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 ...

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 ...

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 ...

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 ...

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 ...

Having access to less intrusive QT interval measurement with flexibility around the time and place of the appointment is important 3.1 Psychiatric service user experts explained that it is important ...

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 ...

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 ...

SAN FRANCISCO — Patients who drank 2 L grapefruit juice within several hours had significant corrected QT interval prolongation, especially in women and those with long QT syndrome, according to data ...

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 ...