What is restenosis?

During balloon angioplasty, which is the procedure performed to open the tapered artery, place an interventional cardiologist in the artery to support it after removal of blocking. Over time, a healthy heart tissue grows around the stent. Sometimes, however, the tissue of the scar also builds around the stent and leads to a new narrowing in the artery. This renewed narrowing is called the reconstruction of the stent in the stent. These include chest pain and shortness of breath during exercise or effort. However, these symptoms do not mean a new heart attack, but narrowing caused by the set tissue scar. Some patients, including diabetics, have no new symptoms at all. If a stent is inserted into the artery, but is not fully extended, more space for scars is left to form between the stent and the artery wall. In this case, the intervention cardiologist can re -insert the catheter, expand the balloon in the artery and use the stent, now expanded to compare the tissue of the scar against the artery wall and alleviate restenosis.

stents Eluting drugs slowly release drugs to reduce the body's ability to create new cells that could lead to the scar. If the stent has been properly placed for the first time, the heart surgeon can replace it with another type of stent with a covered medicine. If an unsuitable or bare stent was used and placed correctly, a new stent could be used. In cases where the accumulation of scar tissue is excessive, the procedure of bypass can be considered.

When new stents are placed, patients must observe the same post -adhesive therapy they used after their first angioplastic procedures. This includes the use of aspirin or prescription drug during healing. These drugs help prevent the formation of blood clots in the new stent when new heart tissue grows around it. Some doctors recommend that patients use low dose aspirin or other medicines for the rest of their lives.

Although the degree of restenosis in the stent may be up to 25 p according to some studiesRocent, when no stent is used, measure is even higher. For this reason, most intervention cardiologists use the stent as a standard practice during angioplasty and then carefully monitor patients. Patients who develop in restenosis usually do so within six months of placing the stent.