Table 1 SNPs in cardiac ion channel genes associated with QTc length in healthy Caucasian populations KCNH2 rs1805123 (K897T) and rs3815459 were in moderate LD (D′=−0.60). Haplotype analysis confirmed ...

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 ...

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 ...

Thirty healthy volunteers and ten patients with congenital long QT syndrome participated in a four-day thorough-QT-study. On days one and three, study subjects received no study drugs and underwent ...

Minneapolis, MN - An increased duration of the QTc points to an elevated risk for coronary heart disease (CHD) and cardiovascular disease (CVD) mortality in black and white healthy men and women, ...

Rotterdam, the Netherlands - An abnormally prolonged heart-rate-corrected QT (QTc) interval, compared with a normal one, more than doubled the long-term risk of sudden cardiac death (SCD), independent ...

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 ...

Please provide your email address to receive an email when new articles are posted on . SAN FRANCISCO — Patients who drank 2 L grapefruit juice within several hours had significant corrected QT ...

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 ...