Long QT syndrome
Clinical trials for Long QT syndrome explained in plain language.
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Can a treadmill test predict a Child's heart rate at play?
Knowledge-focused CompletedThis study looks at children and adolescents aged 6 to 16 with inherited arrhythmias, such as long QT syndrome, to see if a controlled exercise test on a treadmill reflects their actual heart rate and activity levels during daily life. Participants will complete a routine exercis…
Matched conditions: LONG QT SYNDROME
Sponsor: Royal Brompton & Harefield NHS Foundation Trust • Aim: Knowledge-focused
Last updated Sep 03, 2026 00:00 UTC
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Can hormones during pregnancy reshape the Heart's electrical beat?
Knowledge-focused CompletedThis study tracks heart rhythm changes in women from late pregnancy to after delivery, comparing healthy women and those with congenital long QT syndrome, a condition that affects the heart's electrical activity. Researchers use ECGs and blood tests to measure how sex hormones li…
Matched conditions: LONG QT SYNDROME
Sponsor: French Cardiology Society • Aim: Knowledge-focused
Last updated Aug 21, 2026 00:00 UTC
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Heart conditions in kids: study reveals impact on daily life and play
Knowledge-focused CompletedThis study looks at how inherited heart rhythm problems (like Long QT Syndrome) and heart muscle diseases (like Hypertrophic Cardiomyopathy) affect the quality of life and physical activity of children aged 6 to 18. Researchers will compare 107 children with these conditions to 1…
Matched conditions: LONG QT SYNDROME
Sponsor: University Hospital, Montpellier • Aim: Knowledge-focused
Last updated Jun 27, 2026 14:00 UTC
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Hormone shield: could progesterone or testosterone guard against Drug-Induced heart risks?
Knowledge-focused CompletedThis study looked at whether taking progesterone (in women) or testosterone (in men) could reduce dangerous changes in heart rhythm caused by certain medications. 73 healthy older adults (postmenopausal women and men 65+) took either the hormone or a placebo, then received a smal…
Matched conditions: LONG QT SYNDROME
Phase 4 • Sponsor: Indiana University • Aim: Knowledge-focused
Last updated Jun 27, 2026 11:02 UTC