From: Fragmented QRS as an early predictor of left ventricular systolic dysfunction in healthy individuals: a nested case-control study in the era of speckle tracking echocardiography
Fragmentation
P valuea
Anterior (25%)
Lateral (25%)
Inferior (50%)
GLS (%)
20.30 ± 0.51
19.60 ± 1.88
19.94 ± 2.21
0.841
EF (%)
61.40 ± 3.50
56.80 ± 1.78
59.70 ± 3.12
0.071