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Related Concept Videos

Heart Valves01:16

Heart Valves

The human heart is a complex organ with an intricate system of valves that regulate blood flow. There are two main types of valves: atrioventricular (AV) valves and semilunar valves.
The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...
Heart Failure I: Introduction01:27

Heart Failure I: Introduction

Heart failure refers to a clinical syndrome caused by structural or functional cardiac disorders that prevent the heart from pumping an adequate amount of blood to meet the body's metabolic needs. This condition often arises from myocardial infarction or ischemia, leading to decreased cardiac output, reduced tissue perfusion, impaired gas exchange, fluid volume imbalance, and decreased functional ability.Heart failure can result from disruptions in the mechanisms that regulate cardiac output...
Heart Failure V: Medical Management01:30

Heart Failure V: Medical Management

Medical Management of Acute Decompensated Heart Failure (ADHF)The primary goals of therapy for patients hospitalized with acute decompensated heart failure (ADHF) include:Relieving symptomsOptimizing volume statusSupporting oxygenation and ventilationMaintaining cardiac output (CO) and end-organ perfusionIdentifying and addressing the cause of ADHFPreventing complicationsProviding patient education on factors precipitating HF exacerbationPlanning for dischargeOngoing monitoring and assessment...
Heart Failure VI: Adjunct Therapies01:22

Heart Failure VI: Adjunct Therapies

Additional therapies for treating patients with heart failure (HF) may include procedural interventions, supplemental oxygen, the management of sleep disorders, and nutritional therapy.Procedural InterventionsImplantable Cardioverter-Defibrillator: For patients at risk of life-threatening arrhythmias due to severe left ventricular dysfunction, an Implantable Cardioverter-Defibrillator (ICD) can detect and terminate these arrhythmias, preventing sudden cardiac death and improving survival rates.
Cardiomyopathy II: Dilated Cardiomyopathy01:30

Cardiomyopathy II: Dilated Cardiomyopathy

Dilated cardiomyopathy, or DCM, is a progressive myocardial disorder characterized by ventricular chamber dilation and contractile dysfunction.EtiologyVarious factors can cause DCM, including hypertension and heavy alcohol intake, which contribute to the weakening and enlargement of the heart muscle. Viral infections, such as Coxsackievirus B, adenoviruses, and influenza, can lead to DCM by causing inflammation and damage to heart tissue. Certain chemotherapeutic agents, including daunorubicin,...
Cardiomyopathy V: Interprofessional Care01:29

Cardiomyopathy V: Interprofessional Care

Managing cardiomyopathy involves addressing underlying or precipitating causes, treating heart failure with medications, and implementing dietary changes and a balanced exercise and rest regimen.Lifestyle ModificationsCardiomyopathy patients should adopt a low-sodium diet to reduce fluid retention and manage heart failure. A personalized exercise and rest plan helps maintain physical fitness without overstraining the heart. Avoiding alcohol and tobacco is essential to prevent further damage to...

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Related Experiment Video

Updated: Jul 4, 2026

A Hydrogel Construct and Fibrin-based Glue Approach to Deliver Therapeutics in a Murine Myocardial Infarction Model.
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From Fiber Architecture to Functional Attachment: A Clinically Relevant, Mechanically Tunable Cardiac Patch.

Johannes Braig1, Ross Kent2, Ainitze Gereka Goienetxe2,3

  • 1Department of Functional Materials in Medicine and Dentistry, Institute of Biofabrication and Functional Materials, University of Würzburg and KeyLab Polymers For Medicine of the Bavarian Polymer Institute (BPI), Würzburg, Germany.

Advanced Materials (Deerfield Beach, Fla.)
|February 20, 2026
PubMed
Summary

Engineered cardiac patches, acting as biological ventricular assist devices (BioVADs), were optimized for myocardial infarction treatment. This novel design enhances mechanical support, promotes cell alignment, and ensures secure attachment for improved cardiac function.

Keywords:
biomechanicscardiac patchcardiac tissue engineeringmelt electrowritingmyocardial infarction

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Area of Science:

  • Biomaterials Science
  • Regenerative Medicine
  • Cardiovascular Engineering

Background:

  • Engineered cardiac patches show promise for myocardial infarction treatment as biological ventricular assist devices (BioVADs).
  • Optimal patch design and attachment are critical for mechanical support of damaged hearts but remain underexplored.
  • Current approaches lack personalized mechanical properties and robust integration strategies.

Purpose of the Study:

  • To develop and validate a personalized, multi-zonal engineered cardiac patch platform for myocardial infarction treatment.
  • To investigate the interplay between scaffold microarchitecture and mechanical properties for optimal cardiac support.
  • To evaluate the efficacy of the designed BioVAD in a preclinical myocardial infarction model.

Main Methods:

  • Computational modeling to design a multi-zonal microarchitecture (regenerative, force transmission, attachment zones).
  • Melt electrowriting (MEW) fabrication using a custom G-code generator.
  • Digital image correlation and biaxial testing to characterize scaffold mechanics and zonal strain differences.
  • Epicardial suture retention testing and dynamic BioVAD cultivation with cardiomyocytes.
  • In vivo evaluation in a porcine myocardial infarction model.

Main Results:

  • The scaffold exhibited distinct zonal mechanics with up to a 2.6-fold strain difference, mimicking native myocardium up to 10% strain.
  • A reinforced outline improved suture retention by 2.16-fold, enabling shape-morphing for attachment.
  • Dynamic cultivation significantly enhanced cardiomyocyte alignment (p = 0.01).
  • In vivo, the BioVAD achieved complete epicardial attachment and vascular ingrowth within 7 days.

Conclusions:

  • Melt electrowriting is a versatile platform for creating personalized cardiac scaffolds with tailored mechanical properties.
  • The developed multi-zonal BioVAD platform effectively supports tissue integration and cardiac function post-myocardial infarction.
  • This approach offers a promising strategy for developing next-generation cardiac regenerative therapies.