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Heart. Dec 2000; 84(6): 579–581.
PMCID: PMC1729514
Multisite stimulation for correction of cardiac asynchrony
S CAZEAU, D GRAS, A LAZARUS, P RITTER, and J MUGICA
The Full Text of this article is available as a PDF (117K).
Figure 1
Figure 1  
Simultaneous representation of ECG and Doppler left ventricular diastolic filling flows. The first two complexes show spontaneous rhythm. The left ventricular contraction delay caused by a prolonged PR interval and, perhaps, prolonged QRS duration, is (more ...)
Figure 2
Figure 2  
Left: the atrioventricular delay (AVD) is too short. The E wave is early, which tends to lengthen the ventricular filling duration; however, the A wave is prematurely interrupted by mitral valve closure caused by ventricular systole. Centre: the atrioventricular (more ...)
Figure 3
Figure 3  
The first cycle illustrates the measurement between QRS onset (at the pacing spike) and onset of aortic ejection. With left bundle branch block (second spontaneous QRS), the pre-ejection interval is prolonged. Initiation of dual chamber pacing, which (more ...)
Figure 4
Figure 4  
The mechanical interventricular delay (IVD) = LPEI − RPEI. It can routinely be measured, regardless of the ambient spontaneous or paced rhythm. LPEI, left pre-ejection interval; RPEI, right pre-ejection interval. (more ...)
Figure 5
Figure 5  
With biventricular stimulation, the left ventricle is activated earlier and, if the implant was "successful", the left pre-ejection interval is shorter compared to the interval measured during conventional right ventricular pacing. The atrioventricular (more ...)
Figure 6
Figure 6  
Four chamber apical view of the long axis shortening of the left ventricle. Time-movement evaluation of the contraction of the left lateral wall close to the mitral valve annulus is performed. The longest delay reflecting to the end of lateral wall systolic (more ...)
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