Dialysis is a very important and life-saving procedure. It is performed to replace kidney function in case of renal failure. Wastes and extra fluids in the blood are filtered out during this process. To be able to perform Dialysis, the connection between the patient s bloodstream and the equipment for performing Dialysis (dialyzer) outside the body is established. This connection is created through Dialysis Access Surgery. It is a type of Vascular Surgery which forms the vascular opening for access during Dialysis. Thus, Dialysis Access Surgery is the lifeline for the survival of the patient.

Types of Vascular Access for Dialysis- 
There are three types of Vascular Access for Dialysis: Arteriovenous (AV) Fistula, Arteriovenous (AV) Graft, and Venous Catheter.

  Arteriovenous (AV) fistula is a surgical connection of an artery to a vein. An AV fistula is usually placed in the upper arm or in the forearm. It causes extra blood to flow into vein making it grow large. A larger vein hence provides easy access to blood vessels. An AV fistula is preferred over other methods as it lasts longer than other methods of access and provides a good flow of blood. Moreover, it is less prone to infection and blood clots than other methods. Before an AV Surgery, a Vessel Mapping Test is sometimes performed for assessing the blood vessels most suitable for Dialysis. An AV fistula is performed under local anaesthesia and requires two to three months for maturation before hemodialysis. If it fails to mature, the procedure is repeated.

  Arteriovenous (AV) graft is performed when AV fistula fails to mature. It is hence the second most preferred choice for long-lasting access to vascular tissues for Dialysis. An AV graft is a looped plastic tube which establishes a connection between an artery and a vein. Like AV fistula, AV graft is also performed under local anaesthesia. It is slightly more difficult to maintain than an AV fistula.

  A venous catheter is used for short- term hemodialysis. It is a tube which is inserted into chest, neck, leg, or near groin for vascular access. After exiting the body, the tube splits into two halves. In the case where a renal disease has made quick progression leaving little or no time for the AV fistula or AV graft to mature, a venous catheter is used to establish the required vascular connection. This procedure is also performed under local anaesthesia. It is a tool for emergencies but is not suited for long- term use. It can cause narrow vein due to an infection,
scarring, or blood clot. If long- term venous catheter is used, it is tunnelled under the skin which has fewer problems associated with it and is more comfortable. 

How to Care for a Vascular Access?
  Get checked for infections and other problems before each hemodialysis session;
  Use the operated site for access only for the intended use;
  Always keep the access clean;
  Prevent cutting or bumping the access;
  Check for thrill/ vibration in the access and inform the doctor if any;
  Do not put pressure on the access site;
  Do not put blood pressure cuff around the access arm;
  Do not wear jewellery or tight-fitting garments over the site;
  Do not lift a weight.

Take Away-
Vascular Surgery for Dialysis is performed to provide vascular access for the procedure. AV fistula is the most preferred type followed by an AV graft. A venous catheter is recommended to be used only in case of an emergency when there is not much time left for the other two options to mature.

Vascular Surgery - Can It Help For Dialysis?

Many people know that smoking causes several problems including cancer, heart disease, and respiratory disease. However, there are other diseases occur because of smoking and chewing tobacco. Buerger's Disease is one such disease in which the blood vessels in legs and arms get blocked. This blockage will interfere in blood flow and results in forming blood clots. These clots will affect both legs and
hands.
Buerger's Disease is also known as Thromboangitis Obliterans. It is a type of vasculitis which causes inflammation in the blood vessels including thickening, narrowing, weakening, or scarring.
Buerger's Disease cannot be cured easily. However, by quitting the use of tobacco and smoking, one can limit the symptoms from getting worse. If a person is not able to quit smoking, he/she might end up
suffering from severe tissue damage. One can also even lose toes, fingers, or other parts of the limbs. This is why quitting all type of tobacco or smoking is the only way to treat Buerger's Disease.

What Causes Buerger's Disease?
As discussed earlier, smoking cigarettes or cigars and chewing any form of tobacco is one of the main causes of Buerger's Disease. Still, the exact cause of this disease is unknown, but in most cases of Buerger's Disease, the sufferer has consumed tobacco products. It is an assumption that chemicals present in tobacco, cigarettes, and cigars may affect the lining of blood vessels, causing them to swell. According to experts, the genes in the body may also cause this disease. It is suspected that this disease is caused by an autoimmune response in which the immune system of the body attacks healthy tissues mistakenly. According to this theory, some people are prone to this disease.

