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Doctor insights on: What Is A Normal Diameter For The Renal Artery

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What is a normal diameter for the renal artery?

What is a normal diameter for the renal artery?

Variable: The exact diameter is not the issue since many people have small arteries with no problems. The problem usually is in the stenosis i.e. Constricted area. More than 60% stenosis (narrowing) is considered severe. However, severity by itself is not the only reason to do intervention (put a stent) since if the kidney function, bp, potassium are stable with no resistant edema observation only is chosen. ...Read more

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Dr. Austina Cho
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Artery (Definition)

Arteries are defined as blood vessels which carry blood away from the heart (to either the body or lungs). Arteries: higher pressure, thicker walls, stretch (pulse) with each heart contraction & deliver blood to the arterioles which control the flow to individual capillaries. Veins are blood vessels which carry blood from capillaries back to the heart (body to right heart; ...Read more


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What are some symptoms of renal artery disease?

What are some symptoms of renal artery disease?

Severe hypertension: Three major problems with renal artery stenosis: 1: severe difficult to control hypertension , 2: kidney failure ( detected by a blood test) 3: severe heart failure, pulmonary edema, severe shortness of breath. ...Read more

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What is the exact function of the renal artery?

What is the exact function of the renal artery?

Blood to kidneys: The primary job of the renal arteries is to supply blood (oxygen, nutrients) to the kidneys from the heart. They branch directly from the aorta. ...Read more

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How is renal artery disease typically diagnosed?

How is renal artery disease typically diagnosed?

Doppler or angiogram: Presents with hypertension and kidney failure. Non invasive testing can be ultrasond with doppler, ct with contrast. Invasive testing- angiogram. ...Read more

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Are the stents put in for renal artery disease temporary or permanent?

Are the stents put in for renal artery disease temporary or permanent?

Permanent: Arterial stents are meant to be permanent and are rarely ever removed. They can, however, develop restenosis or renarrowing that may require further intervention. ...Read more

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What exactly is renal artery occlusion?

Blockage / narrowing: Of renal artery caused by atherosclerotic plaque or in few instances by fibromuscular dysplasia which occurs mostly in younger women, or from a fibrous obstruction in people with nerofibromatosis. ...Read more

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Please explain what a renal artery doppler is?

Please explain what a renal artery doppler is?

Renal artery Doppler: Doppler ultrasound uses focused sound waves to measure the velocity of blood flowing through the renal artery.If the blood flows more rapidly through the artery it suggests that there is a narrowing in the artery. The focused sound waves can also be used to locate where the artery is narrowed. Because it is an indirect measure of narrowing, it is used as a screening test only. ...Read more

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What patients could require a renal artery ultrasound?

Uncontrolled htn: Ptsd with difficult to control hypertension, looking for renal artery stenosis, and pts with acute renal failure as part of their work up. ...Read more

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What is renal artery stenosis (ras)?

Narrowed artery(ies): Narrowing of one or both renal arteries that lead from the aorta to the kidneys is called renal artery stenosis. Causes are atherosclerosis or fibromuscular dysplasia (fmd). Fmd is a non-inflammatory, nonatherosclerotic process. Both atherosclerosis and fmd cause hypertension and can lead to kidney failure. Imaging should be done to establish the diagnosis. Kidney specialists usually treat this dx. ...Read more

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Can renal artery occlusion be cured?

Can be relieved: Renal artery occlusion, a chronic condition can usually be relieved rather than "cured". Cure usually suggests that problem has completely resolved. Complete occlusion of renal artery would mean non function of kidney and can not be cured. 25% of people have two renal arteries and second artery can maintain function in part of kidney. Optimal treatment is stent placement by x-ray interventionist. ...Read more

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What are the tests for renal artery occlusion?

What are the tests for renal artery occlusion?

Vascular studies: A renal artery doppler, mr angiography, IV contrast angiography, co2 angiography, ct angiography are helpful. Older tests include ace inhibitor challenges, searching for drug mediated creatinine rise. This is not much used. ...Read more

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What are some treatments for blocked renal arteries?

