Delmar's Standard Textbook Of Electricity
Delmar's Standard Textbook Of Electricity
7th Edition
ISBN: 9781337900348
Author: Stephen L. Herman
Publisher: Cengage Learning
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Question
The functioning of the mitral valve is of considerable clinical interest. The filling of the left ventricle occurs during diastole, and blood moves from the left atrium into the ventricle. The left atrium during diastole has constant flow from the lungs, Qi(t), into the chamber with compliance CLA. The model of the flow through the open mitral valve comprises the blood (across the valve) with inertance, L₁, and resistance of the valve, R. The model of the left ventricle during diastole comprises mainly the properties of the ventricular tissue. (Since there is no blood flowing through the chamber, the blood volume and associated mass are not important.) The ventricular tissue has passive properties, mass inertance Lm, resistance Rm, and compliance CLV. The ventricular muscle as it relaxes during systole presents a decreasing resisting pressure, Pr(t) = Poet (this is the model of the muscle relaxing after contraction). The pressure exerted on the passive components of the ventricle is Pb(t) - P,(t). Draw the electrical analogy of the left side of the heart during diastole.
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Transcribed Image Text:The functioning of the mitral valve is of considerable clinical interest. The filling of the left ventricle occurs during diastole, and blood moves from the left atrium into the ventricle. The left atrium during diastole has constant flow from the lungs, Qi(t), into the chamber with compliance CLA. The model of the flow through the open mitral valve comprises the blood (across the valve) with inertance, L₁, and resistance of the valve, R. The model of the left ventricle during diastole comprises mainly the properties of the ventricular tissue. (Since there is no blood flowing through the chamber, the blood volume and associated mass are not important.) The ventricular tissue has passive properties, mass inertance Lm, resistance Rm, and compliance CLV. The ventricular muscle as it relaxes during systole presents a decreasing resisting pressure, Pr(t) = Poet (this is the model of the muscle relaxing after contraction). The pressure exerted on the passive components of the ventricle is Pb(t) - P,(t). Draw the electrical analogy of the left side of the heart during diastole.
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