Page 123 - Simplicity is Key in CRT

Supplemental material
Supplementary table 1. Patient groups based on levels of indication for CRT implantation*.
LBBB, left bundle branch block; LOE, level of evidence *Adapted from Epstein et al [7].
ECG markers
Recommendation
(LOE)
QRS morphology
QRS duration
LBBB LBBB Non-LBBB Non-LBBB
≥150ms <150ms ≥150ms <150ms
I IIa IIa IIb
A B B B
Supplementary Figure 1. Receiver operating characteristics curves of QRS morphology, QRS duration and QRS area.
ROC curves are displayed for (A) the primary combined endpoint of LVAD, cardiac transplantation or all-cause mortality, (B) HF hos- pitalization, and (C) Echocardiographic response (LVESV reduction ≥15%). QRS morphology is analysed as a binary parameter. QRS duration and QRS area are analysed as continuous measures. AUC is presented for each ECG parameter.
AUC; area under the curve, HF; heart failure, LVAD, left ventricular assist device, ROC; receiver operating characteristics
123