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 ...

A recent report from Japan describes a new nomogram of normal QT intervals at various heart rates. Based on automatic measurements of 24 h Holter electrocardiogram recordings in healthy individuals, ...

The QT interval on an electrocardiogram signifies the time required for the heart to repolarize after depolarization. It has long been appreciated that a long QT interval predisposes patients to ...

Department of Molecular Pharmacology & Experimental Therapeutics, Mayo Clinic, Rochester, Minnesota, USA Correspondence to Dr M J Ackerman, Long QT Syndrome Clinic and the Mayo Clinic Windland Smith ...

What is the best way to estimate the QT interval on the ECG? What is the equation for QTc? A good way to estimate if the QT interval prolonged is by checking its relation to the R-R interval. If the ...

A simple electrocardiogram (ECG) can pinpoint hospitalized COVID-19 patients at high risk of death who might need intensive management. That's the finding of a study presented at EHRA 2022, a ...

Boston, MA - Patients who receive high doses of the antidepressants citalopram or escitalopram could potentially develop QT-interval prolongation, a marker of a slight increased risk for ventricular ...

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) ...

Treatment of long QT syndrome (LQTS) aims to prevent sudden cardiac death and similarly fatal abnormal heart rhythms and fainting spells. LQTS is a genetic condition in the majority of cases and ...

What is Long QT Syndrome? Long QT syndrome is a heart condition that causes uncontrolled arrhythmias. It is the most common cause of unexplained deaths and affects approximately 1 in every 2000 ...