39
Participants
Start Date
January 31, 2006
Primary Completion Date
December 31, 2012
Study Completion Date
December 31, 2013
Diltiazem
Sustained release formulation titrated to a target dose of 360 mg daily, or a maximum of 5 mg/kg/day in pediatric subjects for the duration of the study period
Placebo
Placebo comparator (double-blind allocation of study medication)
Brigham and Women's Hospital, Boston
Children's Hospital, Boston
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Boston Children's Hospital
OTHER
Brigham and Women's Hospital
OTHER