What are the most common causes of stent failure?
The causes of stent failure may include poor location, use of bare metal stents and mechanical fatigue. The rate of success may vary according to equipment and physician; For example, people with great experience in stenting can experience the more positive results of the patient. In some cases, the stent fails from the beginning, when the device cannot be properly placed and other measures need to be taken into account to solve the narrowed artery. It is a strange concern around the heart where blood interruption could cause a heart attack. In the angioplasty procedure, a medical expert can remove the plaque on the artery wall before it inserts a stent that is open open. The stents fail if soft tissue grows over them, narrows the artery again, or when they connect, break or collapse.
One potential cause of Fainávnada stent is iatrogenic, which means it is a doctor's mistake. There may be some damage to the artery walls during the location, which increases the chance of soft tissue growth above the stent. Doctors with more experience with workIn advanced devices, they can be more successful, as well as those who use devices they know well. Stent design problems can also be a factor; For example, some products are difficult to insert, which increases the risk of tissue damage.
Another problem is the design of the stent. Historically, these devices were made of bare metal, which created an excellent matrix for soft tissue growth. Many devices are now designed to slowly secrete drugs over time to block cell clotting and growth. The stents, as they are known, tend to experience a higher success. If there are concerns about stent failure, this type of device can be recommended.
Al mechanic al can be a factor of stent failure. Metals used in medical devices are subjected to extensive testing, but microscopic analysis of unsuccessful stents can show signs of cracks, drinks, bending and fractures. YouThey suggest that some metals may not be suitable for long -term use, as they could disintegrate over time. The stem can cause stent failure, which would expose the patient the risk of serious medical complications if the problem cannot be identified in time. If the failure is associated with obvious metal fatigue, it can be reported to a medical database that allows regulatory authorities to monitor the permanent safety of specific equipment on the market and finally determine whether they should remain for sale.