The longer a stent is in place, the more cells from the artery's inner lining will have grown over and around the metal struts of the stent, like ivy on a trellis. This tissue helps hold the stent in place. One implanted several years ago should be firmly anchored. Even so, check with your doctor.
Heart is located safely inside the chest cavity which looks like a cage bound by the ribs and breast bone (sternum). The chest cavity is also called as thoracic cavity and it lies between neck and abdomen. Heart lies slightly to the left in the chest cavity. [ 2 ].
The heart is surrounded by the pericardial cavity. The relationship between the heart and the cavity resembles that of a fist pushing into a balloon (Figure 1-11b). The wrist corresponds to the base (attached portion) of the heart, and the balloon corresponds to the serous membrane that lines the pericardial cavity.he pericardium lies within the mediastinum, the portion of the thoracic cavity between the left and right pleural cavities (Figure 1-11d). The connective tissue of the mediastinum surrounds the pericardial cavity and heart, the large arteries and veins attached to the heart, and the thymus, trachea, and esophagus.