The QT interval is the time from the beginning of the QRS complex (ventricular depolarization) to the end of the T wave (ventricular repolarization). The normal QT interval is controversial and ...

Research confirms that grapefruit juice prolongs the QT interval. This finding has implications for patients taking medications that prolong the QT interval and may have implications for patients with ...

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) ...

LQTS can be inherited or acquired through medications or electrolyte imbalances, with family history being a significant risk factor. While some individuals with LQTS may not experience symptoms, ...

Rotterdam, the Netherlands - An abnormally prolonged heart-rate-corrected QT (QTc) interval, compared with a normal one, more than doubled the long-term risk of sudden cardiac death (SCD), independent ...

SAN FRANCISCO, CA—Consuming a large quantity of grapefruit juice has effects on the QT interval in healthy adults similar to those seen with moxifloxacin, an antibiotic with known QT-prolonging ...

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 ...

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 ...

Less than 1 percent of the population has been diagnosed with Long QT syndrome – a rare heart condition that can cause chaotic, sometimes fatal, heart rhythms. Now, Virginia Tech researchers at the ...

Please provide your email address to receive an email when new articles are posted on . SAN FRANCISCO — Patients who drank 2 L grapefruit juice within several hours had significant corrected QT ...