Dialysis Access

Under the skin

• Arteriovenous (AV) Fistula Creation: The word fistula means connection; hence, arterio (artery) + venous (vein) fistula is a connection between an artery and vein. During the procedure, your surgeon will connect an artery in your arm to a vein in your arm. This creates a small channel of blood flow that can be easily accessible by needles for dialysis. 
  • During the procedure:
    • During the fistula creation procedure, you will either receive general, during which you will be asleep,  or local anaesthesia, during which you are awake but your arm is numb. 
    • A small incision will be made in your arm so your surgeon can access your blood vessels
    • Your surgeon will then connect the selected artery and vein surgically with sutures, then close the incision with stitches
    • Though it will take a few weeks for your surgical site and fistula to fully heal, you can resume normal activities within two weeks as long as you take proper precautions
  • Post-op care:
    • Wash the access site every day and keep it clean and dry
    • Be careful not to bump or injure the access site 
    • Do not place a blood pressure cuff, tight clothing, or jewelry over access site
    • Avoid placing weight on arm with access site 
    • Tell your doctor if you see any infection signs (redness, swelling, pus)
• Arteriovenous Graft Placement: Instead of directly connecting the selected artery and vein, your surgeon will use a graft to connect them; a graft known as an arteriovenous (AV) graft can be placed in the arm to connect an artery and vein using an artificial tube.
  
  • During the procedure:
    • If your veins are too small to for an AV fistula, your surgeon will likely choose to sew a graft in between the vein and artery to connect the two. 
    • During the graft placement procedure, you will either receive general, during which you will be asleep,  or local anaesthesia, during which you are awake but your arm is numb. 
    • A small incision will be made in your arm, then your surgeon will sew the graft into the selected artery
    • The graft will be looped just under the skin, then sewn into the selected vein 
    • During your hemodialysis treatment, needles will be placed into the graft in order to access the blood flowing from the artery to the vein
  • Post-op care: 
    • Your arm should be kept elevated following the procedure until discomfort abates 
    • Only take showers after the graft and incision are healed, but be sure to wash the site gently with warm water and soap each day
    • Be careful not to bump or injure the access site 
    • Do not place a blood pressure cuff, tight clothing, or jewelry over access site
    • Avoid placing weight on arm with access site 
    • Keep the site clean and dry 
    • Tell your doctor if you see any infection signs (redness, swelling, pus) 

Not covered by skin

• Catheter Placement: A venous catheter can be placed in your neck, chest, or leg. Most patients have their catheter placed in the chest and it is usually placed a few weeks before dialysis treatment starts. Catheters are not generally the first choice, as having a tube that hangs out of one's body introduces considerable risk of infection; however, they are used if patients only require dialysis for a short term, or if they need dialysis treatment urgently and their AV Fistula or AV Graft is still healing. 
  • During the procedure:
    • During the catheter placement procedure, you will receive local anaesthesia, during which you are awake but your arm is numb, and a sedative to help you relax. 
    • A small incision will be made in the lower part of your neck, which is usually where the catheter is place. 
    • Through the incision, your surgeon will access your jugular vein with a needle, and thread a small guidewire into the vein, where it will then be passed to the vena cava, a major vein that leads back to the heart
    • Your surgeon will then make a second incision below the first one, and a tunnel will be made beneath your skin, through which the dialysis catheter will be passed through
    • The guidewire is then removed, and your catheter will be in it's final position, coming through the second incision outside of your body 
  • Post-op care:
    • Avoid heavy lifting or exercise
    • The exit site--the second incision where the catheter comes out of--should heal in 4-6 weeks
    • Keep the catheter entry and exit sites clean, dry, and dressed 
    • Do not shower or bathe

After your surgeon performs one of the above procedures and the access is in place, patients can undergo hemodialysis, where the dialysis machine takes blood from the patient’s body and filters out toxins and excess fluid, then returns clean blood back to the body. Depending on your dialysis access, you may require subsequent revisions to ensure that your access is functioning properly for dialysis.