Skip to main content

Table 3 Characteristics of responders vs non responders – Phase 2

From: A prospective evaluation of cardiovascular magnetic resonance measures of dyssynchrony in the prediction of response to cardiac resynchronization therapy

  Responders Non-responders P value
N 35 15  
Sex (male/female) 23/12 12/3 0.31
Aetiology 24 DCM 7 DCM 0.14
  11 ICM 8 ICM  
QRS duration (ms) 149 ± 20 141 ± 23 0.27
QRS morphology (LBBB/RBBB/IVCD) 23/1/11 5/3/7 0.04
Number of patients with scar on CMR n(%) 12 (34) 9 (60) 0.11
Scar burden on CMR (% of myocardium) in those patients with scar 22.2 ± 13.0 29.4 ± 8.4 0.17
Volume change SDI (%) 15.2 ± 6.2 8.5 ± 4.5 <0.001
LV lead position    0.20
Lateral 17 4  
Posterolateral 14 8  
Anterior 2 3  
Posterior 2 0  
LV lead in area with >50% transmural scar n (%) 1(3) 7(47) <0.001
  1. Abbreviations: As for Table 1.