Part 11/Chapter 61/6-min read

Hemodialysis Access Surveillance, Failure, Central Venous Disease, and Complications

Hemodialysis access surveillance built around function and the patient's overall access life-plan, not around cataloguing every stenosis. The chapter frames monitoring, percutaneous and surgical salvage, central venous obstruction, infection and aneurysmal complications, and steal-syndrome management.

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Planning conference: A practical planning-room conversation: anatomy, device or operative choices, surveillance, complications, and decision boundaries.

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Definition and presentation

Access dysfunction is the clinical failure of an arteriovenous fistula or graft to deliver prescribed hemodialysis, or the development of complications that threaten the circuit, limb, or patient. Malfunction is classified structurally into thrombotic events, nonthrombotic flow-related dysfunction, and infectious complications .

Presenting features of access failure or complication include:

  • Difficult cannulation, prolonged post-dialysis bleeding, or inadequate dialysis delivery.
  • Recurrent circuit thrombosis.
  • Arm or facial swelling, and prominent chest-wall collateral veins.
  • Aneurysmal expansion, threatened overlying skin, or localized pain.
  • Hand ischemia, neuropathy, or distal hypoperfusion.
  • Signs of local or systemic infection.
  • Altered physical examination findings, including changes in pulse, thrill, bruit, or collapse with arm elevation.

Central venous disease presents with recurrent access dysfunction, anatomically discordant swelling, and repeated outflow restenosis. In hemodialysis-related venous thoracic outlet syndrome, extrinsic costoclavicular compression is compounded by high distal access flow . Catheter-dependent patients carry higher all-cause mortality, fatal infection, and cardiovascular event risks compared with fistula users, establishing the maintenance of durable permanent access as a core life-preserving strategy . Earlier access creation before dialysis initiation has also been associated with lower subsequent mortality, supporting timely access planning before catheter dependence becomes prolonged.

Surveillance and screening

Guideline frameworks prioritize clinical monitoring and physical examination over universal technology-based screening . There is insufficient evidence to support routine pre-emptive angioplasty of an asymptomatic stenosis; surveillance with treatment on dysfunction remains the position .

Diagnostic imaging is reserved for when a clinical abnormality dictates a change in management. Ultrasound using 10 to 20 MHz transducers is the first-line modality to characterize inflow and outflow stenoses, pseudoaneurysms, hematomas, intimal hyperplasia, and local infection . Fistulography and digital subtraction angiography are used for patients actively progressing to intervention or when central venous obstruction is suspected. Central venous stenosis tracks directly with prior central venous catheter or pacemaker exposure; disease incidence and severity increase with total catheter count .

Treatment of access dysfunction

Management of dialysis access is integrated into an individualized end-stage kidney disease life-plan that balances immediate circuit salvage with the preservation of future venous options . The decision to intervene is governed by clinical dysfunction rather than isolated anatomical narrowing. Intervention requires more than a narrowed lumen. A stenosis warrants angioplasty only when diameter reduction exceeds 50 percent and is paired with a clinical or physiologic abnormality: access dysfunction, abnormal access flow, rising venous dialysis pressures, or prolonged bleeding after decannulation. A greater than 50 percent stenosis in isolation, without such an abnormality, does not by itself justify intervention.

Decision threshold

Dialysis access management criteria

  1. Observation
    Asymptomatic stenosis without clinical flow dysfunction
    Continued clinical monitoring
  2. Medical therapy
    Post-declotting of a prosthetic graft
    Individualized antiplatelet therapy weighed against bleeding risk
  3. Endovascular
    Symptomatic flow-related stenosis or central venous obstruction
    Angioplasty; stent grafts for prosthetic venous anastomosis
  4. Open or revision
    Aneurysm with skin threat, resistant stenosis, or severe steal
    Surgical revision, banding, or inflow modification
  5. No intervention
    Exhausted upper-extremity options with prohibitive surgical risk
    Tunneled femoral catheter as a palliative bridge
  6. Emergency or infection
    Rupture, severe ischemia, or systemic infection
    Urgent source control, access ligation, or specific thrombectomy
Source · · · · ·

The stepwise logic for access salvage is executed in sequence:

  1. Clinical dysfunction is confirmed to justify intervention over surveillance.
  2. The entire access circuit is defined, including inflow, cannulation zone, and central outflow.
  3. Endovascular thrombectomy is performed for clotted circuits and mandates concurrent treatment of the underlying culprit stenosis to ensure durable patency.
  4. Plain balloon angioplasty serves as the default for flow-related stenoses, reserving drug-coated balloons or stent grafts for specific restenotic or anatomic variants.
  5. Central venous stenosis is treated with angioplasty first, with escalation to sequential stenting for elastic recoil or rapid recurrence.

Specific anatomic and procedural complications

Peripheral access interventions rely on conventional balloon angioplasty principles. Drug-coated balloons have demonstrated varying efficacy; adverse predictors for their success include target lesions greater than 4 cm, tandem stenoses, and the presence of thrombosis . In prosthetic grafts, stent graft exclusion of venous anastomotic stenosis provides higher 6-month treatment-area patency, circuit patency, and freedom from reintervention than balloon angioplasty alone .

Cephalic arch stenosis is prone to recoil and rupture. The use of undersized stent grafts (stent-to-vessel diameter ratio below 1.0) is associated with higher primary patency, fewer reinterventions, and reduced lateral edge stenosis compared with size-apposed stent grafts . For central venous disease, brachiocephalic stenosis occurs more frequently than subclavian stenosis, and intervention decisions require balancing immediate symptom relief against the compromise of future surgical or endovascular options .

Steal syndrome prevention and treatment involve distal revascularization and interval ligation (DRIL), extension techniques, or inflow proximalization, favored in high-risk patients undergoing radiocephalic or distal configurations . Iatrogenic complications, such as tibial arteriovenous fistulas following distal Fogarty balloon passage, demonstrate the hazards of endovascular instrumentation in heavily calcified or diseased arteries .

Cannulation technique directly impacts circuit longevity and infection rates. Rope-ladder cannulation is the preferred standard; buttonhole cannulation increases bacteremia risk without a corresponding improvement in primary patency or reduction in thrombosis . Pre-implantation imaging is a core principle extending across populations, from assessing anatomical variants and adjacent structures in newborn access to planning adult circuits . Furthermore, one-stage versus two-stage brachiobasilic fistula creation demonstrates no statistically significant differences in maturation, hematoma, or wound infection rates .

Areas of controversy

The efficacy of drug-coated balloons in hemodialysis access is genuinely uncertain. The Lutonix AV trial reported improved target-lesion primary patency with drug-coated versus uncoated balloons, 58% versus 46% at 9 months and sustained at 12 months , and the AcoArt Orchid trial reported higher target-lesion primary patency, 91% versus 67% at 6 months and maintained at 12 months , and a 2023 meta-analysis supports their superiority over plain balloons without mortality differences . However, earlier meta-analyses of multiple trials found no significant improvement in 6-month or 1-year primary patency , tying their use to specific lesion and recurrence patterns rather than universal application.

Additionally, while clinical integration and follow-up are conceptually supported by trial safety frameworks , translating target-lesion patency directly into sustained dialysis-unit function lacks uniformly established interval guidelines, making routine clinical abnormality the primary trigger for reassessment.

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