Blood pressure regulation IX: cerebral autoregulation under blood pressure challenges
Cerebral autoregulation (CA) is integral to the delicate process of maintaining stable cerebral perfusion and brain tissue oxygenation against changes in arterial blood pressure. The last four decades has seen dramatic advances in understanding CA physiology, and the role that CA might play in the c...
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| Format: | Online |
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Springer Berlin Heidelberg
2013
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| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3929776/ |
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pubmed-3929776 |
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pubmed-39297762014-02-25 Blood pressure regulation IX: cerebral autoregulation under blood pressure challenges Tzeng, Yu-Chieh Ainslie, Philip N. Invited Review Cerebral autoregulation (CA) is integral to the delicate process of maintaining stable cerebral perfusion and brain tissue oxygenation against changes in arterial blood pressure. The last four decades has seen dramatic advances in understanding CA physiology, and the role that CA might play in the causation and progression of disease processes that affect the cerebral circulation such as stroke. However, the translation of these basic scientific advances into clinical practice has been limited by the maintenance of old constructs and because there are persistent gaps in our understanding of how this vital vascular mechanism should be quantified. In this review, we re-evaluate relevant studies that challenge established paradigms about how the cerebral perfusion pressure and blood flow are related. In the context of blood pressure being a major haemodynamic challenge to the cerebral circulation, we conclude that: (1) the physiological properties of CA remain inconclusive, (2) many extant methods for CA characterisation are based on simplistic assumptions that can give rise to misleading interpretations, and (3) robust evaluation of CA requires thorough consideration not only of active vasomotor function, but also the unique properties of the intracranial environment. Springer Berlin Heidelberg 2013-06-05 2014 /pmc/articles/PMC3929776/ /pubmed/23737006 http://dx.doi.org/10.1007/s00421-013-2667-y Text en © The Author(s) 2013 Open AccessThis article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. |
| repository_type |
Open Access Journal |
| institution_category |
Foreign Institution |
| institution |
US National Center for Biotechnology Information |
| building |
NCBI PubMed |
| collection |
Online Access |
| language |
English |
| format |
Online |
| author |
Tzeng, Yu-Chieh Ainslie, Philip N. |
| spellingShingle |
Tzeng, Yu-Chieh Ainslie, Philip N. Blood pressure regulation IX: cerebral autoregulation under blood pressure challenges |
| author_facet |
Tzeng, Yu-Chieh Ainslie, Philip N. |
| author_sort |
Tzeng, Yu-Chieh |
| title |
Blood pressure regulation IX: cerebral autoregulation under blood pressure challenges |
| title_short |
Blood pressure regulation IX: cerebral autoregulation under blood pressure challenges |
| title_full |
Blood pressure regulation IX: cerebral autoregulation under blood pressure challenges |
| title_fullStr |
Blood pressure regulation IX: cerebral autoregulation under blood pressure challenges |
| title_full_unstemmed |
Blood pressure regulation IX: cerebral autoregulation under blood pressure challenges |
| title_sort |
blood pressure regulation ix: cerebral autoregulation under blood pressure challenges |
| description |
Cerebral autoregulation (CA) is integral to the delicate process of maintaining stable cerebral perfusion and brain tissue oxygenation against changes in arterial blood pressure. The last four decades has seen dramatic advances in understanding CA physiology, and the role that CA might play in the causation and progression of disease processes that affect the cerebral circulation such as stroke. However, the translation of these basic scientific advances into clinical practice has been limited by the maintenance of old constructs and because there are persistent gaps in our understanding of how this vital vascular mechanism should be quantified. In this review, we re-evaluate relevant studies that challenge established paradigms about how the cerebral perfusion pressure and blood flow are related. In the context of blood pressure being a major haemodynamic challenge to the cerebral circulation, we conclude that: (1) the physiological properties of CA remain inconclusive, (2) many extant methods for CA characterisation are based on simplistic assumptions that can give rise to misleading interpretations, and (3) robust evaluation of CA requires thorough consideration not only of active vasomotor function, but also the unique properties of the intracranial environment. |
| publisher |
Springer Berlin Heidelberg |
| publishDate |
2013 |
| url |
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3929776/ |
| _version_ |
1612060212274921472 |