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Effect of the geometry and severity of left ventricular hypertrophy on cardiovascular mortality in dialysis patients

Yi-Chen Huang1,2, Chung-Kuan Wu3,4

  • 1Division of General Medicine, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan.

Kidney Research and Clinical Practice
|October 9, 2024
PubMed

Insights

Concentric left ventricular hypertrophy (LVH), particularly severe forms, significantly increases cardiovascular mortality risk in hemodialysis patients. This finding highlights the importance of assessing LVH geometry and severity in this population.

Area of Science:

  • Cardiology
  • Nephrology
  • Clinical Outcomes Research

Background:

  • Left ventricular hypertrophy (LVH) is a critical predictor of mortality in patients undergoing hemodialysis (HD).
  • The specific impact of LVH geometry and severity on cardiovascular and all-cause mortality in HD patients is not well-established.
  • Understanding these associations is crucial for risk stratification and management.

Purpose of the Study:

  • To investigate the relationship between different patterns and severities of LVH and clinical outcomes in chronic HD patients.
  • To determine if LVH geometry (concentric vs. eccentric) and severity influence cardiovascular and all-cause mortality.
  • To identify specific LVH characteristics associated with increased mortality risk.

Main Methods:

  • A monocentric retrospective cohort study involving chronic HD patients who underwent echocardiography.
  • Patients with LVH were categorized by geometry (concentric/eccentric) and severity (mild-to-moderate/severe).
  • Cox proportional hazard analysis was used to evaluate risks of cardiovascular and all-cause mortality.

Main Results:

  • Of 237 LVH patients, 131 had concentric and 106 had eccentric LVH.
  • Concentric LVH showed a higher crude hazard ratio for cardiovascular mortality compared to eccentric LVH (2.03).
  • Severe concentric LVH was a significant risk factor for all-cause (cHR: 2.58) and cardiovascular mortality (cHR: 3.73) compared to mild-to-moderate eccentric LVH, even after adjustment.

Conclusions:

  • Concentric LVH, particularly severe concentric LVH, is significantly associated with increased cardiovascular mortality in chronic HD patients.
  • LVH geometry and severity are important factors in predicting mortality risk in this patient group.
  • These findings underscore the need for detailed echocardiographic assessment of LVH in HD patients for improved prognostication.
Abstract

Keywords:
Left ventricular hypertrophyLeft ventricular remodelingsMortalityRenal dialysis

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