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Related Experiment Videos

Which definition for echocardiographic left ventricular hypertrophy?

E Abergel1, M Tase, J Bohlender

  • 1Centre d'Investigations Cliniques, Hôpital Broussais, Paris, France.

The American Journal of Cardiology
|March 1, 1995
PubMed
Summary

Diagnosing left ventricular (LV) hypertrophy varies significantly based on chosen LV mass thresholds. This study highlights the need for standardized definitions to accurately assess LV hypertrophy prevalence in hypertensive patients.

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Area of Science:

  • Cardiology
  • Medical Diagnostics
  • Hypertension Research

Background:

  • Left ventricular (LV) hypertrophy is diagnosed using LV mass measurements from echocardiography.
  • Existing diagnostic thresholds for LV hypertrophy vary considerably between men and women.
  • These variations in thresholds can impact the perceived prevalence of LV hypertrophy.

Purpose of the Study:

  • To evaluate how different LV hypertrophy threshold values affect prevalence estimates in hypertensive patients.
  • To compare the impact of height-indexed versus body surface area-indexed thresholds on LV hypertrophy prevalence.
  • To advocate for standardized definitions of LV hypertrophy.

Main Methods:

  • LV mass was calculated in 349 hypertensive patients using M-mode echocardiography tracings.

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  • Prevalence of LV hypertrophy was assessed using multiple published threshold values.
  • Comparisons were made between height-indexed and body surface area-indexed thresholds, particularly in obese patients.

    • Main Results:

    • The prevalence of LV hypertrophy ranged widely from 17% to 39% depending on the threshold applied.
    • Obese patients showed higher LV hypertrophy prevalence with height-indexed thresholds compared to body surface area-indexed thresholds.
    • Normalized thresholds can partially reduce variations caused by different indexation methods.

    Conclusions:

    • The choice of LV hypertrophy diagnostic threshold significantly influences prevalence rates in hypertensive populations.
    • Standardization of LV hypertrophy definitions is crucial for accurate diagnosis and consistent clinical management.
    • Future standardization efforts may involve large-scale normality studies or meta-analyses for risk stratification.