Should A Heart Stent Be Placed?

Should A Heart Stent Be Placed – Ultrasonic Stent Coating Systems – Cheersonic

Cardiac stent surgery is one of the three major medical treatments for coronary heart disease. However, controversy over the procedure has continued in recent years. It is widely circulated on the Internet that hospital doctors put a lot of heart stents that should not be placed in order to receive rebates for heart stents. So, are heart stents good or bad? Should I put stents for cardiovascular disease?

Cardiac stent “cure the symptoms but not the root cause”?

Cardiac stent, also known as coronary stent, is a commonly used medical device in cardiac interventional surgery, which has the function of dredging arterial blood vessels. When placing the stent, it is necessary to use balloon pressure to expand the blood vessel, squeeze the cholesterol and necrotic cells accumulated in the blood vessel to the blood vessel wall, and sandwich it between the stent and the intima of the blood vessel, so as to open the blood vessel, The effect of dredging blood flow. Therefore, the cardiac stent just flattens the plaque and squeezes it out, but does not remove it, and does not solve the problem of arteriosclerosis from the root. Therefore, it is also called “palliative therapy” in medicine, which is a way to relieve emergencies. Especially for patients with acute myocardial infarction, cardiac stents are an important means of saving lives.

After the stent is placed, the balloon may damage the intima of the blood vessel and proliferate, which may lead to restenosis of the blood vessel. In addition, stents can still cause vascular inflammation, lead to platelet aggregation, and possibly even stent thrombosis. We have thought of a lot of measures to prevent this from happening, and they have been very effective. Overall, the incidence of re-blocking of the latest generation of stents is less than 5%, and more than 90% of people will not experience re-blocking.

Who needs a heart stent?

Regarding the indications for the placement of cardiac stents, some experts in the past believed that stents should be placed if the cardiovascular stenosis exceeded 75%, and no stents should be placed if they did not exceed 75%. In fact, not necessarily, because the need for stent placement is not based on the degree of vascular stenosis as a judgment standard.

If there are no symptoms of myocardial ischemia and the plaque is stable, stents may not need to be installed even if the vessel is narrowed by 90%; however, if the scope of the myocardium supplied by the blood vessel is large and there is obvious myocardial ischemia, it means that the plaque is unstable and may rupture at any time. thrombus. In this case, even if the vascular stenosis does not exceed 70%, stenting should be considered. Of course, people who have already suffered a myocardial infarction should receive stent treatment in a timely manner under the advice of a doctor.

Not all patients with coronary artery disease are candidates for stenting.

Some patients with coronary heart disease have complex vascular lesions, such as multiple tortuosity and calcification of multiple coronary arteries, or chronic occlusive disease of blood vessels, combined with diabetes, etc., and may be more suitable for heart bypass surgery.

Since the bracket should be placed and must be placed, some people are either still worried or feel that everything will be fine if they are placed, neither of which is desirable.

Cardiac stent is a foreign body, is it bad for blood vessels?

There are also some problems with stent implantation as a foreign body. First, in-stent restenosis. This is the main problem of bare stents. After the emergence of drug-eluting stents, the restenosis rate is greatly reduced; second, stent thrombosis, which is the main problem of drug-eluting stents, aspirin and clopidogrel (currently commonly used in China) Composed of “dual antibody (antiplatelet)” drug therapy, it is a good way to solve stent thrombosis; third, some operation-related complications during stent implantation, such as coronary dissection tear, acute occlusion and puncture site of hematoma formation, etc., but in an experienced team, the incidence of serious complications does not exceed 1%.

Is it completely safe to put the stand on?

Many patients with acute myocardial infarction think that they have undergone stent surgery, and installing a “stent” means entering a safe. In fact, stent surgery only solves the problem of a small section of blood vessels. If the patient’s high-risk factors such as hypertension, hyperlipidemia, and hyperglycemia still exist , they will continue to cause damage to the lining of blood vessels. Therefore, the postoperative management of “stent” patients is particularly important.

How long will the stand last? Does it need to be replaced?

Generally speaking, cardiac stents do not have a lifespan and do not need to be replaced. Because the stent placed in the coronary artery will be embedded with the blood vessel, after a period of time, the vascular endothelial cells can completely cover the stent and fuse with the stent, so the stent cannot be removed. If you insist on taking medicines, maintain proper maintenance, and have good living habits after installing the stent, and no secondary stenosis or blockage occurs, the stent can be used for a long time.

After placing the bracket, stick to these two points:

Insist on taking medicine

After stent intervention, although the symptoms of coronary heart disease are relieved, risk factors such as hyperlipidemia and hyperglycemia still exist. Therefore, it is necessary to insist on taking medication to control blood sugar, blood lipids, and blood pressure. After surgery, it is necessary to take antiplatelet agglutination drugs as prescribed by the doctor, usually on the basis of taking aspirin, in combination with other anticoagulant drugs for about a year to prevent platelets from clumping on the stent and causing restenosis in the stent. However, the specific time of medication must be prescribed by the doctor. While taking anticoagulant drugs, it is necessary to avoid behaviors that may lead to bleeding, especially those who suffer from gastrointestinal ulcers and other diseases, must pay more attention to avoid causing heavy bleeding.

Keep a good habit

Bad living habits are an important factor that induces coronary heart disease and even myocardial infarction. After installing stents, you should maintain good living habits to avoid secondary stenosis.

The diet should be light, eat less food with high cholesterol, high oil, high salt, and high sugar, to help control the three highs and delay the process of atherosclerosis. You can eat more fresh vegetables, fruits and nuts, but be careful not to eat too much. Resolutely stay away from cigarettes to prevent the toxic substances in tobacco from damaging the vascular endothelium, causing accumulation of cholesterol and platelets, and inducing vascular stenosis.

Moderate exercise, avoiding cold stimuli, and avoiding large mood swings can also help maintain cardiovascular health.

In addition, drinking “three glasses of life-saving water” (100ml before going to bed, 100ml at night, and 200ml after getting up) can also help prevent myocardial infarction.

The ultrasonic drug-eluting stent spray coating system can be applied to the preparation of polymer coating for preventing vascular restenosis on the surface of implantable drug-eluting stent. Compared to conventional two-fluid nozzles, ultrasonic nozzles can spray a more uniform drug coating that completely covers the stent without the orange peel and adhesion to a complex stent. The soft atomized spray adheres well to surfaces and coating morphology characteristics can be adjusted by modifying process parameters. In addition, the stent coating obtained by ultrasonic spray coating technology is thinner than dip-coating. Ultrasonic spray coating technology can precisely control the amount of drug sprayed on the stent, making the control of the spraying more precisely.

The special nozzle for ultrasonic stent with national patent can realize accurate application of medicine, and the fixture specially equipped for stent is convenient for loading and unloading. This device has the characteristics of supporting multiple series and multiple types of stents, high drug utilization, accurate drug delivery, and high uniformity of the stent membrane layer.