Treat renal stenosis: The treatment of a blocked kidney artery is controversial. The 3 ways would be medications, surgery, or arterial stents. There is evidence that all 3 work equally well, even in severe cases, although there are some cases where surgery or a stent may yield a better outcome. However, the risk of surgery or stents is not small, and therefore, a conservative approach with medicine is often best. ...Read more

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How do you typically diagnose renal artery occlusion?

How do you typically diagnose renal artery occlusion?

See below: The gold standard for detecting renal artery occlusion is a renal angiogram, which is injecting a iodinated dye into the blood vessel and taking images. The dye itself can cause some reversible renal injury, and should be used weighing the risk and benefit. Other rare but serious complication is cholesterol embolii syndrome. Other tests eg ultrasound and MRI may not be conclusive. ...Read more

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Could putting a stent in my renal arteries help my ed?

Could putting a stent in my renal arteries help my ed?

No: No but if you have blockages in your aorta or iliac arteries this can block blood flow to your perineum and cause ed. A ct angiogram or vascular study with a penile-brachial index can help evaluate this. ...Read more

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What is the actual prognosis for renal artery occlusion?

What is the actual prognosis for renal artery occlusion?

Atrophy: If the vessel is truly totally occluded the kidney will shrink or atrophy. As long as the other kidney is ok, you should be too. See a good nephrologist and endovascular suegeon. ...Read more

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What are the common symptoms of a renal artery occlusion?

What are the common symptoms of a renal artery occlusion?

No common symptoms: This problem is most commonly found, without symptoms, during testing for high blood pressure. The common causes are chronic occlusion from atherosclerosis or hyperplasia of the artery. Acute embolic occlusion may result in severe flank pain. This is uncommon. ...Read more

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How common is it for somebody to get renal artery occlusion?

Not so common: Depends on your age, BP level- less than 1% of patients with moderate or gr 2 ( BP more than 160/100) high blood pressure will have renal artery stenosis or blockage. More common in caucasians than african americans.Usually don't have to screen for ras unless patient is on multiple medications , unable to tolerate medicines, severe high BP requiring hospitalization or kidney function is affected. ...Read more

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Are some people more prone to getting renal artery occlusion?

Yes: The most common cause of renal artery stenosis is an obstructing plaque which is due to atherosclerosis. A history of smoking, high cholesterol, high blood pressure and diabetes can cause a blockage to form in these arteries. Another rarer cause is blockage due to thickening within the arterial wall due to inflammation. This tends to occur in women, usually 30-50s, with little or no other risks. ...Read more

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What does it mean if an accessory renal artery can't be stented?

Usually can stent. : Sometimes all you can do is balloon only if vessel too small. ...Read more

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What is the definition or description of: Renal artery occlusion?

What is the definition or description of: Renal artery occlusion?

A blockage: of the renal artery, the main artery supplying the kidney. Can lead to renal damage and hypertension. ...Read more

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I'm having stent procedure to open my renal arteries. How long is the recovery?

I'm having stent procedure to open my renal arteries. How long is the recovery?

Relatively quick: In general your renal arteries 'recover' right away, e.g. If you had renal hypertension due to stenosis it is resolved with the percutaneous revascularization. The recovery is for the groin access: most people stay overnight and restrict (some) activities for 1-2 weeks. A week is usually sufficient. ...Read more

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I've developed renal artery occlusion. What should I be watching out for in the future?

High blood pressure: If your artery to the kidney is completely blocked, there is no reason to restore flow. However, you should be sure that it is completely blocked, rather than a very tight narrowing, which would require treatment. The artery to your second kidney should be monitored to make sure that there is not an issue there. Losing flow to both kidneys would result in kidney failure, and dialysis. ...Read more

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What to do if I had a stent put in my renal arteries in november of this year to open the arteries up?

What to do if I had a stent put in my renal arteries in november of this year to open the arteries up?

Follow-up: You should remain on anti-platelet therapy (aspirin or Clopidigrel) if you are not on another blood thinner. The stent should be checked with duplex (ultrasound) every 6 months to a year. ...Read more