Cerebral blood flow autonomous regulation ability assessment method

Abstract

The invention discloses a cerebral blood flow autonomous regulation ability assessment method. The method comprises the following steps of: acquiring target tissue oxygen saturation and target average arterial pressure; obtaining a time-frequency map according to the target tissue oxygen saturation and the target average arterial pressure; determining a target time-frequency band from the time-frequency map, wherein the target time-frequency band comprises a time-frequency band in which the consistency of the target tissue oxygen saturation and the target average arterial pressure exceeds a preset threshold value; and, according to the mutual relation between the tissue oxygen saturation and the average arterial pressure in the target time-frequency band, assessing the cerebral blood flow autonomous regulation ability. Compared with a brain oxygen saturation index algorithm which only considers the time-domain correlation between the tissue oxygen saturation and the average arterial pressure, the invention has the advantages that: the time-domain correlation and the frequency-domain correlation between the tissue oxygen saturation and the average arterial pressure are considered at the same time, so that the autonomous regulation capability of cerebral blood flow can be evaluated more comprehensively, and the accuracy of assessing the autonomous adjustment ability of cerebral blood flow can be improved.

Description

technical field [0001] The invention relates to the technical field of data processing, in particular to a method for evaluating the ability of cerebral blood flow autoregulation. Background technique [0002] Cerebral autoregulation (Cerebral Autoregulation, CA) refers to: when systemic arterial blood pressure changes, resulting in changes in cerebral perfusion pressure in a large range, the brain adjusts the caliber of small cerebral blood vessels to make cerebral vascular resistance occur. Corresponding changes in cerebral blood flow to maintain constant a complex multifactorial process. When the arterial blood pressure rises or falls beyond the control ability of CA, the stability of cerebral blood flow (Cerebral Blood Flow, CBF) will not be maintained, and the secondary injury of the brain will easily increase. [0003] In related technologies, the cerebral blood flow autoregulation ability is mainly evaluated by the cerebral oxygen saturation index algorithm, however,...

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Problems solved by technology

[0004] The embodiment of the present application provides a method for evaluating the autoregulation ability of cerebral blood flow, which solves the technical problem that the autoregulation ability of cerebral blood flow cannot be accurately evaluated in the prior art, and achieves the goal of improving the accuracy of evaluating the autoregulation ability of cerebral blood flow. technical effect

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