150
Participants
Start Date
August 18, 2021
Primary Completion Date
June 30, 2023
Study Completion Date
June 30, 2026
Metoprolol Succinate
Metoprolol Succinate will be in the form of tablets and will be administered orally once daily. The dose will depend on the patient's weight category. Subject should take their treatment at a consistent time each day to promote compliance. IMP will be up titrated. Every two weeks the patients will be given the higher dose of metoprolol succinate or placebo accordingly to scheme.
Placebo
Placebo will be in the form of identical tablets and will be administered orally once daily.
RECRUITING
University Clinical Centre in Gdańsk, Clinic of Paediatric Cardiology and Congenital Heart Defects, Gdansk
Medical University of Gdansk
OTHER