Echocardiographic parameters of ventricular dyssynchrony validation in patients with heart failure using sequential biventricular pacing

Pierre Bordachar, Stephane Lafitte, Sylvain Reuter, Prashanthan Sanders, Pierre Jaïs, Michel Haïssaguerre, Raymond Roudaut, Stephane Garrigue, Jacques Clementy

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223 Citations (Scopus)


We sought to evaluate the relationship between hemodynamic and ventricular dyssynchrony parameters in patients undergoing simultaneous and sequential biventricular pacing (BVP). Various echocardiographic parameters of ventricular dyssynchrony have been proposed to screen and optimize BVP therapy. Forty-one patients with heart failure undergoing BVP implantation were studied. Echocardiography coupled with tissue tracking and pulsed Doppler tissue imaging (DTI) was performed before and after BVP implantation and after three months of optimized BVP. Indexes of inter- or intraventricular dyssynchrony were correlated with hemodynamic changes during simultaneous and sequential BVP (10 intervals of right ventricular [RV] or left ventricular [LV] pre-excitation). Variations in intra-LV delay peak, intra-LV delay onset, and index of LV dyssynchrony measured by pulsed DTI were highly correlated with those of cardiac output (r = -0.67, r = -0.64, and r = -0.67, respectively; p < 0.001) and mitral regurgitation (r = 0.68, r = 0.63, and r = 0.68, respectively; p < 0.001), whereas variations in the extent of myocardium displaying delayed longitudinal contraction (r = -0.48 and r = 0.51, respectively; p < 0.05) and the variations in septal-to-posterior wall motion delay (r = -0.41, p < 0.05 and r = 0.24, p = NS, respectively) were less correlated. The changes in interventricular dyssynchrony were not significantly correlated (p = NS). Compared with simultaneous BVP, individually optimized sequential BVP significantly increased cardiac output (p < 0.01), decreased mitral regurgitation (p < 0.05), and improved all parameters of intra-LV dyssynchrony (p < 0.01). At three months, a significant reverse mechanical LV remodeling was observed with significantly decreased LV volumes (p < 0.01) associated with an increased LV ejection fraction (p = 0.035). Specific echocardiographic measurements of ventricular dyssynchrony are highly correlated with hemodynamic changes and may be a useful adjunct in the selection and optimization of BVP. Individually optimized sequential BVP provided a significant early hemodynamic improvement compared with simultaneous BVP.

Original languageEnglish
Pages (from-to)2157-2165
Number of pages9
JournalJournal of the American College of Cardiology
Issue number11
Publication statusPublished or Issued - 7 Dec 2004
Externally publishedYes

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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