{"title":"Vascular resistance at low frequencies may explain the physiological role of Mayer waves: A fractal arterial tree model study","authors":"T. Buchner, Tomasz Sobiech","doi":"10.1109/ESGCO.2014.6847575","DOIUrl":null,"url":null,"abstract":"We numerically investigate a 1-D mathematical model of blood flow related with harmonic blood pressure modes (BP) in the fractal model of a human arterial tree [1]. We calculated the model admittance: inverse of the Total Peripheral Resistance (TPR) as a function of frequency. We show that the peak of admittance (maximum flow) may appear at low frequency, below 1 Hz. Total flow in presence of such low frequency oscillations is higher than without it. Introduction of these oscillations by cardiovascular regulatory loops may provide a supplementary mechanism which can increase the total blood flow (venous return) in situations of increased demand. The result may add new value to the analysis of the Mayer waves.","PeriodicalId":385389,"journal":{"name":"2014 8th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2014-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2014 8th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ESGCO.2014.6847575","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
We numerically investigate a 1-D mathematical model of blood flow related with harmonic blood pressure modes (BP) in the fractal model of a human arterial tree [1]. We calculated the model admittance: inverse of the Total Peripheral Resistance (TPR) as a function of frequency. We show that the peak of admittance (maximum flow) may appear at low frequency, below 1 Hz. Total flow in presence of such low frequency oscillations is higher than without it. Introduction of these oscillations by cardiovascular regulatory loops may provide a supplementary mechanism which can increase the total blood flow (venous return) in situations of increased demand. The result may add new value to the analysis of the Mayer waves.
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