The Working Group on Valvular Diseases of the Croatian Cardiac Society is organizing the 4^th Congress with international participation entitled “CROVALV 2018”, which will be held on June 8^th and 9^th, 2018, at the Sheraton Hotel in Zagreb.

CroValv is a bi-annual Congress, designed not only for cardiologists but also for physicians in different specialties, cardiology residents, cardiac surgeons, anesthesiologists, general practitioners, and for all who are professionally involved in the treatment of valvular diseases.

This year’s congress will cover an array of topics including valvular pathology, with an emphasis on mitral regurgitation in clinical practice, distinction between primary and secondary mitral regurgitation, criteria and treatment options for valve repair or replacement in primary and secondary mitral regurgitation, etc. In last two years, development of new, especially percutaneous interventions has brought new and improved treatment options. The congress aims to present everyday challenges in the approach, diagnosis, and selection of the most optimal way of treating patients with valvular diseases, implementing the latest research findings into clinical practice. In addition to invited lectures by reputable European and American speakers, leading national experts will bring their best.

In this Supplement of the official journal of the Croatian Cardiac Society – Cardiologia Croatica, we published summaries of original works that will be presented at the congress in the form of oral presentations or posters.