"The net increase in QT interval caused by grapefruit among healthy volunteers was small, but in the range that, if grapefruit juice were a new drug in development, the results of the present study ...

QT prolongation occurs when the heart muscle takes longer to contract and relax than usual. It can affect heart rhythms and lead to sudden cardiac arrest. The heart is a muscle that contracts and ...

Long QT syndrome is a leading cause of sudden death in young persons, with a prevalence exceeding 1 in 2000. It is characterized by prolongation of the QT interval, aberrant T-wave morphologic ...

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 ...

One of the principal tasks of an oncologist is to determine whether to administer, reduce the dose, or hold chemotherapy on the basis of patient characteristics, organ function, and toxicities. These ...

Editor's note: Find the latest COVID-19 news and guidance in Medscape's Coronavirus Resource Center. COVID-19 infection is associated with a significant increase in the corrected QT interval (QTc) in ...

Drinking large quantities of grapefruit juice may prolong the QT interval, especially in women and those who already have long QT syndrome (LQTS), new research suggests. Investigators at Tel Aviv ...

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 ...

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 ...