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Related Concept Videos

Potentiometry: Membrane Electrodes01:15

Potentiometry: Membrane Electrodes

Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at the...

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Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing
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Posterior body surface potential mapping using capacitive-coupled electrodes and its application.

Youngjin Cho1, Seungmin Lee, Eue-Keun Choi

  • 1Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea.

Journal of Korean Medical Science
|December 21, 2012
PubMed
Summary
This summary is machine-generated.

A novel mattress-type harness creates posterior body surface potential maps (P-BSPM) for diagnosing old myocardial infarction (OMI). P-BSPM effectively identifies inferior myocardial infarction with high accuracy.

Keywords:
Body Surface Potential MapElectrocardiographyMyocardial Infarction

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Area of Science:

  • Cardiology
  • Biomedical Engineering
  • Medical Imaging

Background:

  • Traditional electrocardiograms (ECG) have limitations in fully characterizing cardiac electrical activity.
  • Assessing posterior cardiac electrical signals non-invasively in dressed individuals remains a challenge.

Purpose of the Study:

  • To develop and evaluate a mattress-type harness system for generating posterior body surface potential maps (P-BSPM).
  • To investigate the diagnostic value of P-BSPM in discriminating old myocardial infarction (OMI) and other cardiac conditions.

Main Methods:

  • A novel mattress-type harness with 49 capacitive-coupled electrodes was developed.
  • Posterior body surface potential maps (P-BSPM) were recorded from 59 individuals (23 controls, 11 RBBB, 3 LBBB, 19 OMI).
  • Principal component analysis and linear hyper-plane approach were used for diagnostic performance evaluation.

Main Results:

  • P-BSPM vector potential axes correlated well with standard 12-lead ECG.
  • Characteristic vector potential rotations were observed in right bundle branch block (RBBB) and left bundle branch block (LBBB) patients.
  • P-BSPM during QRS showed high accuracy in diagnosing overall OMI (AUC=0.83) and particularly inferior MI (AUC=0.98).

Conclusions:

  • The developed P-BSPM system provides detailed insights into cardiac electrical dynamics.
  • P-BSPM is a valuable, non-invasive tool for diagnosing old myocardial infarction (OMI), especially inferior MI.
  • This technology offers a promising advancement in non-invasive cardiac diagnostics.