Key result
Wide spatial QRS-T angle linked to ~40% higher risk of all-cause death.
Why the study?
Does a wide spatial/frontal QRS-T angle predict all-cause and cardiac mortality in various populations?
Population
164,171 individuals from 22 studies across all populations, including general population, suspected coronary…
Comparison
Wide spatial/frontal QRS-T angle vs Narrow/normal QRS-T angle
Design
Meta-analysis
Authors
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May enhance mortality risk stratification; confirms association across populations but leaves open prospective validation.
Meta-Analysis (n=164,171)
Does a wide spatial/frontal QRS-T angle predict all-cause and cardiac mortality in various populations?
Effect estimate: RR 1.40 (95% CI 1.32 to 1.48)
A wide spatial or frontal QRS-T angle is a significant predictor of all-cause and cardiac mortality across various populations.
Zhang et al. (2015) conducted a meta-analysis in All populations (including general, suspected coronary heart disease, or heart failure) (n=164,171). Wide spatial/frontal QRS-T angle was evaluated on All-cause death (for wide spatial QRS-T angle) (RR 1.40, 95% CI 1.32 to 1.48). A wide spatial QRS-T angle was significantly associated with an increased risk of all-cause death (RR 1.40; 95% CI 1.32-1.48) and cardiac death (RR 1.71; 95% CI 1.54-1.90).
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