All patients (n=84) | ICM (n=43) | NICM (n=41) | |
Clinical characteristics | |||
Age (mean±SD, in years) | 62±12 | 66±9 | 57±12 |
Female (%) | 37 | 35 | 39 |
Diabetes mellitus (%) | 21 | 28 | 15 |
Hypertension (%) | 40 | 28 | 54 |
Hyperlipidaemia (%) | 42 | 44 | 39 |
Atrial fibrillation* (%) | 29 | 35 | 22 |
NYHA Class III/IV (%) | 90 | 91 | 90 |
ECG pre-CRT | |||
Presence of LBBB (%) | 50 | 40 | 61 |
QRS duration (mean±SD in ms) | 151±24 | 147±23 | 154±24 |
Echo characteristics | |||
EF pre-CRT (mean %±SD) | 23±8 | 21±8 | 26±8 |
EF ≥3 months post CRT (mean %±SD) | 34±14 | 28±13 | 40±13 |
CMR characteristics | |||
LVEF (mean %±SD) | 24±9 | 20±8 | 28±9 |
Total scar % (mean %±SD) | 15±17 | 26±16 | 5±10 |
*Includes permanent, persistent and paroxysmal atrial fibrillation.
EF, ejection fraction;ICM, ischaemic cardiomyopathy;LBBB, left bundle branch block;LVEF, left ventricular ejection fraction;NICM, non-ischaemic cardiomyopathy;NYHA, New York Heart Association;QRS, QRS complex duration in ms.