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Table 5 Comparison of longitudinal strain in different locations of QRS fragmentation

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

Variables fQRS location P value
Anterior Inferior Lateral
ANTSEPT (%) Base 16.40 ± 3.84 14.40 ± 3.20 14.20 ± 5.49 0.613
Mid 19.40 ± 3.04 17.1 ± 4.58 19.00 ± 3.53 0.515
POST (%) Base 20.0 ± 2.0 18.40 ± 3.06 18.8 ± 2.28 0.558
Mid 21.6 ± 2.7 19.4 ± 2.22 20.4 ± 3.04 0.309
ANT (%) Base 16.6 ± 1.14 17.60 ± 3.13 17.80 ± 4.49 0.809
Mid 22.20 ± 2.16 20.10 ± 4.01 18.60 ± 4.50 0.343
Apex 26.40 ± 2.88 23.30 ± 3.97 22.60 ± 5.63 0.321
INF (%) Base 18.40 ± 1.94 16.50 ± 2.12 17.60 ± 1.51 0.215
Mid 21.80 ± 1.30 19.20 ± 2.78 19.80 ± 2.68 0.189
Apex 24.80 ± 3.7 24.20 ± 2.89 24.20 ± 6.94 0.965
LAT (%) Base 16.40 ± 3.91 19.90 ± 3.81 17.20 ± 3.11 0.758
Mid 17.60 ± 3.78 21.00 ± 3.52 18.60 ± 4.27 0.238
Apex 21.80 ± 4.65 24.80 ± 4.04 22.80 ± 4.38 0.417
SEPT (%) Base 16.40 15.20 ± 2.34 14.60 ± 1.81 0.385
Mid 19.80 ± 2.58 18.40 ± 2.50 18.0 ± 1.87 0.458
Apex 23.20 ± 2.28 23.60 ± 4.03 22.60 ± 3.78 0.127
A3C_GLS (%) 20.68 ± 1.39 18.67 ± 3.35 19.74 ± 3.11 0.462
A2C_GLS (%) 21.84 ± 0.88 20.43 ± 2.42 20.26 ± 1.49 0.366
A4C_GLS (%) 19.20 ± 2.22 20.69 ± 2.74 18.84 ± 2.46 0.360
GLS (%) 20.30 ± 0.51 19.94 ± 2.21 19.60 ± 1.88 0.841
  1. ANTSEPT: anteroseptal; POST: posterior; ANT: anterior; INF: inferior; LAT: lateral; SEPT: septal; A3C_GLS: GLS in apical three-chamber view; A2C_GLS: GLS in apical two-chamber view; A4C_GLS: GLS in apical four-chamber view