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- W4238278095 abstract "Abstract Background: Several studies addressed the association between fragmented QRS (fQRS) on 12-lead EKG and left ventricular (LV) dysfunction in patients with a variety of cardiovascular disorders. We tested such association in healthy individuals.Methods: Out of 500 healthy participants without -overt cardiovascular disease from the Shiraz Heart Study cohort, we identified 20 subjects with fQRS (cases) and 20 peers without fQRS (controls). Global LV longitudinal strain (GLS) was measured by speckle tracking echocardiography in the two groups. Comparison was made between case and control groups by using chi-square or independent sample t-test or ANOVA. Results: Age, gender, ejection fraction, LV volume and dimensions did not differ between the case and the control groups. Overall, 14 subjects out of 40 had reduced GLS (≤20%) and 10 of them (25%) had fQRS. GLS was significantly lower in the group with fQRS than in the control group (19.9±1.8 vs 21.4±1.6; p=0.009).Conclusions: Healthy subjects with fQRS present regional LV systolic dysfunction, assessed by GLS, in the presence of a normal ejection fraction. These data suggest that fQRS may be a promising tool to identify apparently healthy subjects with regional LV systolic dysfunction." @default.
- W4238278095 created "2022-05-12" @default.
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- W4238278095 date "2020-07-27" @default.
- W4238278095 modified "2023-09-29" @default.
- W4238278095 title "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" @default.
- W4238278095 doi "https://doi.org/10.21203/rs.2.20205/v2" @default.
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