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Postural influence on intracranial fluid dynamics: an overview.
Arlan Faritovich Sagirov1, Timofey Vladimirovich Sergeev2, Aleksandr Vladimirovich Shabrov2
1Department of Ecological Physiology, Federal State Budgetary Scientific Institution "Institute of Experimental Medicine", 12 Academic Pavlov St, Saint-Petersburg, 197022, Russia. arlansagirov@gmail.com.
Journal of Physiological Anthropology
|April 13, 2023
Summary
Body position significantly impacts intracranial fluid dynamics, affecting cerebral blood flow, cerebrospinal fluid (CSF) movement, and intracranial pressure (ICP). Understanding these changes is crucial for craniospinal physiology.
Area of Science:
- Neuroscience
- Physiology
- Biomechanics
Background:
- Intracranial fluid dynamics are complex and influenced by various physiological factors.
- Understanding how body position affects these dynamics is essential for neurological health.
- Previous research has explored aspects of this topic, but a comprehensive review is needed.
Purpose of the Study:
- To review the effects of different body positions on intracranial fluid dynamics.
- To analyze cerebral arterial and venous flow, CSF hydrodynamics, and ICP.
- To discuss research methodologies for quantifying these effects.
Main Methods:
- Literature review of studies investigating body positions and intracranial fluid dynamics.
- Analysis of orthostatic, supine, and antiorthostatic positions.
- Focus on cerebrovascular autoregulation, microgravity, and head-down tilt (HDT).
Main Results:
- Body position significantly alters cerebral blood flow, venous outflow, and CSF circulation.
- Head-down tilt and microgravity present unique challenges to cerebrovascular autoregulation.
- Posture-dependent changes in ICP and intracranial compliance (ICC) are observed.
Conclusions:
- Different body positions induce significant changes in intracranial fluid dynamics.
- Further research can enhance understanding of intracranial and craniospinal physiology.
- This review synthesizes current knowledge on posture's impact on the intracranial environment.
Keywords:
Brain blood flowCerebral autoregulationCerebrospinal fluidCraniospinal systemHead-down tiltHead-up tiltIntracranial complianceIntracranial pressurePostural changesMore Related Videos
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