It is wise to have an idea of what are the dangers of heart stents before opting for Angioplasty. Heart stents are tiny pipes made of wire mesh, used to widen the diameter of an artery when there is a risk of heart attack. In case of larger arteries fiber, heart stents are used which are called stent graft.
With age and due to some ailments as high cholesterol and hypertension, arteries tend to narrow down. This occurs due to a substance, called plaque that deposits inside the arteries, restricting blood flow. When adequate amount of blood fails to flow in the heart, the muscle may stop functioning. This condition is called a heart attack.
Heart stents are used as precaution in cases where further narrowing is expected. Angioplasty is the procedure, by which heart stents are introduced in arteries of the heart. A catheter is inserted from an artery in the crotch area. This is led to the heart where dye is passed and then x-rays are taken to determine narrowing due to plaque deposits. Heart stents are placed with a balloon catheter if required during the same procedure.
The procedure is mostly safe but there are a few dangers of heart stents. Whenever a foreign body is introduced in the system there are certain quirks. The defense mechanism fails to acknowledge that heart stents are placed to cure an ailment. The resulting activity leads to over production of tissue that forms lumps around the heart stent, blocking blood flow. This phenomenon is called Restenosis. To prevent restenosis medicated heart stents are used that function to hinder cell growth. These have been proved helpful to some extent.
Another concern forms when the heart stent provides perfect berth for clots to form and stay. If the blockage does not flush through, cardiac arrest is brought on. To deal with this patients with heart stents are put on blood thinning medication. A disadvantage is that healing becomes difficult.
Simpler dangers of heart stents are blood clotting and damage to the tissue where the catheter is inserted. This tends to heal with time. Sometimes the wounds get infected which can be treated with antibiotics.
It is possible that the dye used during the procedure might cause an allergic reaction. Different bodies respond to drugs differently. A renal infection might also follow due to kidney damage because of the dye passed. Heart stent introduced patients are instructed to keep hydrated as this helps to solve the problem. Aside from restenosis and clot blockage other complications rarely prove fatal.