Stern: types used, side effects and risks.


stent is a metal or plastic tube that is inserted into the locked step so that it is opened.Since its introduction at the end of the 1980s, stents revolutionized the treatment of coronary artery diseases and other diseases in which vessels or passages are hampered.

Practice has become quite common and allowed the invasive minimum processing of the conditions that after the need for the operation.Even so, there are complications associated with the stent and sometimes, when they can not be the best option for all.

This article analyzes the various types of stents used in today’s medicine.It also describes a common procedure and possible risks and side effects of the shipment.

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STAINS is not confused With Shunts .The derivations are similar in design, but are used to connect two previously defective passes.


The first stent was implanted in the heart of the patient in Toulouse, France in 1986. Since then, the use of stents was distributed to other organs, including kidneys, colon and esophagus. They are even allowed recent innovations use stents in the treatment of certain types of glaucoma.

There are different types of stents used to treat various diseases.These include:

  • Stents Coronary : Used to treat coronary artery disease, these stents are used as part of the procedure known as Angioplasty .Nowadays, the overwhelming majority of angiops are associated with a coronary wall.
  • Endovascular Stents : These stents are commonly used to treat extended peripheral artery disease ( with the participation of arteries, in addition to the heart), Cerebrovascular diseases (with the participation of the brain), and stenosis of the renal artery in the renal artery (with the participation of the kidneys). .> These stents are placed inside the urea (a ship that connects the kidney to the bladder ) and can be a long length of 11 inches.
  • PROSTATIC STAINS : Used to turn on the urination on the males using an enlarged prostate these stents Outcome obstacles,Caused when prostatic gland compresses the urethra (pass through which the urine is out of the body).
  • OUTS COLLICS : Used for the treatment of obstacles for the intestines, these stents are often used in people With advanced cancer Tolstone or other causes of intestinal block .
  • GENTS Esophagealele : often Use in people with an advanced profane cancer , these stents preserve the asophagus (test tube) so that a person can swallow soft foods and liquids.
  • PANCREATIC AND BILIS STAINS : Used to drarear BILIS DE Gall and pancreas to the small intestine , these stents are often used,When a biliary stone blocks a bile duct and launches a potentially life-threatening condition, known as Cholant . .
  • stents micro-Bypass : Recent innovations used in people with gentle to moderate glaucoma , these stents are implemented by Micronsurgen to reduce intraocular pressure (pressure inside) and the slow progress of the disease.


There are different stents intended for different parts of the body. However, the goal of all stents is to keep the passage open to restore the flow and normal function.


The types of procedures used for the implantation of the stent also vary according to the stents themselves. The base of technology is the design of stent design.It is assumed that with the metals or next-generation coated polymers, the stents are designed to expand after inserting and providing stable forests to prevent the future collapse.

There are several methods that are commonly used to place a stent:

  • coronary or endovascular endovascular : made in regional anesthesia or light sedation, the procedure includes an insertion of a small tube,Called catheter in balloons in Vienna in groin, hand or neck. The catheter protrudes from the stent and feeds on the place of obstacles. After filling the tube, the container is expanding, the balloon turns off and is cleaned, leaving behind the stent.
  • Ureter or prostatic stents : The placement of these stents includes a thin cystoscope tube equipped with a Camera) that is served through the urethra to the obstruction site.A small cable connected to the tip of the fight helps guide the stent to the correct position. Local, regional or general anesthesia can be used .
  • Colonical or esophageal stents : The placement of these stents is similar to the ureter or prostate stents,But it includes a colonoscope (which is inserted in the year to visualize the colon) or the Endoscope (inserted in the mouth to visualize the esophagus). The balloon catheter is generally used to expand narrowed passes. LI> Pancreas or bile walls that place these stents are performed with an endoscope or a percutaneous transhepatic procedure perangography (PTC),In which the needles are inserted through the stomach to place the stent. The follow-up sedation can be used or general anesthesia.
  • Gents Micro-Bypass : The placement of these stents includes a small cut in the cornea / a> Microrurgon fierce eyes . Small stent (approximately a millimetric length and 0.3 millimeters tall) are found in the structure known as the Schlemm channel, which helps adjust the balance of the fluid of the eyes.


Depending on the treatment of the body part, the stent It can be applied surgically through the catheter in Vienna or within the endoscopic procedure.Some procedures require anesthesia or tracking monitoring (Twilight’s dream).

Risks and side effects

As important as stents belong to the treatment of many potentially serious conditions, they have their own limitations and risks.Your doctor should weigh the advantages and risks to determine if you are a candidate for stenting.


