Fistulogram

When you're on dialysis, your access site is your lifeline — and keeping it open and functional is critical. At Prospero Vascular, we offer fistulogram procedures as part of our comprehensive outpatient dialysis access care. A fistulogram is a minimally invasive, image-guided diagnostic test that allows our vascular specialists to assess, diagnose, and treat access issues before they become major complications.

If you're experiencing problems with your arteriovenous (AV) fistula or graft, a fistulogram may be the most effective and efficient way to identify the problem and resolve it in a single visit.

What Is a Fistulogram?

A fistulogram, also known as an access angiogram, is a specialized imaging test that uses contrast dye and real-time X-ray (fluoroscopy) to evaluate blood flow through your dialysis access. The care team typically performs it when your dialysis center notices reduced blood flow, prolonged bleeding, or other signs that your access site may be narrowed (stenosed), clotted, or otherwise dysfunctional.

At Prospero Vascular, we perform fistulograms on an outpatient basis using local anesthesia and light sedation. In many cases, if we find a problem during the procedure, we can treat it immediately, often with angioplasty, thrombectomy, or stent placement — all in the same visit.

Why Fistulograms Matter for Dialysis Patients

Dialysis patients use their AV fistula or graft multiple times each week. These access sites experience repeated needle punctures and high blood flow rates. As a result, patients may face:

• Stenosis (narrowing of the blood vessel)
  
• Thrombosis (clotting within the access)
  
• Poor maturation (in new fistulas)
  
• Aneurysm formation
  
• Access failure, which can disrupt dialysis and require hospitalization
  

A fistulogram is the gold standard for catching these issues early, ensuring your access site functions properly and reducing the risk of missed dialysis sessions or emergency procedures.

When Is a Fistulogram Needed?

You or your dialysis team might suspect an issue with your AV fistula or graft based on certain symptoms or measurements. Common signs that a fistulogram may be needed include:

• Difficulty with needle placement
  
• Prolonged bleeding after dialysis sessions
  
• A change in the thrill or bruit (the vibration or sound over the access)
  
• Decreased blood flow during dialysis
  
• Swelling in the access arm or hand
  
• Recurring clots or infections
  
• Elevated venous pressures during dialysis
  

Depending on your situation, your nephrologist or dialysis nurse may refer you for a fistulogram based on these clinical signs, or you can self-refer if you're noticing unusual symptoms.

What to Expect During a Fistulogram

At Prospero Vascular, your comfort and safety are our top priorities. The fistulogram procedure is quick, minimally invasive, and typically takes 30 to 60 minutes.

Step 1: Pre-Procedure Evaluation

• Our vascular specialist will review your dialysis history, symptoms, and any prior imaging.
  
• We'll check vital signs and ask about any allergies, especially to iodine or contrast dye.
  
• You’ll receive local anesthesia and mild IV sedation to help you relax.
  

Step 2: Catheter Insertion

• The specialist makes a tiny needle puncture, usually in the arm where your access is located.
  
• Using ultrasound and fluoroscopic guidance, the specialist inserts a thin catheter into your fistula or graft.
  

Step 3: Contrast Injection and Imaging

• Next, the specialist injects a small amount of iodine-based contrast dye to make the blood vessels visible under X-ray.
  
• The real-time imaging helps us observe how blood flows through your access and detect any abnormalities.
  

Step 4: Diagnosis and Treatment (If Needed)

• If we find a narrowing, blockage, or clot, we can often treat it right away:
  
  • Angioplasty: The specialist uses a balloon to widen narrowed areas.
    
  • Thrombectomy: The specialist removes clots using special catheters.
    
  • Stent placement: The specialist inserts a small mesh tube to hold the vessel open.
    

Step 5: Recovery and Discharge

• You’ll rest in our recovery area for 1–2 hours for observation.
  
• Most patients go home the same day with minimal restrictions.
  

Benefits of a Fistulogram

In addition, fistulograms offer several key advantages:

• Accurate Diagnosis – Pinpoint exactly where and why your access is malfunctioning.
• Real-Time Imaging – Live X-ray lets us visualize the entire access circuit.
• On-the-Spot Treatment – Our team can resolve many problems during the same visit.
• Avoid Hospitalization – No need for inpatient care or emergency department visits.
• Prevent Access Failure – Early intervention keeps your access functional and reliable.
• Outpatient Setting – Performed in a comfortable, efficient, same-day facility.

When vascular specialists perform a fistulogram in an outpatient setting, it can significantly reduce complications, cost, and inconvenience.

Who Is a Candidate for a Fistulogram?

You may be a good candidate for a fistulogram if you:

• Are currently receiving hemodialysis via an AV fistula or graft
  
• Your dialysis team has told you the access isn’t working well
  
• Are experiencing symptoms of access dysfunction
  
• Have a history of access stenosis or clotting
  
• Need an evaluation for access maturation
  
• Require routine monitoring of a long-standing access
  

Overall, fistulograms are generally safe for most patients, including those with chronic conditions such as diabetes, hypertension, and heart disease.

Risks and Safety

In an accredited outpatient center like Prospero Vascular, fistulograms are very safe and low-risk. However, as with any medical procedure, there are some potential risks, including:

• Allergic reaction to contrast dye
  
• Bleeding or bruising at the puncture site
  
• Infection (rare)
  
• Temporary discomfort or swelling
  
• Kidney strain from contrast dye (especially in patients with residual kidney function)
  

We take every precaution to minimize these risks, including using the lowest dose of contrast possible, careful sterile technique, and advanced imaging technology. If you have a known allergy or compromised kidney function, we’ll adjust the protocol accordingly.

Long-Term Dialysis Access Management

At Prospero Vascular, we don’t just perform procedures — we partner with you and your nephrology team for long-term access management. Fistulograms are part of a broader strategy to ensure:

• Consistent dialysis sessions
  
• Reduced risk of catheter use
  
• Longer lifespan of your access
  
• Lower rates of hospitalization and infection
  

In addition, we track your results, provide follow-up care, and work closely with your dialysis center to monitor your access over time

FAQs About Fistulograms

Schedule a Fistulogram Today

Your dialysis access is too important to leave to chance. If you’ve noticed a change in your access site — or your dialysis team has concerns — a fistulogram can provide the answers and solutions you need.

At Prospero Vascular, we combine compassionate care with advanced vascular imaging and interventional techniques to keep your access functioning at its best. Same-day evaluations and treatments mean you’ll spend less time worrying and more time healing.

Call us today to schedule your outpatient fistulogram or request a referral from your dialysis provider.