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Archives of cardiovascular diseases
Volume 110, n° 11
pages 590-598 (novembre 2017)
Doi : 10.1016/j.acvd.2017.03.005
Received : 16 November 2016 ;  accepted : 23 Mars 2017
Three-dimensional interlead distance predicts response and outcomes after cardiac resynchronization therapy
La distance tridimensionnelle entre les deux sondes ventriculaires prédit la réponse des patients après resynchronisation cardiaque et leur pronostic
 

Figure 1




Figure 1 : 

Method for calculation of direct three-dimensional interlead distance (D0), using the Pythagorean theorem, on two chest radiographs with orthogonal projections. AP: anterior-posterior; D: direct interlead distance (ILD); H: horizontal ILD; L: lateral; V: verticaI ILD.


Figure 2




Figure 2 : 

Direct three-dimensional interlead distance (D0) according to the type of lead (bipolar or quadripolar) and the different left ventricular lead electrodes, in the initial cohort (n =42).


Figure 3




Figure 3 : 

Direct three-dimensional interlead distance (D0) according to the final position of the left ventricular lead in the left anterior oblique and right anterior oblique projections, in the initial cohort (n =42). A: apical; AL: anterior-lateral; B: basal; IL: inferior-lateral; L: lateral; M: median.


Figure 4




Figure 4 : 

Comparison of long-term survival (median follow-up, 420 days) from heart failure hospitalization using Kaplan-Meier analyses, in the merged cohort (n =74), between patients with a direct three-dimensional interlead distance/cardiac silhouette maximum width measured on anterior-posterior X-ray (D0/C) ratio ≥ 0.53 (n =52, 70%) and<0.53 (non-adjusted hazard ratio [HR]).

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