Miracles do happen, after you get too close to death! This video shows the moment a surgeon removes a medieval sword from a man’s chest as his heart beats beside it.
The sword ended up lying between the heart’s pericardium and right phrenic nerve, with the biggest fear of causing cardiac tamponade as blood accumulates in the pericardial cavity, and cessation of breathing as a result of damaged phrenic nerve which supply motor fibers to the diaphragm (important function for respiration). The man’s chest is seen clamped open as the surgeon slowly and delicately removes the sword.
Source- Medical Talks