Penetrating cardiac injury is associated with high mortality rates. Profuse bleeding from the cardiac wound and cardiac tamponade are the usual cause of death. We report a 29 -year-old man who attempted suicide by self -inflicting stab wound to the left chest with a knife, causing cardiac tamponade and left ventricular injury. The patient was diagnosed by chest point -of-care ultrasonography in the emergency department and operated successfully in a district hospital without cardiac surgery service.