binary restenosis definition

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What is restenosis and how is it treated?

Narrowing again

Heart_stent
Usually an artery that has been dilated or stented, or operated, redevelops plaque or scar and is narrowed= stenosed again . Repeat dilation or surgery has a reasonable chance of correcting the issue.
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Dr. Mark Rasak answered:

What can cause restenosis after angioplasty?

Many

Diabetes
there are techinical causes. if the stent is too small or the lesion wasnt completely covered. complex bifurcation lesions and long lesions are more likely to restenose. using multiple stents and working on stents that have already stenosed before. there are patient related causes .pts that smoke or have diabetes (especially if its poorly controlled) have higher rates of restenoses. high cholest.
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Dr. Michael Korona answered:

How is a renal artery stent restenosis done?

Place new stent

Artery
In old stent. Sometimes need a covered stent. Others just balloon again.
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What is the time of restenosis after angioplasty if drug eluting stents?

See below

Diabetes
The highest risk of restenosis is during the first month after stent placement. The risk of restenosis of drug eluting stents is about 10% vs bare metal stents of about 30%. After one year restenosis is much less common. Risk factors for restenosis include diabetes, small vessels stented, long lesions stented and multiple stents placed.
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Dr. Michael Korona answered:

What is the time of restenosis after angioplasty (with drug eluting stents)?

Can

Blood
Form restenosis at about 9 months so need to be checked. After that they can last several years. Need follow up. Make sure to take your blood thinner.
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If you have a failed plain stents( restenosis) what is the next course of action?

Drug Eluting

Stenting
Nowadays, we utilize drug eluting stents and perform stent in stent angioplasty (stent sandwich); if the lesion is not amenable to that, one can use other means such as rotational atherectomy or cutting balloon angioplasty, or a combination of those with stenting with a drug eluting stent. At times, plain old balloon angioplasty will work as well.
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Dr. Elden Rand answered:

Would an Echocardiogram show restenosis, DES rejection or inflammation of arterie?

No

Heart_stent
Only if restenosis caused enough blood flow restriction to cause a wall motion abnormality on echo. An artery inflammation would be better screened by lab testing. Stents would not typicaly be considered 'rejected'. There would be a certain inflammatory reaction as the stent heals in place and the body covers it with skin. If the stent is not expanded properly, there could be a problem with DES
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What is the rate of restenosis of coronaries comparing drug eluted & plain stents.?

See below

Diabetes_mellitus
The highest risk of restenosis is during the first month after stent placement. The risk of restenosis of drug eluting stents is about 10% vs bare metal stents of about 30%. After one year restenosis is much less common. Risk factors for restenosis include diabetes, small vessels stented, long lesions stented and multiple stents placed.
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Failed plain stents( restenosis), what happens when old stent is removed before applying a?

Not removed

Stenting
very unusual to remove stents unless infected (rare). They may be redilated or a surgical bypass may be needed.
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How does the rate of restenosis of coronary arteries compare with medical therapy over stents?

Not sure

Balloon_angioplasty
I am not sure what is meant here. If there was no stent or balloon angioplasty to begin with, the term "restenosis" is sort of irrelevant here. On the other hand, if one is talking about treating in-instent restenosis with medical therapy; if the patient is asymptomatic, there is no reason to not try medical therapy for a while at least.
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