[Right atrial rupture associated with left hemothorax].

A 71-year-old female fell down the stairs, hit the right chest and was admitted to our hospital with right chest pain. Computed tomography revealed cardiac effusion and left hemothorax due to traumatic cardiac injury. She underwent emergency operation. Median sternotomy revealed a lot of clot and no acute bleeding. However, severe bleeding started as soon as the clot was removed. The right atrium was teared by 7 cm at the site parallel to the right coronary artery. While the cardiac injury was covered with the operator's hand, cardiopulmonary bypass was established. The injury was sutured with an aid of the heart positioner to achieve complete hemostasis. Successful repair of rupture of the right atrium was reported.