可控关闭体积心脏瓣膜模型

Translated title of the contribution: Heart valve model with controllable closing volume

Zhaoming He, Yanfang Liu, Teng Jing, Guijie Zhang, Hongyan Liu, Hao Wang

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

In order to accurately describe hemodynamics of heart valve and its application in the cardiovascular system, the heart valve as a variable resistor and a current source in parallel was mode-led and then a constant inductance in series according to electric-liquid analogy. The governing equations of the left ventricular circulation were derived. The heart valve model divided the flow into two branches: flow through valve orifice and flow displaced by valve leaflets. The resistance depended on leaflet position and the heart valve closing motion was controlled with specified closing volume. For the mitral valve, Matlab was used to solve these equations to obtain circulation hemodynamics, which reflected the closing and leaking characteristics of the heart valve. The closing and leakage volumes were 3.30 mL and 2.30 mL, respectively, at stroke volume 63.60 mL or the normal cardiac output 4.58 L/min. The closing and leakage volumes were 14.70 mL and 25.40 mL, respectively, at the mitral regurgitation. This model can be used to simulate hemodynamics of the normal and regurgitated heart valve and thus arterial hemodynamics.

Translated title of the contributionHeart valve model with controllable closing volume
Original languageChinese
Pages (from-to)1-6 and 37
JournalPaiguan Jixie Gongcheng Xuebao/Journal of Drainage and Irrigation Machinery Engineering
Volume37
Issue number1
DOIs
StatePublished - Jan 28 2019

Keywords

  • Closing volume
  • Leakage volume
  • Left heart circulates
  • Regurgitation model
  • heart valve

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