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1st Student's Major

Integrated Engineering

1st Student's College

Science, Engineering and Technology

Students' Professional Biography

ANDREW MCNALLY, from Chisago City, MN, is attending the Iron Range Engineering program at Minnesota State University – Mankato. Andrew is studying to complete a B.S. in Engineering with emphases in mechanical engineering an biomedical engineering, in December 2011. Andrew Spent the summer interning at Medtronic for the Perfusion Systems Manufacturing Engineering group where he helped to support several product lines, worked to implement various process improvements, and lead a project to replace a piece of capital equipment. Upon graduation Andrew plans to work for several years in order to build some experience, then to seek master’s degrees in the areas of mathematic and biomedical engineering. His ultimate career goal is to become an engineering educator. MATTHEW KORPELA, from Squaw Lake, MN, is currently attending Iron Range Engineering, a new upper division program from the University of Minnesota – Mankato. He interned for the Minnesota DNR where he used ArcGIS software for interpolating photographs across Minnesota. He also took part in undergraduate research in astrophysics from the University of Toledo. There he studied the newly defined Be star “Delta Scorpii” and the H-alpha lines that were being emitted, under the supervision of Dr. Karen Bjorkman, Department Chair and Ph.D. The days after graduation may lead him in many directions, but he is currently perusing a career in Biomedical Engineering. ERIN LAMKE, from the small northern Minnesota town, Hill City, is attending Iron Range Engineering (IRE), a program through Minnesota State University – Mankato. Erin is studying Engineering (mechanical) and will graduate with her B.S.E degree in December 2011. Erin spent the summer interning at Medtronic for the Perfusions Systems Supplier Quality Engineering group where she helped to drive quality and continuous improvement to deliver excellence in products, processes, services and relationships. Erin was asked to stay on and will be co-oping part time for her final semester at IRE. Upon graduation Erin hopes to continue her career at Medtronic and attend grad school to get her MBA. MATT HUDSON, from Shoreview, MN, is currently a senior studying engineering (mechanical) at Iron Range Engineering, a Minnesota State University, Mankato program. Matt, along with his business partner Eric Schaupp, recently won the 2011 Student Division of the Minnesota Cup entrepreneurial competition. With the guidance of Dr. Dan Ewert and Dr. Queen Booker, Matt researched a new, innovative approach to portable power generation. Upon graduation in May 2012, Matt will begin working as an engineer at Procter & Gamble in Cincinnati, Ohio.

Mentor's Name

Ronald Ulseth

Mentor's Email Address

ronald.ulseth@mnsu.edu

Mentor's Department

Integrated Engineering

Mentor's College

Science, Engineering and Technology

Abstract

In an effort to research heart failure, a leading cause of death in the industrialized world, this research team has developed a segmented lumped parameter model of the left ventricle. The computations model developed focuses on dyssynchrony, a heart condition where some regions of the heart vary significantly in properties like internal muscle resistance, mass, or elastance. Inertial effects are often assumed as negligible by cardiovascular models. One primary function of this model is to investigate inertial effects as they relate to mechanical cardiac dyssynchrony. An added dimension of this analysis is to observe the thermodynamics of the cardiac cycle as one long term indicator of heart failure. This model was developed using an electrical analog to the hemodynamic system. The parameters of a heart wall segment were represented by resistance, inductance, and capacitance. The calculations were done using state space and programmed into Matlab for simulation. This research shows waveforms of volume outputs as well as pressure volume loops for synchronous waveforms as well as dyssychronous waveforms caused by a time delay, varied resistance, varied elastance, and varied mass. The variation seen in the mass dyssynchrony waveforms suggest that inertial effect may be a significant factor in modeled cardiovascular systems.

Creative Commons License

Creative Commons Attribution-Noncommercial 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial 4.0 License

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