Overview Diltiazem in Jervell and Lange-Nielsen Syndrome Status: COMPLETED Trial end date: 2024-10-23 Target enrollment: Participant gender: Summary This study will test the effect of diltiazem, a calcium channel blocking drug, on the QT interval in patients with Jervell and Lange-Nielsen syndrome. This will be a single IV dose and acute effects (within minutes) will be observed.Phase: PHASE4 Details Lead Sponsor: Vanderbilt University Medical CenterTreatments: Diltiazem