MedicineCardiologySurgeryCardiothoracic SurgerySmall Animal SurgeryCardiac Valve SurgeryMitral RegurgitationMitral Valve DiseasePulmonic Valve DiseaseSurgical Valve ReplacementValvular Heart DiseaseCardiac LesionsClinical Observation NotesValvesValvular CalcificationValvular HemodynamicsValvular Incompetence