Clinical Comparative Analysis of Bretschneider and St. Thomas Cardioplegia Solution in Case of Mitral Valve Repair Via Anterolateral Right Thoracotomy

Inclusion Criteria: * Mitral valve reconstruction via minimal invasive antero- lateral thoracotomy done in cardioplegia with a cardioplegic solution, either HTK-Bretschneider (Custidiol®) (a crystalloid intracellular solution) or St. Thomas (a crystalloid extracellular solution). Exclusion Criteria: * Mitral valve reconstruction via minimal invasive antero- lateral thoracotomy done in cardioplegia with cardioplegic Solutions other than HTK-Bretschneider (Custidiol®) (a crystalloid intracellular solution) or St. Thomas (a crystalloid extracellular solution).