Table 2.

Echocardiographic LV measurements pre-implant (PRE-CRT) and at post-implant follow-up (POST-CRT)

	PRE-CRT	POST-CRT	P
Ejection fraction (%)	23.6 ± 7.2	39.2 ± 11.9	0.0001
Stroke volume (mL)	51.6 ± 22	53.8 ± 15	NS
End-diastolic volume (mL)	227.8 ± 94	151.7 ± 94	0.0001
End-systolic volume (mL)	176.1 ± 84	101.8 ± 99	0.0001
GLS (%)	−7.7 ± 2.9	−12 ± 3.2	0.0001
SDTTS (ms)	148.7 ± 48.8	145 ± 40.1	NS

GLS, global longitudinal strain; SDTTS, standard deviation of time to peak of transverse strain.