Measuring mechanical function in the failing heart

Elliot McVeigh

Research output: Contribution to journalArticlepeer-review

Abstract

A common pathology in heart failure is a detrimental change in the mechanics of both contraction and filling. In familial hypertrophic cardiomyopathy, a genetic disease characterized by left ventricular hypertrophy and myofiber disarray, left ventricular diastolic dysfunction is common and contributes to congestive heart failure. In dilated cardiomyopathy, a common correlate to reduced wall thickening and increased chamber volume is an asynchronous activation of the left ventricle due to left bundle branch block. Local measures of the timing and magnitude of myocardial shortening and relaxation can be obtained with magnetic resonance (MR) tissue tagging, MR cine phase contrast, or MR cine displacement encoding. In familial hypertrophic cardiomyopathy, these methods have been shown to quantify the restrictive filling of the ventricle. Characterizing the regions of the failing heart which are activated late has allowed investigators to measure the change in protein expression in those regions compared to normal myocardium. Also, these MR imaging methods have led to a better quantification of the asynchronous activation in dilated cardiomyopathy, which can be used to predict response to resynchronization therapy with pacing.

Original languageEnglish (US)
JournalJournal of Electrocardiology
Volume39
Issue number4 SUPPL.
DOIs
StatePublished - Oct 2006
Externally publishedYes

Keywords

  • Function
  • Heart failure
  • MRI
  • Myocardium
  • Tagging

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

Fingerprint Dive into the research topics of 'Measuring mechanical function in the failing heart'. Together they form a unique fingerprint.

Cite this