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 ...

Long QT syndrome (LQTS) is a disease that affects the normal heart rhythm and electrical activity. It may lead to sudden onset and dangerous arrhythmias (irregularities of heart rate and rhythm) which ...

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 ...

For the market, the end of QT came as liquidity conditions in the Treasury and repo markets began to tighten, with funding stress building. While the rate cut was widely expected, off-the-run labor ...

Discover why the Federal Reserve's QT halt matters for investors. Get the latest on balance sheet moves, reserve levels, and ...

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 ...

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 ...