Doppler analysis of hemodialysis grafts: resistive index as a predictor of stenosis
| Autor: | M L Cockerill, D E Baird, R A Bankhead, D G Omdal, M F Hansen, L H Hassell, S C Yuill |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
medicine.medical_specialty
medicine.medical_treatment symbols.namesake Arteriovenous Shunt Surgical Predictive Value of Tests Renal Dialysis Internal medicine Radiologic Evaluation Medicine Humans Radiology Nuclear Medicine and imaging Ultrasonography Doppler Duplex Radiological and Ultrasound Technology medicine.diagnostic_test business.industry Graft Occlusion Vascular medicine.disease Resistive index Ultrasonography doppler Blood Vessel Prosthesis Radiography Stenosis Angiography cardiovascular system Cardiology symbols Outflow Radiology Hemodialysis business Doppler effect |
| Zdroj: | Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine. 13(10) |
| ISSN: | 0278-4297 |
| Popis: | A series of six hemodialysis vascular access patients was evaluated with duplex Doppler sonography and angiography to identify Doppler sonographic parameters that are predictors of venous outflow stenosis. This preliminary series indicates that no venous outflow stenosis was present angiographically when the resistive index gradient across the venous anastomosis is less than or equal to zero and a significant venous outflow stenosis (50 to 100%) was present when the resistive index gradient is 0.15 or greater (P = 0.002, r = 0.963). Doppler acquisition of resistive index gradients across regions of venous outflow is a promising, noninvasive means of rapid radiologic evaluation of hemodialysis graft patients, especially when the need for angiography is equivocal. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text