Symptoms of Buerger's Disease-
Some of the most common symptoms of Buerger's Disease are:
  Pain in the hands and feet while exercising
  Stiffness due to reduced blood flow
  Pain at Rest
  Skin ulcerations
  Gangrene of the fingers and toes in severe cases
  Numbness, coldness, or tingling of the feet and hand
  Pale, reddish, or blue-tinted hands or feet.

Diagnosis of Buerger s Disease-
There is a set of tests that can diagnose Buerger s disease. Doctors first ask a person about his/her lifestyle, use of tobacco, and symptoms. After seeing a few symptoms, doctors may perform a test to check the blood flow. He may also look for other diseases that cause similar symptoms. Some of the common test to diagnose Buerger s Disease are:


  Allen Test: The Allen test is a blood flow test. In this type of test, patients squeeze their hand into a firm fist, which pushes out blood from hand. The doctor presses the arteries to slow down the
blood flow of the hand. At this stage, the normal color of the skin gets pale. After that, patients open his/her hand and doctors release the pressure from both sides of the wrist one by one. If it takes a longer time to go back to the normal skin color, it may be an indication of Buerger s disease

  Angiogram: It is a type of X-ray that will help to check the blockage of the blood vessels in the legs and arms. In this test, doctor place catheter (thin tube) into an artery to pump the dye. After
that, he takes X-ray images. Doctors may also perform tomography (CT) or MRI scan for clear results.

  Blood Tests: The blood tests will help the doctor to check if there is any other disease that causes the same symptoms as most of the vascular diseases mimics the symptoms of Buerger s
Disease. The doctor may also perform tests to check for diseases like lupus, diabetes, and those that cause blood clots.

Treatment of Buerger' Disease-
Quitting smoking and use of tobacco will help a person to lower the symptoms of this disease. Doctors may also prescribe for pain killers or antibiotics to get rid of the pain in affected areas. If a person finds it difficult to quit smoking, doctors help him/her with the right program and rehabilitation techniques.

Take Away-
Buerger's Disease is one of the rare illness caused by intake of tobacco products, this is why quitting smoking is most important to treat this disease. It is also advisable to consult a doctor as soon as a person identify any of the above symptoms.

All You Need To Know About Peripheral Vascular Injuries!

Vascular disorders are disorders of the vessels in your body that carry either blood or waste products. The vascular system consists of the arteries (that carry blood away from the heart), veins (that carry blood to the heart) and lymph vessels (that carry waste products to be excreted from the body). The various diseases of the vascular or circulatory system are:

Peripheral Artery Disease: Peripheral arteries carry blood to the various organs and tissues in the body. Accumulation of cholesterol and fat in the vessels narrow the pathway for the blood to flow. This can impair blood flow to the tissues in the body and cause complications. Various medications used to lower cholesterol and blood pressure can also be used for peripheral artery disease.
Buerger's Disease: This disease causes obstructions in the veins and arteries in the legs. This can hamper blood supply in the toes and the feet. It causes pain and may require amputation in severe cases. Treatments for this disease include smoking cessation and medications to dilute blood vessels.
Aneurysm: An aneurysm is swelling in the blood vessel walls; it usually occurs in the aorta. The artery walls become fragile and are placed under a lot of stress; this may lead to a sudden rupture of the aortic vessels. This disorder is usually treated by surgical procedures.
Peripheral Venous Disease: Peripheral venous disease is characterized by damage to the valves that allows blood to flow in a single direction. Damaged valves can cause blood to flow backwards and therefore, accumulate. Treatments for this disorder are incorporating certain lifestyle habits such as quitting smoking and alcohol.
Blood clots in the veins: Blood clots may occur in the veins present inside the muscles of the thighs and lower legs which lead to deep vein thrombosis. You may be prescribed anti-coagulants, also known as blood thinners, to treat this disorder.
Causes
People with diseases such diabetes, high blood pressure, or kidney failure can be more likely to have vessel problems. Working with vibrating tools, being in cold temperatures, and smoking can worsen vascular problems. Causes of vascular disorders usually fit into one of 5 groups:

