Key result
Abnormal prolongation and shortening of the QT interval are associated with increased mortality risk, but the precise dose-response relationship remains unknown.
Why the study?
Does QT interval variation affect mortality risk and the incidence of ventricular arrhythmias?
Population
General population and patients with hereditary forms of long and short QT syndromes
Design
Review
Authors
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Normal-range QT changes signal higher mortality risk; leaves open whether interventions alter outcomes in general populations.
Does QT interval variation affect mortality risk and the incidence of ventricular arrhythmias?
This review highlights the need for standardized methods to measure QT intervals and precisely assess the associated mortality and arrhythmia risks.
Rezuș et al. (2015) conducted a review in QT interval variations and mortality risk. QT interval variation was evaluated on Mortality risk and cardiovascular disease mortality. Abnormal prolongation and shortening of the QT interval are associated with increased mortality risk, but the precise dose-response relationship remains unknown.
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