Doctor insights on:
What Is The Difference Between A Dialysis Shunt And A Fistula
Simple answer is that it is a medical technology used primarily to provide an artificial replacement for lost kidney function in people with renal failure. Hemodialysis remove wastes and excess water from the blood by circulating blood outside the body through an external filter, called a dialyzer. Blood and dialysate flow through in opposite directions and the ...Read more
Dialysis shunts.: A shunt is a term for the connection that shunts blood from an artery to a vein, bypassing the microscopic network in the tissues that normally connect them. This allows a high blood flow access for pulling blood from the body to the dialysis filter. A fistula is a shunt that has a direct connection of a native artery and native vein, rather than using an artificial tube to make the connection. ...Read more
Fistula vs shunt: Basically, fistulas are natural occurring, abnormal communications between structures (e.g. Between the trachea & the esophagus or between the bladder & the vagina) & shunts are man made communications between structures (e.g. Between an artery & a vein for dialysis or between a cerebral ventricle & the peritoneal cavity for removing excess cerebrospinal fluid in hydrocephalus). ...Read more
When an artery is connected to a vein, the vein walls thicken and become muscular (due to the new high arterial pressure).
This makes finding the vein easier. More importantly, the large bore needles can be removed and pressure held, with clot forming in the muscular walls, to stop the bleeding. If the veins weren't muscular, putting the needle in and taking it out safely, aren't possible. ...Read more
Why is it that if a dialysis patient has a ruptured fistula and is haemorrhaging, you shouldn't place a torniquet proximal to the haemorrhage?
Hold direct pressure over the leak
try to control without clotting the entire fistula or graft, so that it may be salvaged.
Tourniquet may stop the bleeding if high enough pressure but may clot the fistula and require more extensive repair.
Call 911 and get help and transport. ...Read more
Open or endo: It can be done with tpa (alteplase) (a high-potency medication to dissolve blood clot) and a rotor-rooter device inserted through a needle stick in the access. I tend to make a small incision to remove the clot with a balloon catheter, then do an angioplasty on the area of stenosis (narrowing) which you usually find in the vein or graft. ...Read more
A patient who is on dialysis needs the machine to clean toxins from the blood that the kidneys usually do. The patient's blood needs to get out of the body, through the machine, and back into the body.
A dialysis fistula is made by sewing a vein to an artery. This short-circuits the blood flow and the vein becomes dilated because it experiences arterial pressures. This can be used for access. ...Read more
A fistula: A fistula for dialysis is created by connecting a vein in the arm to an artery and giving it usually 6-8 weeks to mature. A good fistula is anatomically not visible but felt through the thrill and bruit it creates. So you should not be able to know the location of a fistula if it is well done. ...Read more
It is less traumatic: Usually specially-trained nurses or technicians access dialysis fistulas, not physicians. Metal needles are used to help penetrate the skin and the thickened wall of the vein accurately and with minimal trauma. Sometimes blunt needles are used (if a buttonholing technique is being employed). ...Read more
Two methods: There are two methods: mechanical or chemical. Occasionally both methods are used. In general, the doctor accesses the av graft or fistula with a needle and places a tube into the graft. He then uses wires and catheters to cross the clot and inject clot busting meds. There are devices he can use that also break up clot. Or, he can open the graft and use special balloons to pull clot out. ...Read more
Fistula first: Check out fistulafirst. Org. Search for buttonhole technique. ...Read more
On dialysis patient having some problems all fistula are failed and both juglar are block and capd also non working further what I do I m a tech pl?
What is the purpose of a AV fistula for dialysis patients? I can't find anything good on the internet to explain this, please add link if you have one
During dialysis why does the subclavian catheter have darker blood than in patients with a fistula?
For a dialysis, why is the subclavian catheter has darker blood rather than in patient with fistula?
Catheter vs fistula: An a-v fistula (avf) is a connection between an artery and a vein, that's why its called an a, for artery, v, for vein, fistula. Arterial blood has more oxygen, making it redder, than venous blood. A subclavian catheter has both blood tubes in the vein, where there is less oxygenated blood, as it does not have any arterial inflow. That's why it has darker blood than an avf. ...Read more
I am a dialysis patient for 2 yrs. I lift 5 to 10 pds of weights, is it okay for my av fistula. And what can I take to build muscle?
AVF and weights: The answer to your question about lifting weights being ok for your avf is "yes". You need to speak to your renal dietician about what you can eat to build up muscle. Good luck. ...Read more
What are cosmetic surgery options for scarring/bumps after having a dialysis fistula on your arm?
Scar Revision: Scars can sometimes be improved with the following methods: 1) passage of time; 2) protection from sun; 3) dermabrasion or laser resurfacing; 4) steroid injection; 5) silicone topical therapy; 6) cosmetics (for camouflage); 7) surgical revision. The methods taht will work best for you will depend on factors seen during an exam. Hope this helps! ...Read more
Depends on cause: Bumps must be looked at to determine their nature. Cannot answer without seeing and palpating the sites. ...Read more
What cosmetic surgery options are available for scarring/bumps after having a dialysis fistula on your arm?
Plastic surgery: A plastic surgeon would have to exam the area and develop a plan of care. ...Read more
I am dialysis patient. Doing since last 6 years. I had line in my neck n when they remove it got clot. Caz of that my fistula hand is swelled.
Venous Hypertension: The fistula causes increase blood flow through the veins draining the arm. If the veins are blocked or narrowed (both possible because of long term dialysis catheter) the increased pressure causes more fluid to collect in the arm and cause swelling. An interventional radiologist might be able to treat the narrowing with a baloon dilation and stunting. ...Read more
I have an av fistula in the antecubital space of my arm and a peritoneal dialysis catheter, is there a safe way to play paintball?
Would avoid: High impact paintball may cause damage ask your surgeon what they think. ...Read more
Irritation: The skin over the shunt may be itching in reaction to irritation from adhesive from tape or from the topical antiseptic used on clean the shunt prior to use. If there is any redness or signs of irritation, see a dermatologist for topical treatment. ...Read more
Shunts: Can also be arterio venous fistulas that have occurred naturally due to disease or trauma or surgeon made for vascular access for dyalysis. There are other types of shunts and fistulas. Need more specifics to help any further with an answer. ...Read more
A fistula is an abnormal connection between two places. Most commonly, it originates somewhere in the intestine and communicates to another location in the intestine or in the skin. A fistula can develop after abdominal surgery, with inflammatory bowel disease, cancer, anorectal abscess, and ...Read more
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