Hydraulic input impedance to aorta and pulmonary artery in dogs

Author:

Patel Dali J.,deFreitas Flavio M.1,Fry Donald L.1

Affiliation:

1. Section of Clinical Biophysics, Cardiology Branch, National Institutes of Health, Bethesda, Maryland

Abstract

Pressure-flow relationships were studied at the root of the aorta and the pulmonary artery in 18 dogs. The hydraulic input impedance to the vascular bed was calculated as a complex ratio of the corresponding pressure and flow harmonics. Results indicate: a) The predominant features of the load against which the heart is pumping consists of an impedance with a magnitude that initially decreases rapidly with frequency and then increases gradually with frequency. In general, pressure tends to lag behind flow for all harmonics. b) The input impedance versus frequency patterns provided a logical basis for choosing various simple electrical networks which can be used to characterize in a compact manner the general features of the hydraulic load presented to the ventricles. c) The hazards of using such simple networks to define the physical properties of the vascular system are pointed out. Submitted on July 5, 1962 Submitted on July 30, 1962

Publisher

American Physiological Society

Subject

Physiology (medical),Physiology

Cited by 85 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Arterial pulse wave modeling and analysis for vascular-age studies: a review from VascAgeNet;American Journal of Physiology-Heart and Circulatory Physiology;2023-07-01

2. Assessment of ventricular arterial interactions via arterial pressure-flow relations in humans;Textbook of Arterial Stiffness and Pulsatile Hemodynamics in Health and Disease;2022

3. Essential principles of pulsatile pressure-flow relations in the arterial tree;Textbook of Arterial Stiffness and Pulsatile Hemodynamics in Health and Disease;2022

4. Pulsatile Perfusion Bioreactor for Biomimetic Vascular Impedances;Journal of Medical Devices;2018-09-21

5. Physiological insights of recent clinical diagnostic and therapeutic technologies for cardiovascular diseases;The Journal of Physiological Sciences;2017-07-05

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3