Fluctuations in Cerebral Hemodynamics
Abstract
We demonstrate that the scaling properties of intracranial pressure (ICP) fluctuations and fluctuations of blood flow velocity in middle cerebral arteries are characterized by two scaling exponents. The short-time scaling exponent (STSE) determines the statistical properties of fluctuations in short-time intervals while the Hurst exponent describes the long-term fractal properties. Thus, the scaling properties of cerebral hemodynamics are reminiscent of those of arterial blood pressure (ABP). Specifically, in physiological conditions the mean value of arterial and cerebral short-time scalina exponents coincide. However, in patients with severe brain injuries the integrity of cerebral hemodynamics are reminiscent of those of arterial blood pressure (ABP).
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 2003
- Accession Number
- ADA425143
Entities
People
- Dariusz Latka
- Miroslaw Latka
Organizations
- University of Wrocław