OBJECTIVES: Vascular access (VA) stenoses play a significant role in the morbidity of the haemodialysed population. Classifications for diagnosis, assessment and proposal of treatment strategies can be useful clinical and methodological tools. This review aims to present a comprehensive summary and propose further methodological approaches. DESIGN: A systematic review of the literature, evaluating classifications for dialysis-related VA stenosis. DATA SOURCES: Web of Science, Scopus, PubMed, Google Scholar and the ClinicalTrials.gov registry were searched from inception to 7 December 2024. ELIGIBILITY CRITERIA: All articles containing classifications regarding dialysis VA were eligible, with no restrictions on the study type or language of the full text. DATA EXTRACTION AND SYNTHESIS: Two independent researchers performed the search and initial screening. Four vascular surgeons assessed the included classifications using a modified Buchbinder's critical appraisal tool to evaluate quality. RESULTS: From 4771 screened papers, 59 full-text papers were retrieved and 24 articles contained classifications. Three classifications were dedicated to VA stenosis, all based on the anatomical location of lesions. According to the modified Buchbinder's appraisal, the classifications were assessed as moderate-to-good quality. The literature disposes of immense inconsistency in terms of the definition of significant stenosis indicated for treatment. CONCLUSIONS: VA significant stenosis and its classification is a non-uniformly understood issue with many different criteria and categorisations. This basic methodological problem leads to inconsistent results. We recommend the unification of the criteria and their validation in prospective studies.

• Klíčová slova
• Cardiovascular Disease, Dialysis, End stage renal failure, Vascular medicine, Vascular surgery,
• MeSH
• arteriovenózní zkrat * škodlivé účinky   MeSH
• cévní přístupy * škodlivé účinky   MeSH
• dialýza ledvin * škodlivé účinky   MeSH
• lidé MeSH
• stenóza klasifikace   etiologie   MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• scoping review MeSH

Arteriovenous fistula (AVF) is currently the hemodialysis access with the longest life expectations for the patients. However, even the AVF is at risk for many complications, especially the development of stenosis. The latter can not only lead to inadequate hemodialysis but also lead to AVF thrombosis. Duplex Doppler ultrasonography is a very precise method, in the hands of experienced professionals, for the diagnosis of AVF complications. In this review, we summarize the ultrasound diagnostic criteria of significant stenoses and their indication for procedural therapy.

• Klíčová slova
• arteriovenous fistula, arteriovenous graft, hemodialysis, vascular ultrasonography,
• Publikační typ
• časopisecké články MeSH
• přehledy MeSH

Chronic hemodialysis therapy required regular entry into the patient's blood stream with adequate flow. The use of arteriovenous fistulas and grafts is linked with lower morbidity and mortality than the use of catheters. However, these types of accesses are frequently affected by stenoses, which decrease the flow and lead to both inadequate dialysis and access thrombosis. The idea of duplex Doppler ultrasound surveillance is based on the presumption that in-time diagnosis of an asymptomatic significant stenosis and its treatment prolongs access patency. Details of performed trials are conflicting, and current guidelines do not support ultrasound surveillance. This review article summarizes the trials performed and focuses on the reasons of conflicting results. We stress the need of precise standardized criteria of significant access stenosis and the weakness of the metaanalyses performed.

• Klíčová slova
• Hemodialysis, arteriovenous fistula, arteriovenous graft, hemodialysis vascular access, ultrasonography,
• MeSH
• arteriovenózní zkrat * škodlivé účinky   MeSH
• dialýza ledvin MeSH
• duplexní dopplerovská ultrasonografie MeSH
• lidé MeSH
• okluze cévního štěpu diagnostické zobrazování   etiologie   terapie   MeSH
• průchodnost cév MeSH
• ultrasonografie MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• přehledy MeSH