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Clinicopathological profiles of progressive heart failure in hypertrophic cardiomyopathy

Paola Melacini1, Cristina Basso, Annalisa Angelini

  • 1Department of Cardiac, Thoracic and Vascular Sciences, University of Padua Medical School, Via Giustiniani 2, 35100 Padova, Italy. paola.melacini@unipd.it

European Heart Journal
|June 2, 2010
PubMed

Insights

Hypertrophic cardiomyopathy (HCM) can lead to severe heart failure through various mechanisms. Atrial fibrillation is a common factor, and understanding these profiles aids targeted treatment for better outcomes.

Area of Science:

  • Cardiology
  • Heart Failure Research
  • Genetic Cardiology

Background:

  • Hypertrophic cardiomyopathy (HCM) is a significant cause of heart failure across diverse age groups.
  • Defining severe progressive heart failure and outcomes in large HCM patient cohorts requires further investigation.

Purpose of the Study:

  • To characterize distinct profiles of severe progressive heart failure in patients with hypertrophic cardiomyopathy.
  • To identify the underlying pathophysiological mechanisms and clinical variables associated with advanced heart failure in HCM.

Main Methods:

  • Clinical and morphological features of heart failure were assessed in 293 consecutive HCM patients.
  • Follow-up duration was a median of 6 years, with gross and histopathological analysis in 12 patients.
  • Heart failure profiles were categorized based on left ventricular (LV) function and outflow obstruction.

Main Results:

  • 50 patients (17%) developed severe progressive heart failure, with 18 experiencing death or heart transplantation.
  • Three main heart failure profiles emerged: systolic dysfunction, LV outflow obstruction, and non-obstructive with preserved function.
  • Atrial fibrillation (AF) was associated with heart failure in 64% of patients; non-obstructive cases showed accelerated progression, and myocardial scarring was evident in end-stage patients.

Conclusions:

  • Advanced heart failure in HCM arises from diverse mechanisms, including outflow obstruction and various forms of ventricular dysfunction.
  • Atrial fibrillation is a key variable linked to progressive heart failure in HCM.
  • Recognizing the heterogeneous pathophysiology of heart failure in HCM is crucial for developing targeted management strategies.
Abstract

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