My concern about stents is more related to in-stent restenosis. we will need more work to see what problems occur with this
Dr Sclafani, I only found information on internet on in-stent restenosis in arteries and have a few questions related to this. Here some quotes I found:
- "Initially, new tissue growing inside the stent consists of healthy cells from the lining of the arterial wall (endothelium). Later, scar tissue may form underneath the new healthy lining. In about 25% of patients, the growth of scar tissue underneath the lining of the artery may be so thick that it can obstruct the blood flow and produce an important blockage. In-stent restenosis is typically seen 3 to 6 months after the procedure; after 12 months have passed uneventfully, it is rare."
=> Would you know if there have been any cases in percutaneous venoplasty so far?
- "Compared with balloon angioplasty alone, where the chance of restenosis is 40%, stents reduce the chance of restenosis to 25%" ?! =>This approx. figure also likely for percutaneous venoplasty?
- "Can in-stent restenosis be prevented? =>Can it?
Prevention of in-stent restenosis starts at the point of stent implantation. The physician’s knowledge of appropriate stent placement is crucial. Drugs and vitamins administered either orally or intravenously have been tested for prevention of restenosis and in-stent restenosis, but have not been consistently shown to be helpful."
- "New Techniques to Prevent Restenosis: Drug-Eluting Stent => Are those applied anywhere already? Guess only in research? Or is this old info that not FDA approved yet?
A breakthrough for the prevention of in-stent restenosis occurred in the form of a new generation of "drug-eluting" stents. These stents carry a special drug on their surface that prevents scar tissue growth in the artery where the stent is placed. Drug-eluting stents are not yet approved by the FDA, and the results of further studies are awaited."
- "How do we treat restenosis? => EFFECTIVE?
Repeat angioplasty or bypass surgery can be used to treat in-stent restenosis. In addition, local intravascular radiation (brachytherapy) can be used after treating in-stent restenosis with angioplasty to prevent reoccurrence."
- "What can patients do to protect themselves? => THAT SOUNDS FEASIBLE
After the procedure, patients should lead a heart-healthy lifestyle that includes a diet low in animal fat, regular exercise, blood pressure control, cessation of smoking, and minimal alcohol consumption. Regularly following-up with a cardiologist and taking medications as prescribed are also important preventive measures."
Maybe too many questions, and maybe they were already answered elsewhere? Then sorry...