The coin from series “Science in Lithuania” is dedicated to cardiac surgery. Lithuania has a long history of heart surgery (cardiac surgery), which should first of all be associated with the Faculty of Medicine, established in 1781 in the old Vilnius University (founded in 1579). Today, Lithuanian cardiologists and cardio surgeons work together to introduce global innovations and further improve heart surgery, a vital medical field. Implementation of new treatment methods provides grounds for deeper understanding of heart diseases and moves effective treatment results, making Lithuania’s contribution to domestic and world medical science even more significant.