Table 2.

Evolution of left ventricular shortening fraction

	Last LV SF before PMI	LV SF at last follow-up	p
Overall	0.41 ± 0.09	0.39 ± 0.11	NS
ICAVB	0.40 ± 0.07	0.37 ± 0.09	NS
CCHD	0.43 ± 0.10	0.39 ± 0.09	NS
ISHD	0.40 ± 0.11	0.41 ± 0.15	NS

CCHD – patients with complex congenital heart disease

ICAVB – patients with isolated congenital complete or advanced AV block

ISHD – patients with isolated structural heart disease

LV SF – left ventricular shortening fraction

NS – not significant

PMI – pacemaker implantation