منابع مشابه
Microvascular rheology and hemodynamics.
The goal of elucidating the biophysical and physiological basis of pressure-flow relations in the microcirculation has been a recurring theme since the first observations of capillary blood flow in living tissues. At the birth of the Microcirculatory Society, seminal observations on the heterogeneous distribution of blood cells in the microvasculature and the rheological properties of blood in ...
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The microcirculation is a complex and integrated system that supplies and distributes oxygen throughout the tissues. The red blood cell (RBC) facilitates convective oxygen transport via co-operative binding with hemoglobin. In the microcirculation oxygen diffuses from the RBC into neighboring tissues, where it is consumed by mitochondria. Evidence suggests that the RBC acts as deliverer of oxyg...
متن کاملOscillatory cerebral hemodynamics--the macro- vs. microvascular level.
The phase shift between oscillations of blood pressure (BP) and Doppler middle cerebral artery flow velocity (MCAFV) reflects continuous cerebral autoregulatory action. It is not known whether a similar phase shift exists for cortical hemodynamics ('microvascular level') assessed by near infrared spectroscopy (NIRS) and what the effects are of pathological conditions. This study investigates th...
متن کاملSelective fibrinogen apheresis for improvement in microvascular hemodynamics.
vascular stores with the intravascular compartment, followed by a slower rate of resynthesis. Twenty-four hours after treatment, fibrinogen levels are 50% of initial levels, while it may require 72 h or more to attain levels which are 75% of pretreatment values [5] . When multiple treatments are performed over a short period (i.e. three or more treatments per week), the depletion is more pronou...
متن کاملAssessment of Conjunctival Microvascular Hemodynamics in Stages of Diabetic Microvasculopathy
Diabetes impairs the microcirculation and function of various vital tissues throughout the body. The conjunctival microcirculation can be non-invasively imaged and thus enables assessment of microvascular hemodynamics. In this study, alterations in conjunctival microvascular hemodynamics were quantitatively assessed at stages of increasing diabetic microvasculopathy based on diabetic retinopath...
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ژورنال
عنوان ژورنال: Critical Care Clinics
سال: 2020
ISSN: 0749-0704
DOI: 10.1016/j.ccc.2019.12.011