NDLI: Propagation of depolarization and repolarization processes in the myocardium-an anisotropic model

Content Provider	IEEE Xplore Digital Library
Author	Adam, D.R.
Copyright Year	1964
Abstract	A three-dimensional finite-elements model of the left and right ventricles has been developed to study the process of myocardial electrical activation. The anisotropic properties are demonstrated during simulation of an abnormal cardiac cycle, when propagating is initiated at an ectopic ventricular site. Ischemia is simulated by low conduction velocities in the ischemic zone and wide dispersion of values in nearby locations; automaticity is described by restimulating cells in the injured area; the dangerous effects of a premature beat leading to reentry are simulated by reduction of propagation velocity in cells that are reactivated while they repolarized. The different activation patterns are calculated throughout the myocardium and on its surface. The generated surface activation maps are not sensitive to minute changes in location of the foci of activation within the normal conduction system. The maps show sensitivity to pathological velocities, ischemic areas, and the existence of ectopic foci. Thus, the model, with its distributed properties, may be useful for electrocardiographic studies due to its low sensitivity to normal cell-to-cell variability, but high sensitivity to the existence of abnormally propagating myocardial activity.<>
Sponsorship	IEEE Engineering in Medicine and Biology Society
Page Count	9
File Size	880290
Starting Page	133
Ending Page	141
File Format	PDF
ISSN	00189294
Volume Number	38
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1991-02-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Anisotropic magnetoresistance Myocardium Biomedical measurements Heart Shape measurement Biomembranes Geometry Pathology Surgery Biomedical engineering
Content Type	Text
Resource Type	Article
Subject	Biomedical Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Simulation of depolarization in a membrane-equations-based model of the anisotropic ventricle

Structural complexity effects on transverse propagation in a two-dimensional model of myocardium

Dipole and Quadrupole Measurements of an Isolated Turtle Heart

Electrical stimulation of cardiac tissue: a bidomain model with active membrane properties

Noninvasive imaging of cardiac transmembrane potentials within three-dimensional myocardium by means of a realistic geometry anisotropic heart model

Electrical conductivity values used with the bidomain model of cardiac tissue

A bidomain model for ring stimulation of a cardiac strand

Computer Simulation of Cardiac Propagation: Effects of Fiber Rotation, Intramural Conductivity, and Optical Mapping

Anode/cathode make and break phenomena in a model of defibrillation

Propagation of depolarization and repolarization processes in the myocardium-an anisotropic model

Similar Documents

Simulation of depolarization in a membrane-equations-based model of the anisotropic ventricle

Structural complexity effects on transverse propagation in a two-dimensional model of myocardium

Dipole and Quadrupole Measurements of an Isolated Turtle Heart

Electrical stimulation of cardiac tissue: a bidomain model with active membrane properties

Noninvasive imaging of cardiac transmembrane potentials within three-dimensional myocardium by means of a realistic geometry anisotropic heart model

Electrical conductivity values used with the bidomain model of cardiac tissue

A bidomain model for ring stimulation of a cardiac strand

Computer Simulation of Cardiac Propagation: Effects of Fiber Rotation, Intramural Conductivity, and Optical Mapping

Anode/cathode make and break phenomena in a model of defibrillation

Propagation of depolarization and repolarization processes in the myocardium-an anisotropic model