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Related Experiment Video

Updated: Jun 19, 2026

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Impact of cardiac patch alignment on restoring post-infarct ventricular function.

Koen L P M Janssens1, Peter H M Bovendeerd2

  • 1Department of Biomedical Engineering, Eindhoven University of Technology, 5600MB, Eindhoven, The Netherlands. k.l.p.m.janssens@tue.nl.

Biomechanics and Modeling in Mechanobiology
|August 1, 2024
PubMed
Summary
This summary is machine-generated.

Tissue-engineered cardiac patches can restore function after myocardial infarction (MI). Optimal patch orientation, aligned with native heart fibers, significantly improves pump function and reduces adverse remodeling, aiding heart failure recovery.

Keywords:
Cardiac patchComputational modelingMyocardial infarctionTissue engineering

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Area of Science:

  • Biomedical Engineering
  • Computational Biology
  • Cardiovascular Research

Background:

  • Acute myocardial infarction (MI) impairs cardiac function, leading to heart failure via adverse ventricular remodeling (AVR).
  • Tissue-engineered contractile patches offer a potential therapeutic strategy to restore cardiac function post-MI.

Purpose of the Study:

  • To investigate the impact of cardiac patch orientation and material properties on left ventricular (LV) pump function recovery after MI using a computational model.
  • To determine the optimal alignment of engineered cardiac patches relative to LV fibers for maximizing functional restoration.

Main Methods:

  • A finite element model of LV mechanics was developed to simulate MI by altering regional active stress and passive stiffness.
  • A rectangular cardiac patch was modeled, and its orientation relative to the LV circumferential plane was systematically varied.
  • The influence of material properties of healthy and infarcted tissue on model outcomes was also examined.

Main Results:

  • MI reduced stroke work by 34%.
  • Optimal patch orientation, parallel to the subepicardial fiber direction, restored 9% of lost cardiac functionality.
  • The engineered patch contributed to functional recovery through its own mechanical output and by improving the function of adjacent native myocardium.

Conclusions:

  • Cardiac patch orientation is a critical factor in restoring pump function after myocardial infarction.
  • Optimal alignment of engineered cardiac tissue with native myocardial fibers maximizes therapeutic benefit.
  • Engineered cardiac patches can enhance native tissue function through favorable mechanical boundary condition changes, contributing to overall cardiac repair.