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Table 4 Comparison of echocardiographic parameters between case and control groups

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

 

fQRS

P value

–

+

ANTSEPT (%)

Base

17.20 ± 2.69

14.85 ± 3.90

0.032

Mid

20.25 ± 3.54

18.15 ± 3.96

0.085

POST (%)

Base

19.45 ± 2.28

18.90 ± 2.61

0.483

Mid

20.80 ± 2.31

20.20 ± 2.59

0.444

ANT (%)

Base

17.10 ± 2.65

17.40 ± 3.07

0.743

Mid

20.35 ± 2.96

20.25 ± 3.82

0.927

Apex

25.60 ± 3.55

23.90 ± 4.27

0.179

INF (%)

Base

19.00 ± 1.78

17.25 ± 2.02

0.006

Mid

21.15 ± 2.08

20.00 ± 2.60

0.131

Apex

25.85 ± 2.70

24.35 ± 4.13

0.182

LAT (%)

Base

18.95 ± 2.67

17.35 ± 3.54

0.115

Mid

20.20 ± 2.61

19.55 ± 3.89

0.538

Apex

24.60 ± 3.91

23.55 ± 4.26

0.422

SEPT (%)

Base

17.15 ± 1.93

15.35 ± 2.06

0.007

Mid

20.80 ± 1.77

18.65 ± 2.37

0.002

Apex

25.90 ± 3.13

23.25 ± 3.46

0.015

A3C_GLS (%)

21.07 ± 2.28

19.44 ± 2.92

0.057

A2C_GLS (%)

21.67 ± 1.95

20.74 ± 1.96

0.143

A4C_GLS (%)

21.44 ± 1.81

19.86 ± 2.58

0.031

GLS (%)

19.94 ± 1.78

21.41 ± 1.59

0.009

  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. Bold values imply statistical significance