The Misunderstanding of Coronary Stent
The Misunderstanding of Coronary Stent – Medical Stent Coating – Cheersonic
The heart is the engine of the human body, providing blood and nutrients to various organs of the human body, and our heart itself also needs blood and nutrients, which are provided by the coronary arteries. The popular understanding of coronary heart disease is that the blood vessels supplying the heart are blocked. When the blood vessels are narrowed to a certain extent, it will lead to angina pectoris and decreased activity tolerance. In severe cases, the plaque on the blood vessel wall ruptures and thrombosis occurs, which completely blocks the blood vessels supplying the heart, resulting in acute myocardial infarction, and the heart will immediately stop working normally, resulting in serious consequences such as ventricular fibrillation, cardiac rupture and sudden death.
The popular understanding of stent technology is that the blood vessels supplying the heart are narrowed and blocked, and the stent is used to open it to ensure normal or near-normal blood flow, so that the heart engine can work normally.
Misunderstanding 1: Does the bracket have to be placed?
If the blood vessels supplying the heart are completely blocked, the key to treatment is to quickly clear the blocked blood vessels and restore myocardial blood supply. At present, the best solution to achieve rapid dredging of blood vessels is stent placement.
In many patients with acute myocardial infarction, due to the timely operation, there is basically no clinical sequelae, including no abnormal findings on electrocardiogram and echocardiography.
Therefore, once acute myocardial infarction is diagnosed, time is the heart muscle, and time is life. Don’t delay the best time for rescue because of some unnecessary concerns.
Another point to be made is that before acute myocardial infarction, most patients will have symptoms of angina pectoris, which should be treated as soon as possible to avoid the occurrence of acute myocardial infarction.
Myth 2: Does the stent move in the body?
Clinically, some patients are very worried after the stent is placed. They are afraid that the stent will fall off and shift, and they will not dare to exercise if the stent falls. The answer is definitely not.
This is due to the lack of understanding of the stent placement process. After the stent is placed, the stent reaches the stenosis of the blood vessel and is opened with a balloon. The mesh metal structure of the stent will be firmly embedded in the blood vessel, and the vascular endothelial cells will completely cover the stent over time. The stent and the vascular tissue are completely fused together, so once the stent is placed, it is unlikely to fall off under any strenuous activity.
Myth 3: Can an MRI be done after the heart stent is placed?
Similar questions are not only frequently asked by patients, but sometimes even some medical staff are at a loss. In fact, most of the coronary stents are made of alloy materials, and they have passed the MRI safety test. These patients do not have any problem with 1.5T or 3.0T MRI at any time after the operation, and they do not need to have any concerns.
The bare metal stents used in the early stage have weak magnetic properties. According to the recommendations of the American College of Cardiology, these stents are also safe to perform MRI 6 weeks after surgery, because the stents are already very stable at this time. In short, MRI can be done after cardiac stenting.
Myth 4: After stent placement, long-term medication is not required
Many patients mistakenly believe that once the stent is placed, it can be done once and for all, and all oral drugs are discontinued.
Drug therapy is the basis of all coronary heart disease treatment, regardless of whether stents are placed, drug therapy is indispensable.
Misunderstanding 5: The heart has a stent, should it be static or not?
Studies have shown that early and reasonable exercise can improve cardiopulmonary and muscle function, and significantly improve the rehabilitation effect after cardiac stent surgery, including improving chest pain symptoms, reducing mortality and improving quality of life.
So after coronary stent placement, how to exercise reasonably?
Within 1 month after discharge, it is recommended to mainly walk. After 1 month, aerobic exercises such as Tai Chi, aerobic yoga, radio gymnastics, etc. can be gradually increased according to their own conditions and after the exercise risk assessment.
When exercising, it is necessary to determine the exercise target intensity. The pulse rate of about 60% to 70% of the maximum heart rate (220-age) is the most suitable exercise intensity.
For example, if a person is 50 years old, the pulse rate corresponding to his suitable exercise intensity is: (220-50) × (0.6-0.7) = 102-119 beats/min.
During exercise, if you experience chest pain, dizziness, overwork, shortness of breath, excessive sweating, nausea and vomiting, and irregular pulse, you should stop exercising immediately.
Myth 6: How long can a heart stent be used?
The implanted cardiac stent will exist in the human body permanently and can be used for a long time as long as stenosis and thrombosis no longer occur.
The length of the stent use time mainly depends on its own maintenance after surgery, that is, the control of risk factors.
Myth 7: How long does it take to review after stenting?
Post-stent re-examination is mainly to check whether there are drug side effects, such as statins may cause liver and kidney function damage, anticoagulation drugs may cause bleeding; whether stent thrombosis or restenosis, etc.
Follow-up time: If the patient does not have any discomfort after the operation, go to the Cardiology outpatient clinic to review the routine inspection items in 1 month or 3 months, and perform an angiography review in about 6 to 9 months to check whether the stent has restenosis. Condition.
No matter what the reason, if you have suspicious heart symptoms such as chest pain and chest tightness, you should follow up with your doctor at any time.
Source: Healthy Cardiovascular
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.
Cheersonic is the leading developer and manufacturer of ultrasonic coating systems for applying precise, thin film coatings to protect, strengthen or smooth surfaces on parts and components for the microelectronics/electronics, alternative energy, medical and industrial markets, including specialized glass applications in construction and automotive.