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 ...

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 ...

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 ...

Please provide your email address to receive an email when new articles are posted on . The QT interval on the ECG is recognized as an independent predictor of cardiac mortality and a sensitive, but ...