New hemodynamic test for assessment of failing hemodialysis grafts: the saline infusion test
| Autor: | Andrew H. Cragg, Janice R. Kruse, G. Michael Werdick |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Male
medicine.medical_specialty medicine.medical_treatment Hemodynamics Sodium Chloride Revascularization Arteriovenous Shunt Surgical Forearm Blood vessel prosthesis Renal Dialysis Internal medicine Angioplasty medicine Humans Radiology Nuclear Medicine and imaging Infusions Intravenous Saline Polytetrafluoroethylene Aged business.industry Graft Occlusion Vascular medicine.disease Blood Vessel Prosthesis Stenosis medicine.anatomical_structure Cardiology Female Hemodialysis Cardiology and Cardiovascular Medicine business |
| Zdroj: | Journal of vascular and interventional radiology : JVIR. 11(2 Pt 1) |
| ISSN: | 1051-0443 |
| Popis: | PURPOSE To validate the saline infusion test, a new hemodynamic test for assessment of failing hemodialysis access grafts. MATERIALS AND METHODS Over a 12-month period, 31 procedures were performed in 25 patients with synthetic forearm loop grafts for hemodialysis. Pre-and postangioplasty measurements of static graft pressures and infusion pressures were obtained. For the saline infusion test, graft pressure was measured while saline was infused at a rate of 600 mL/min for 10 seconds with arterial inflow occluded. Comparison was made to percent outflow stenosis as determined with pre-and postangioplasty angiograms. RESULTS There was no correlation between either the static intragraft pressure ( r = .085, P = .654) or the normalized pressure ratio ( r = .136, P = .4676) and venous outflow stenosis in the preangioplasty group. When pressure was measured during infusion, a significant Pearson correlation was observed between infusion pressure and percent of angiographic stenosis ( r = .60, P = .0002). All three pressure tests were significantly correlated to the percent stenosis identified after angioplasty. CONCLUSIONS Pressure measured in the graft during the saline infusion test at a standard rate that simulates optimal graft flow correlates with the angiographic degree of stenosis and warrants further investigation as a useful adjunct to the assessment of revascularization results. |
| Databáze: | OpenAIRE |
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