Lack of linear correlation between dynamic and steady‐state cerebral autoregulation

摘要

Key points class="unordered" style="list-style-type:disc" id="tjp12472-list-0001">For correct application and interpretation of cerebral autoregulation (CA) measurements in research and in clinical care, it is essential to understand differences and similarities between dynamic and steady‐state CA.The present study found no correlation between dynamic and steady‐state CA indices in healthy older adults.There was variability between individuals in all (steady‐state and dynamic) autoregulatory indices, ranging from low (almost absent) to highly efficient CA in this healthy population.These findings challenge the assumption that assessment of a single CA parameter or a single set of parameters can be generalized to overall CA functioning. Therefore, depending on specific research purposes, the choice for either steady‐state or dynamic measures or both should be weighed carefully.