As more consumer-facing devices add features to measure the heart’s electrical activity, companies are looking for new ways to turn this data into valuable health information. AliveCor, a startup that ...

Plausible explanations for differences in the prognostic impact of prolonged QTc interval among the studies are the occurrence of chance, bias and uncontrolled confounding variables. Chance could have ...

The smartphone-enabled mobile device rapidly determines the heart’s rate-corrected QT interval, or QTc — a measurement used to evaluate the health of the heart’s electrical recharging system. Patients ...

ROTTERDAM, the NETHERLANDS — A new analysis of participants in a population-based cohort study suggests at least two ECGs might be useful to stratify individuals at risk for sudden cardiac death (SCD) ...

Dr. Steve Hammill answers the question: 'What Is Long QT Sydrome?' — -- Question: What is long QT syndrome, and for how should it be treated? Answer :So long QT syndrome is a problem that has ...

Uncertainty remains regarding the value of heart-rate-corrected QT interval (QTc) prolongation on electrocardiogram for predicting cardiovascular disease (CVD), particularly among Asian populations.

Long QT interval is a condition that affects the heart’s electrical rhythm, which can lead to potentially life threatening arrhythmia. Behind the pumping action of the heart is an electrical ...

February 4, 2010 (Washington, DC) — A profoundly simple test that takes advantage of the brief heart-rate acceleration that occurs when one stands up, especially if it's done quickly, could ...

NEW YORK (Reuters Health) - When a measurement made on an electrocardiogram, called the QT interval, is longer than normal, it can indicate an increased risk of cardiac arrest. However, within limits, ...

Researchers have found a more accurate way to tell which children are likely to be among the thousand who suddenly die each year in the United States from genetic heart conditions that cause ...

DEAR MAYO CLINIC: I recently read that long QT syndrome is quite common. What is it, and how is it diagnosed? I have read that fainting may be one sign of the disorder. Can long QT syndrome be treated ...