Traumatic, which occur after injury
Compressive, which occur when the pipes flatten
Occlusive, which occur when pipes are blocked
Tumors (growths) or malformations (deformed, tangled pipes), which may or may not be present at birth
Vessel spasms, which occur when abnormal control of vessels causes them to narrow
Symptoms
Symptoms of vascular disorders can include:

Pain
Abnormal color changes in the fingertips
Ulcers or wounds that do not heal
Hand problems when in cold temperatures or locations
Numbness or tingling of the fingertips
Swelling
Cool or cold fingers and/or hands

5 Common Vascular Disorders

Peripheral Artery Disease (PAD) is caused by atherosclerosis or plaque build-up in the leg arteries. Mostly, individuals with PAD have mild or no symptoms. But with the extension of the blockages, individuals may experience disability and pain that restricts free walking. In more severe cases, individuals may develop a risk of losing their limb if the circulation is not improved. 

There are various ways to improve the flow of blood in the leg, especially for individuals with severe PAD. The objectives of improving the blood flow in the limb include improving functional ability, reducing pain, preventing amputation, and providing a better quality of life. 

Symptoms 

Symptoms of Peripheral Artery Disease may include gangrene, claudication or pain in leg muscle while walking, pain at night mainly in the feet and leg, and feet sores.

Bypass Surgery

There are a number of treating methods for PAD. Both invasive and traditional methods are used to treat Peripheral Artery Disease. 

Stenting and Angioplasty are invasive treatment methods. The traditional method includes bypass surgery. The best available treatment method for an individual depends upon various factors such as severity, location of the artery blockage in the leg, general health of the patient, history of any vascular problems, and previous treatments.

Surgical bypass in the leg or Lower Extremity Bypass Surgery is usually the last option for the patients with PAD. This method is used when all the other alternative treatment methods fail or are not suitable for the individual. During the Leg Bypass Surgery, the surgeon forms an alternative channel for blood flow to bypass or avoid the blocked area and restore the direct flow of blood to the lower leg and foot. 

The risks and benefits of the surgery are calculated prior to the surgery. For the best result of the surgery, surgeons try to use the patient s own saphenous vein, from inside the leg, to execute these grafts. Surgeons may also use veins from other leg or arms or use prosthetic or artificial graft, in case the required length of the saphenous vein cannot be achieved. 

The results of artificial and saphenous vein from other limbs are not as effective as the saphenous vein from the same leg. Thus, the availability of an appropriate vein to execute this method is an important consideration that is taken into account before the surgery. 

Takeaway

Leg Bypass Surgery is one of the medical procedures for the treatment of Peripheral Artery Disease. In PAD, the artery of the leg is blocked which can hinder the daily life of the individual. 

The symptoms can be mild or absent but, in the case, where symptoms are severe, and affecting the quality of life of the patient, treatment becomes a necessity. Bypass surgery is the last option used when other alternative methods fail to help the patient. 

Leg Bypass - Know More About It!

Peripheral vascular disease (PVD) is a circulation issue that affects the veins and blood vessels outside of the brain and heart. PVD commonly strikes the veins that supply blood to the arms, legs, and organs situated beneath the stomach. These are the veins that are located away from the heart. They are known as peripheral vessels.

In PVD, the width of the veins get limited. Narrowing is normally created by arteriosclerosis. Arteriosclerosis is a condition where plaque develops inside a vessel. It is additionally called 'solidifying of the arteries'. Plaque acts towards reducing the amount of blood and oxygen that is supplied to the arms and legs. As the plaque development advances, clumps may develop, which may further affect the vessel.

There are two main types of PVDs:

    Functional PVD: This doesn't include physical issues in the veins. It causes accidental side effects. Typically,these fits happen suddenly.
    Organic PVD: This includes changes in the vein structure. This sort of PVD causes irritation, tissue harm, and blockages.

The most well-known reasons for functional PVDs are as follows:

    Emotional stress
    Smoking
    Cold temperatures
    Operating Vibrating machinery

The common causes of such natural PVDs are given below:

    Smoking
    High circulatory strain
    Diabetes
    High cholesterol

The symptoms include the following:

    Cramps
    Achiness
    Fatigue
    Burning

Diagnosis:

PVD can be diagnosed using interventional radiology (IR).

