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Abstract SUMMARY & CONCLUSIONS There is a consensus regarding the superiority of preservation of the mitral valve apparatus when compared to the conventional resection of the MV apparatus with regards to the clinical outcomes and the LV performance but the effects on the RV are missing. They’re some concerns on preservation techniques; implantation of smaller prostheses, longer operation times and risk of LVOTO. The aim of the study: The aim of this study was to evaluate the outcomes of preservation of the annulo-papillary continuity during MVR. Patients and methods: This research was a two-center non-randomized controlled study that was conducted at The Cardiothoracic Surgery Department at Tanta University Hospitals in Egypt, and The Cardiothoracic Surgery Department at Waikato Hospital in New Zealand. We prospectively recruited patients at Tanta University center in the period between January 2014 and May 2015, and at Waikato Hospital center in the period between May 2015 and July 2017. The inclusion and exclusion criteria were as follows: Inclusion criteria: Patients who had MVR surgeries in both centers electively or at emergency situations, and had either mechanical or tissue prostheses. |