Volume flow measurement in hemodialysis shunts using time-domain correlation

• Published in: Journal of ultrasound in medicine Vol. 18; no. 3; pp. 177 - 183
• Main Authors: Basseau, F, Grenier, N, Trillaud, H, Douws, C, Saint-Amon, A, de Precigout, V, Combe, C
• Format: Journal Article
• Language: English
• Published: Laurel, MD Am inst Ulrrasound Med 01.03.1999; American Institute of Ultrasound in Medicine
• Subjects: Adolescent; Adult; Aged; Aged, 80 and over; Anesthesia. Intensive care medicine. Transfusions. Cell therapy and gene therapy; Arteriovenous Shunt, Surgical; Biological and medical sciences; Blood Flow Velocity - physiology; Brachial Artery - diagnostic imaging; Brachial Artery - physiology; Brachiocephalic Veins - diagnostic imaging; Brachiocephalic Veins - physiology; Brachiocephalic Veins - surgery; Catheters, Indwelling; Color image processing; Correlation methods; Emergency and intensive care: renal failure. Dialysis management; Female; Flow measurement; Follow-Up Studies; Grafts; Hemodialyzers; Hemodynamics; Humans; Implants (surgical); Intensive care medicine; Male; Medical sciences; Middle Aged; Renal Dialysis - instrumentation; Reproducibility of Results; ROC Curve; Time domain analysis; Time Factors; Ultrasonic imaging; Ultrasonography, Doppler, Color; Volume measurement; Sonography; Kidney disease; Doppler ultrasound study; Human; Correlation; Urinary system disease; Shunt; Hemodialysis; Flux; Time; Extrarenal dialysis; Chronic; Treatment; Volume; Hemodynamics; Measurement method; Resuscitation
• ISSN: 0278-4297; 1550-9613
• DOI: 10.7863/jum.1999.18.3.177

Volume flow was measured in 58 hemodialysis shunts (32 grafts and 26 radial fistulas) using the color velocity imaging‐quantification method. This method is based on time‐domain correlation for velocity calculation and integration of time‐varying velocity profiles generated by M‐mode sampling. Measurements were made in the brachial artery to estimate radial fistula flow or directly in the grafts. Intraoperator reproducibility was 14.9% for fistulas and 11.6% for grafts. Flow rate was significantly lower in abnormal shunts associated with a functional disorder or a morphologic complication (808 ml/min +/‐ 484) than in shunts associated with no abnormalities (1401 ml/min +/‐ 562). Receiver operating characteristic curves showed that a flow rate of 900 ml/min for fistulas and 1300 ml/min for grafts provided 81% and 79% sensitivity and 79% and 67% specificity, respectively. A functional disorder or a morphologic complication was associated with all fistulas and grafts in which flow rates were lower than 500 ml/min and 800 ml/min, respectively.