Electrocardiographic diagnosis of left ventricular hypertrophy: depolarization changes

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Published on: December 28, 2012

Ljuba Bacharova1, E Harvey Estes

  • 1Department of Biophotonics, International Laser Center, Bratislava, Slovak Republic. bacharova@ilc.sk

Journal of Electrocardiology
|April 29, 2009
PubMed

Insights

Electrocardiographic signs of left ventricular hypertrophy (LVH) are crucial cardiovascular risk factors, despite low sensitivity. A new paradigm focusing on electrical remodeling of hypertrophied myocardium offers a better explanation for diverse ECG patterns in LVH detection.

Area of Science:

  • Cardiology
  • Medical Diagnostics
  • Biophysics

Background:

  • Electrocardiographic (ECG) signs of left ventricular hypertrophy (LVH) are established cardiovascular risk factors and indicators of target organ damage in hypertension.
  • However, current ECG criteria for LVH detection are criticized for their low sensitivity.

Purpose of the Study:

  • To present a historical perspective on ECG diagnosis of LVH.
  • To propose a paradigm shift in LVH diagnosis based on electrical remodeling of hypertrophied myocardium.

Main Methods:

  • Historical review of ECG diagnostic criteria for LVH.
  • Analysis of current understanding of myocardial electrical remodeling in LVH.
  • Theoretical framework development for a new diagnostic paradigm.

Main Results:

  • The study traces the evolution of ECG use in LVH detection.
  • It highlights the limitations of current sensitivity.
  • A new paradigm is proposed, explaining diverse ECG findings through electrical property changes in hypertrophied myocardium.

Conclusions:

  • A paradigm shift towards understanding electrical remodeling in LVH is necessary.
  • This approach can explain the wide spectrum of ECG patterns observed in LVH, including increased voltage, prolonged QRS duration, and specific conduction abnormalities.
  • This may improve the diagnostic utility of ECG for LVH.

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