Influence of metoprolol on systolic and diastolic function in children with heart failure.

The aim of this study was to assess the effect ofmetoprolol on cardiac function in children with heart failure. This randomized double-blind placebo controlled clinical trial was performed in children with heart failure due to left ventricle volume overload structural heart disease such as VSD, PDA, AI and MR who referred to pediatric cardiology clinics in sari in 2007. The patients divided into case and control groups.