The QT interval is the time from the beginning of the QRS complex, representing ventricular depolarization, to the end of the T wave, resulting from ventricular repolarization. The normal QT interval ...

This is an accelerated junctional rhythm and P wave activity can be seen at the end of the QRS complexes in lead I and lead III. The QT is quite prolonged. This ECG was from a patient with genetic ...

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 ...

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 ...

March 24, 2009 (Munich, Germany and Boston, MA) - Two independent genomewide association studies (GWAS) have identified common variants at 10 gene regions that modulate the QT interval, a measure of ...

Aim To determine factors affecting the QT interval in athletes and find an improved means of QT correction (QTc) Method Data was gathered from the CAYA (Cardiovascular Assessment in Young Athletes) ...