Izvorni znanstveni članak
Duplex Sonography of Arteriovenous Fistula in Chronic Hemodialysis Patients
Tonči Mišević
Boris Brkljačić
Lada Zibar
Marko Jakić
Sven Kurbel
Radivoje Radić
Sanja Mišević
Sažetak
Duplex sonography was used to assess functional features of arteriovenous fistula (AVF) for hemodialysis (HD). Internal
diameter (ID), resistance index (RI) and blood flow (BF) velocity in feeding artery and in vein of AVF, and venous
BF volume were analyzed with purpose to determine the normal values. Presumed normal BF velocities are those of clinically
well functioning shunts, allowing BF through HD lines of minimally 250 ml/min. Study included 66 nondiabetic
HD patients (30 women, 36 men), mean age 52±13 years, treated by HD for median 61 (4–252) months. Measurements in
47 patients with clinically well functioning AVF were as followed: mean arterial ID 5.2±1.4 mm, median arterial RI 0.3
(0.3–0.9), median arterial BF velocity 1.5 (0.6–3.6) m/s, mean venous ID 7.6±2.2 mm, median venous RI 0.3 (0.3–0.9),
mean venous BF velocity 1.6±0.7 m/s, and median venous BF volume 530 (120–1890) ml/min. Patients with poor functioning
AVF had significantly less arterial ID, higher arterial RI, less venous ID, less venous BF velocity and volume.
Duplex sonography findings obtained for clinically estimated well functioning shunt should be considered as normal
Doppler values. Blood vessels’ morphologic features depend upon age, and older patients have more pronounced changes.
Ključne riječi
arteriovenous fistula; duplex sonography; blood flow; hemodialysis
Hrčak ID:
27586
URI
Datum izdavanja:
12.5.2006.
Posjeta: 1.182 *