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Mechanism of Cardiac Arrhythmias

Mechanism of Cardiac Arrhythmias

Arrhythmias are irregular heart rhythms occurring when the heart's electrical impulses become abnormal. These disturbances can lead to various symptoms, depending on their severity and the underlying cause. Some common factors contributing to arrhythmias include hypoxia, ischemia, electrolyte imbalances, excessive catecholamine exposure, drug toxicity, and muscle overstretching. Arrhythmias can be classified into two main types based on the rate and site of origin of abnormal heart rhythms.

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Related Experiment Video

Updated: Dec 15, 2025

Generation of Murine Cardiac Pacemaker Cell Aggregates Based on ES-Cell-Programming in Combination with Myh6-Promoter-Selection

Generation of Murine Cardiac Pacemaker Cell Aggregates Based on ES-Cell-Programming in Combination with Myh6-Promoter-Selection

Published on: February 17, 2015

Biological pacemaker: from biological experiments to computational simulation.

Yacong Li¹, Kuanquan Wang¹, Qince Li^1,2

¹School of Computer Science and Technology, Harbin Institute of Technology, Harbin 150001, China.

Journal of Zhejiang University. Science. B

|July 8, 2020

Summary

This summary is machine-generated.

Biological pacemakers offer a promising alternative to electronic devices for treating heart rhythm disorders. Research combining gene therapy, cell therapy, and computational modeling aims to accelerate their clinical application.

Keywords:

Biological pacemaker; Gene therapy; Cell therapy; Cardiac simulation; Computational modeling

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In Silico Clinical Trials for Cardiovascular Disease

In Silico Clinical Trials for Cardiovascular Disease

Published on: May 27, 2022

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Last Updated: Dec 15, 2025

Generation of Murine Cardiac Pacemaker Cell Aggregates Based on ES-Cell-Programming in Combination with Myh6-Promoter-Selection

Generation of Murine Cardiac Pacemaker Cell Aggregates Based on ES-Cell-Programming in Combination with Myh6-Promoter-Selection

Published on: February 17, 2015

Microelectrode Array Recording of Sinoatrial Node Firing Rate to Identify Intrinsic Cardiac Pacemaking Defects in Mice

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Published on: July 5, 2021

In Silico Clinical Trials for Cardiovascular Disease

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Published on: May 27, 2022

Area of Science:

Cardiovascular Research
Biomedical Engineering
Computational Biology

Background:

Pacemaking dysfunction is a serious condition leading to heart rhythm disorders, syncope, and death.
Current electronic pacemakers have limitations including battery life, infection risk, and fixed pacing rates.
A biological pacemaker (bio-pacemaker) is needed to overcome these limitations.

Purpose of the Study:

To survey the contemporary development of bio-pacemakers.
To explore both experimental and computational approaches for bio-pacemaker generation.
To identify future research directions for bio-pacemaker development.

Main Methods:

Experimental approaches including gene therapy and cell therapy.
Computational approaches utilizing multi-scale computer models of the heart (single cell to tissue slice).
Review of current advancements and challenges in bio-pacemaker research.

Main Results:

Bio-pacemakers have shown success in large mammals.
Significant challenges remain before clinical application in human heart diseases.
Computational models show potential to expedite bio-pacemaker development.

Conclusions:

Bio-pacemakers represent a significant advancement over electronic devices.
Further research integrating experimental and computational methods is crucial.
Cardiac computational modeling is key to accelerating the generation of effective bio-pacemakers.