One of the complications that the doctor is saving after placing the coronary and endovascular stent

Reslesisis .Rescenosis occurs when the new tissue grows in the treated blood vessel, which has reduced it.While stents significantly reduce the risk of recycling compared to the only angioplasty, complication can still affect some people, generally within 12 months after their procedure.

Naked metal stents developed at the beginning of the 1990s were able to reduce chain risk by approximately half.The new stents accrue new (which are covered with a variety of chemotherapy or immunosuppressants medicines) reduced risk up to 6%.

Another possible complication is late for thrombosis .This occurs when the damage to the container causes the formation of blood clots per year or more after the procedure.To help avoid these potentially serious complications, thrombocyte medications can be assigned, such as plavix (clopidogrel) to suppress clusters.

Less, the coronary stent can also trigger arrhythmia (abnormal heart rhythms) in some people.


Uretal and prostatic stents can sometimes be blocked due to the accumulation of mineral crystals of the urine.Creation can be minimized using stents eluting with covered medications of blood diluents, known as heparin . Heparin can also help reduce the risk of infection.

Many of the side effects are the urinary transition and will be resolved independently without treatment.These include: / P>

  • Frequency of urination (greater need to urinate)
  • Urgency of the urination (feeling that you need to constantly urinate)
  • Leaks of the bladder
  • kidney, bladder,Or the pain of the Paha
  • blood in the urine

Call your doctor if these symptoms are Saved or worst, especially if there is fever, chills or other signs of infection.

Gastrointestinal products

The placement of a colony, esophagus or a Biel stent can lead to tears or random tears, That will lead to pain, bleeding and infection. Some cases can be serious.

(inflammation of the abdominal coating) and (Full infection).The migration of the stent is also possible due to constant intestinal cuts (known as peristalsis ).

Ezophagic stents can also cause chest pain and reflux at reflux (GERD) , it is usually produced within two or four weeks of procedure.

In addition to the drilling, infection and stent migration,The pancreas and bile stents can cause pancreatitis (inflammation of the pancreas) and cholecystitis (Inflammation of the Vesicle Biliary) in many as 24% of cases. The larger naked metal stent, if used. / P>


The use of Micro-Suppass stents was very safe and efficient in people with open glaucoma.Therefore, the placement can cause a short-term increase in intraocular pressure, which leads to the deterioration of vision. This usually occurs within a month of procedure, but is generally non-slip.Many cases are resolved independently without treatment. Infection, while it is possible, rarely.


There are risks associated with the stenting.This includes an obstacle to stent due to the growing garbage or excessive melting locks called the revision. Drilling or breakage of the ship is also possible.


Stanta technology has changed the way many diseases include today, but they are not for everyone.

In some cases, the coronary artery disease can be processed more efficiently by robust surgery to improve the general blood flow that with a posterction than only the bridge of obstruction.In other cases, the procedure may be contraindicated due to the charms of the health status.

Some of the absolute and relative contraindications for stenting include:

  • bleeding disorders, how Hemophilia
  • Blood coagulation disorders,As well as antiphospholipid syndrome
  • hypersensitivity to medications used in the elucidation stents of the preparation
  • Hypersensitivity to drugs,such as plavikas (used to prevent bloody clots) or heparin (used to prevent stent inlay) after placing the stent
  • Ships,that are too small or inflexible for placement or inflation
  • Test of gastrointestinalintestinal and esophagus
  • ascites (accumulation of abdominal fluids) in cases ofPancreas or biliary
  • Claroundt Glaucoma in cases of minibypass stenting


stent is a metal or plastic tube,That is inserted into the blocked passage to keep it open. There are different types of stents used in the heart, blood vessels, urinary tracts, a prostatener, a colon, food, bile ducts and even in the eyes.

Depending on the part of the body, the stent may require an operation or apply through a catheter in Vienna or during an endoscopic procedure.Risks include stent block due to excess growth of tissues or debris, as well as boat perforations.

as important as stents, no, everyone can use them.People with bleeding deterioration and certain drugs may not be candidates.

Word of The Meds information received

STAINS have clear advantages over other more invasive forms of treatment.However, stents should not be considered a light replacement for all medical procedures.

If your doctor is advised against a stent, this is usually because the procedure has limitations and / or is indicated only for short-term use (for example, with biliary stages). If your doctor decides against the structure, ask why try to keep your mind open, if necessary, look for the second opinion of a qualified medical specialist.

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