IRis a sub-claim of radiology that gives an image-guided diagnosis, and if required, includes treatment of the organs as well.It has developed as a first-line treatment in the administration of PVD.

Advantages:

IR medications are for the most part less demanding for patients than surgery, since they include no surgical cut.They are less painful and have shorter stays at the hospital. By and large, the patients are discharged on the same day the procedure is done. This mainly includes angioplasty and stenting. The procedure is as follows:

    Utilising imaging for direction, the interventional radiologist puts a catheter through the femoral artery in the crotch to the blocked vein in the legs.
    At that point, the interventional radiologist expands a balloon to open the vein that is blocked.
    Sometimes it is opened with a tiny metallic cylinder called astent.
    This is a treatment that does not require surgery; only a scratch in the skin the extent of a pencil tip.

Alternative measure:

Angioplasty and stenting have totally replaced invasive surgical methods. Early trials have proven IR to be as successful as surgery for some blood vessel and artery impairments. Earlier, extensive clinical experience demonstrated that stenting and angioplasty are favoured as first-line treatments for more procedures all through the body .

Doctors as well as patients who have been through the same, believe that IR is much better for PVD than invasive surgery, since it reduces the risk of infection.

Diagnosing Peripheral Vascular Diseases With Interventional Radiology

In our bodies, the vascular system is composed of vessels. This system is comprised of a complex network of veins and arteries. The arteries transport oxygenated blood away from the heart and spread it throughout our bodies and veins brings the deoxygenated blood (oxygen-poor) back to the heart for purification. Whenever this complicated process gets disturbed, pain, dysfunction of the system, and other complications may occur.

Most common complications among all are:
1. Abdominal Aortic Aneurysm: This condition is when there is a  bulge  formed in the weak area of the largest artery in the abdomen and keeps on increasing with each pressure flow of blood from that artery. This condition weakens the artery further and massive internal bleeding may occur.

2. Carotid Artery Disease - Stroke: This condition arises when the main blood vessels flowing blood to the brain develops a plague caused due to hardening of the arteries (atherosclerosis). The continuous increase of plague can cause a stroke.

3. Peripheral Arterial Disease: This condition occurs when the flow of oxygen-rich blood is insufficient to the lower limbs of the body due to hardening of the arteries in that area. This can cause difficulty in walking, foot ulcers, infections and can even lead to amputation.

The complication of these types are corrected by the vascular surgeon with the process is commonly known as vascular surgery. However, this condition is sometimes medically managed by an innovative, less invasive procedure called Endovascular surgery. 

Vascular Surgery-
Vascular surgery is generally the traditional surgery that corrects the diseases outside of the heart and the brain. This procedure is more invasive as it involves incisions that are surgical in nature. Vascular surgery comprises of the surgery of the aorta, carotid arteries, and other small diametric arteries. This surgery also involves surgery of veins for treating various conditions such as varicose veins and May-Thurner syndrome.

Endovascular Surgery:
However, this type of surgery is an innovative way to treat medical conditions related to the vascular system. For instance, during the procedure of treating the Abdominal Aortic Aneurysm, it involves making a small cut near the hip area and inserting the endovascular graft through the arteries and is positioned inside the aorta, in a catheter, which is a flexible, long, and narrow tube. The endovascular graft is a tube device made up of special fiber and is framed within stainless steel self-expanding stents. The grafts expand and seal off the aneurysm. This stops the internal bleeding the system and the graft remain in the aorta permanently.

This method has a short recovery time, smaller incisions, less discomfort, less stress on the heart and has fewer risks. This surgery is appropriate for the patient who is at high
risk of complications. 

Take Away-
Diseases related to artery and veins are now being treated with various methods such as angiography, stenting, sclerotherapy in various countries. These days vascular surgeons have become proficient with the endovascular surgical methods. Endovascular surgery is durable and less painful and stressful when viewed with the context of vascular surgery. However, the cost of staying longer at the hospitals is somewhat got balanced by the high cost of imaging equipment and other high financial expenses in the endovascular surgery.

Endovascular VS Vascular Surgery - Know The Difference!

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