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The importance of pulsatile microcirculation in relation to hypertension

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5 Author(s)
Ming-Yie Jan ; Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan ; Hsin Hsiu ; Tse-Lin Hsu ; Yuh-Ying Lin Wang
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The aim of the study presented was to prove that increased pulsatile blood pressure (PBP) increases perfusion in peripheral vascular beds (PVBs). We used a laser Doppler flowmeter (LDF) to measure surface renal cortical flux (RCF) and a pressure-tip transducer catheter to measure abdominal aortic blood pressure (AABP). Besides demonstrating the relationship between RCF and AABP by linear regressive analysis with an averaged periodogram (AP), we also used time-domain pulse averaging to clarify the pulsatile AABP and RCF. Furthermore, we define a flux-to-pressure-area ratio (FPAR) to evaluate the efficiency by which the pulsatile AABP drives RCF

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Engineering in Medicine and Biology Magazine, IEEE  (Volume:19 ,  Issue: 3 )