients: a randomised trial,” The Lancet, vol. 354, no. 9193, pp. 1851–1858, 1999. View at Publisher · View at Google Scholar · View at Scopus
  10. J. E. Deitrick, G. D. Whedon, and E. Shorr, “Effects of immobilization upon various metabolic and physiologic functions of normal men,” The American Journal of Medicine, vol. 4, no. 1, pp. 3–36, 1948. View at Scopus
  11. J. A. Frontera, A. Fernandez, J. M. Schmidt et al., “Defining vasospasm after subarachnoid hemorrhage: what is the most clinically relevant definition?” Stroke, vol. 40, no. 6, pp. 1963–1968, 2009. View at Publisher · View at Google Scholar · View at Scopus
  12. R. W. Stremel, V. A. Convertino, E. M. Bernauer, and J. E. Greenleaf, “Cardiorespiratory deconditioning with static and dynamic leg exercise during bed rest,” Journal of Applied Physiology, vol. 41, no. 6, pp. 905–909, 1976. View at Scopus
  13. L. Svanberg, “Influence of posture on the lung volumes, ventilation and circulation in normals, a spirometric-bronchospirometric investigation,” Scandinavian Journal of Clinical & Laboratory Investigation, vol. 9, supplement 25, pp. 1–195, 1957. View at Publisher · View at Google Scholar
  14. T. Elizabeth, J. Singarayar, J. Ellul, D. Barer, and M. Lye, “Arterial oxygen saturation and posture in acute stroke,” Age and Ageing, vol. 22, no. 4, pp. 269–272, 1993. View at Scopus
  15. E. D. O'Connor and J. Walsham, “Should we mobilise critically ill patients? A review,” Critical Care and Resuscitation, vol. 11, no. 4, pp. 290–300, 2009. View at Scopus
  16. M. T. Torbey, T.-K. Hauser, A. Bhardwaj et al., “Effect of age on cerebral blood flow velocity and incidence of vasospasm after aneurysmal subarachnoid hemorrhage,” Stroke, vol. 32, no. 9, pp. 2005–2011, 2001. View at Scopus
  17. C. Charpentier, G. Audibert, F. Guillemin et al., “Multivariate analysis of predictors of cerebral vasospasm occurrence after aneurysmal subarachnoid hemorrhage,” Stroke, vol. 30, no. 7, pp. 1402–1408, 1999. View at Scopus
  18. Y. Zhang and A. A. Rabinstein, “Lower head of the bed position does not change blood flow velocity in subarachnoid hemorrhage,” Neurocritical Care, vol. 14, no. 1, pp. 73–76, 2011. View at Publisher · View at Google Scholar · View at Scopus
  19. P. A. Blissitt, P. H. Mitchell, D. W. Newell, S. L. Woods, and B. Belza, “Cerebrovascular dynamics with head-of-bed elevation in patients with mild or moderate vasospasm after aneurysmal subarachnoid hemorrhage,” American Journal of Critical Care, vol. 15, no. 2, pp. 206–216, 2006. View at Scopus