Failing hemodialysis arteriovenous fistula and percutaneous treatment: imaging with CT, MRI and digital subtraction angiography.
Cardiovasc Intervent Radiol
; 23(4): 262-5, 2000.
Article
em En
| MEDLINE
| ID: mdl-10960538
ABSTRACT
PURPOSE:
To evaluate failing hemodialysis arteriovenous fistulas with helical CT angiography (CTA), MR angiography (MRA), and digital subtraction angiography (DSA), and to compare the efficacy of the three techniques in detecting the number, location, grade, and extent of stenoses and in assessing the technical results of percutaneous transluminal angioplasty (PTA) and stenting.METHODS:
Thirteen patients with Brescia-Cimino arteriovenous fistula malfunction underwent MRA and CTA of the fistula and, within 1 week, DSA. A total of 11 PTAs were performed; in three cases an MR-compatible stent was placed. DSA served as the gold standard for comparison in all patients. The presence, site, and number of stenoses or occlusions and the technical results of percutaneous procedures were assessed with DSA, CTA, and MRA.RESULTS:
MRA underestimated a single stenosis in one patient; CTA and MRA did not overestimate any stenosis. Significant artifacts related to stent geometry and/or underlying metal were seen in MRA sequences in two cases.CONCLUSIONS:
CT and MRI can provide information regarding the degree of vascular impairment, helping to stratify patients into those who can have PTA (single or multiple stenoses) versus those who require an operative procedure (occlusion). Conventional angiography can be reserved for candidates for percutaneous intervention.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Derivação Arteriovenosa Cirúrgica
/
Tomografia Computadorizada por Raios X
/
Angiografia Digital
/
Diálise Renal
/
Angiografia por Ressonância Magnética
/
Oclusão de Enxerto Vascular
Tipo de estudo:
Diagnostic_studies
/
Observational_studies
Limite:
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Cardiovasc Intervent Radiol
Ano de publicação:
2000
Tipo de documento:
Article
País de afiliação:
Itália