Prevalence, clinical characteristics, and outcomes associated with eccentric versus concentric left ventricular

Daniel H Katz1, Lauren Beussink, Andrew J Sauer

  • 1Division of Cardiology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois.

Insights

Eccentric hypertrophy (EH) in heart failure with preserved ejection fraction (HFpEF) patients presents unique characteristics, including reduced contractility and increased compliance. Despite these differences, EH and concentric hypertrophy (CH) share similar adverse outcomes in HFpEF.

Area of Science:

  • Cardiology
  • Cardiovascular Imaging
  • Heart Failure Research

Background:

  • Heart failure with preserved ejection fraction (HFpEF) commonly involves concentric remodeling or hypertrophy.
  • Eccentric hypertrophy (EH), though less common, also occurs in HFpEF but remains poorly characterized.
  • Understanding distinct left ventricular (LV) structural patterns is crucial for HFpEF management.

Purpose of the Study:

  • To delineate the clinical, hemodynamic, and prognostic features of eccentric hypertrophy (EH) in patients with HFpEF.
  • To compare EH with other LV geometric patterns, particularly concentric hypertrophy (CH).
  • To identify potential therapeutic implications for EH in HFpEF.

Main Methods:

  • Prospective study of 402 HFpEF patients categorized into four LV structure groups: normal geometry, concentric remodeling (CR), concentric hypertrophy (CH), and eccentric hypertrophy (EH).
  • Comprehensive assessment including clinical data, laboratory tests, echocardiography, and invasive hemodynamics.
  • Statistical analysis to compare characteristics and outcomes among the groups, with covariate adjustment.

Main Results:

  • Eccentric hypertrophy (EH) was identified in 12% (48/402) of HFpEF patients.
  • Compared to CH, EH patients exhibited lower systolic blood pressure and less renal impairment, despite similar hypertension rates.
  • EH was associated with reduced LV contractility (lower LVEF, SBP/ESV ratio) and increased LV compliance (higher LVEDV at 20 mmHg EDP) versus CH.
  • Despite distinct functional differences, EH and CH demonstrated similar elevated cardiac filling pressures and comparable adverse clinical outcomes.

Conclusions:

  • Eccentric hypertrophy (EH) represents a distinct pathophysiological phenotype within HFpEF.
  • The functional profile of EH in HFpEF resembles that of heart failure with reduced ejection fraction (HFrEF).
  • Patients with EH in HFpEF may potentially benefit from therapies currently used for HFrEF.

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