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Updated: Jun 8, 2026

The Isolation and Culture of Primary Epicardial Cells Derived from Human Adult and Fetal Heart Specimens

The Isolation and Culture of Primary Epicardial Cells Derived from Human Adult and Fetal Heart Specimens

Published on: April 24, 2018

Tissue-specific variability in human epicardial impedance.

Jason T Jacobson¹, Mathew D Hutchinson, Joshua M Cooper

¹Division of Cardiology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA. jjacobson@northwestern.edu

Journal of Cardiovascular Electrophysiology

|October 16, 2010

Summary

This summary is machine-generated.

Human epicardial fat exhibits higher tissue impedance than normal myocardium. This finding may improve the differentiation of arrhythmia substrates and enhance epicardial ablation efficacy.

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In Vitro Culture of Epicardial Cells From Mouse Embryonic Heart

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Last Updated: Jun 8, 2026

The Isolation and Culture of Primary Epicardial Cells Derived from Human Adult and Fetal Heart Specimens

The Isolation and Culture of Primary Epicardial Cells Derived from Human Adult and Fetal Heart Specimens

Published on: April 24, 2018

In Vitro Culture of Epicardial Cells From Mouse Embryonic Heart

In Vitro Culture of Epicardial Cells From Mouse Embryonic Heart

Published on: April 27, 2016

Area of Science:

Cardiovascular Research
Biomedical Engineering
Electrophysiology

Background:

Epicardial ablation is used for ventricular tachycardia treatment.
Epicardial fat can mimic scar tissue, reducing ablation specificity.
Fat ablation may be less effective than scar ablation.

Purpose of the Study:

To test if human epicardial fat has higher impedance than myocardium.
To assess the utility of impedance measurements in differentiating cardiac tissues.
To improve epicardial ablation strategies.

Main Methods:

Patients undergoing cardiac surgery were enrolled.
Impedance was measured using a standard radiofrequency generator and ablation catheter.
Measurements were taken on epicardial fat and myocardium in ventricular regions.

Main Results:

Epicardial fat demonstrated significantly higher impedance (697 Ω) than normal myocardium (301 Ω).
Left ventricular myocardium showed higher impedance (381 Ω) than right ventricular myocardium (271 Ω).
A total of 37 measurement points were sampled from 7 patients.

Conclusions:

Human epicardial fat has higher tissue impedance compared to normal myocardium.
Combining epicardial impedance and voltage mapping can enhance substrate differentiation.
This approach may improve the effectiveness of epicardial ablation for arrhythmias.