Capillary transit time
WebSep 1, 1996 · In the second method, we estimated capillary transit time by measuring capillary blood volume by the diffus- ing capacity method and dividing it by blood flow. Capillary transit time from both methods decreased from 0.5-0.6 sec at the basal blood flow of 80 ml min i kg-~ to 0.14-0.17 sec with a 3- to 6-fold increase in blood flow. WebSep 24, 2012 · The 2 major determinants of alveolar-capillary diffusion are: (i) the transit time of the red blood cells in the pulmonary capillary; and (ii) the distance for diffusion. During exercise in untrained individuals, the …
Capillary transit time
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WebIt takes about 0.25 seconds for the gas-blood interface to reach equilibrium, which is approximately one-third of the blood's transit time through the lungs. However during …
WebFeb 9, 2024 · The roles of cerebral blood flow, capillary transit time heterogeneity, and oxygen tension in brain oxygenation and metabolism. J Cereb Blood Flow Metab 2012; 32: 264–277. Crossref. PubMed. ISI. Google Scholar. 67. Hudetz AG, Biswal BB, Fehér G, et al. Effects of hypoxia and hypercapnia on capillary flow velocity in the rat cerebral cortex. WebCapillary dysfunction can be quantified by capillary transit time heterogeneity (CTH) which is the standard deviation of the transit time distribution. In their seminal study, Jespersen and Østergaard (2012) …
Webdetermine the effects of capillary dysfunction on oxygen extraction, the distribution of erythrocyte velocities or transit times across the capillary bed must be known.5,14,17,20,21 For convenience, we quantify capil-lary dysfunction by the accompanying capillary transit time heterogeneity (CTH) and use accepted transit time WebAug 14, 2024 · Red blood cell pulmonary capillary transit time during exercise in athletes. Med Sci Sports Exerc 1991;23:1353-61. Peacher DF, Martina SD, Otteni CE, Wester TE, Potter JF, Moon RE. Immersion pulmonary edema and comorbidities: case series and updated review. Med Sci Sports Exerc 2015;47:1128-34.
WebNov 11, 2024 · A high degree of capillary transit time heterogeneity (CTH) describes that some capillaries have very low blood flows, while others have excessively high blood flows and consequently short transit times. Very …
WebSep 1, 1996 · Capillary transit times averaged 0.50–0.62 sec at a control blood flow of 80 ml min −1 kg −1 and decreased to 0.14–0.18 sec as blood flow increased to 6 times control. To determine whether the reduced transit time would limit O 2 transport, we studied the effect of blood flow on oxygenation. Two isolated rabbit lungs were perfused in series. scratch 40WebDec 1, 1991 · Capillary transit time at rest is about 1.5 s and can drop to 0.42 s during exercise (Warren et al., 1991) leading to decreased oxygen saturation. scratch 4017752WebOct 6, 2015 · Recently, however, it has become clear that much of the flow increase is generated by dilation of capillaries, rather than of arterioles (which dilate more slowly), and that this is achieved by a relaxation of contractile pericytes.3,4Pericytes also play a key role in pathology: in ischaemia pericytes constrict capillaries, trapping blood cells, … scratch 40 download free windowsWebSep 9, 2014 · A review taking into account the literature reports covering 20 years of fatty acid analysis by capillary electrophoresis is presented. This paper describes the evolution of fatty acid analysis using different CE modes such as capillary zone electrophoresis, non-aqueous capillary electrophoresis, micellar electrokinetic capillary chromatography and … scratch 40 downloadWebFeb 8, 2016 · Capillaries were randomly selected within the FOV of the previously scanned area by bolus passage, and the axial and transversal scans were performed over 1–6 selected capillaries with the line-scan period of 1–7 ms. scratch 4010451WebNov 2, 2011 · Capillary transit time distributions, therefore, reflect the underlying distribution of capillary lengths, as well as the velocity distribution of RBCs. Also, … scratch 403WebDec 1, 1998 · Potential mechanisms of hypoxemia in pulmonary embolism include regions of low ventilation-to-perfusion ratio (V˙ a /Q˙) (2, 20), right-to-left shunting of deoxygenated blood (1, 23), diffusion limitation at the … scratch 4012578