Department of Thoracic and Cardiovascular Surgery, Pusan National University Hospital, Busan, Republic of Korea.
Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea.
J Vasc Access. 2022 Mar;23(2):286-294. doi: 10.1177/1129729821991756. Epub 2021 Feb 2.
This study aimed to evaluate the correlation between duplex ultrasonography (DUS) and ultrasound dilution (UD) measurement's results and determine the factors affecting the correlation of the measured values among other clinical factors in patients.
This cross-sectional study was conducted from April 2020 to May 2020 and included 60 patients who visited our dialysis centre. The flow of the fistula was measured in the proximal brachial artery using DUS. While dialysis was performed on the same day, the access flow was measured using the UD method. The correlation and agreement between the access flows acquired by each measurement method were analysed. Similarly, the correlation was analysed by classifying the groups based on the predisposing factor, and statistically significant factors were observed through comparison.
Both measurements showed a moderate positive correlation ( = 0.60, < 0.01). The bias (mean of UD-DUS) between the two measurements was about 230 mL/min. When the measurement site of DUS was near the inflow artery and in the same anatomical section, a strong correlation with the measurement value of UD was observed (brachial based fistula: = 0.85, radial based fistula: = 0.87). Similarly, for patients without diabetes and those who regularly underwent access surveillance for the dialysis route, strong correlations were observed between the two measurements ( = 0.79 and = 0.88).
Several factors can influence the correlation between UD and DUS. The findings showed a high correlation for DUS measurement sites within the same anatomical section as the inflow artery, patients without diabetes, and patients undergoing periodic surveillance.
本研究旨在评估双功能超声（DUS）和超声稀释（UD）测量结果之间的相关性，并确定其他临床因素对测量值之间相关性的影响。
这是一项横断面研究，于 2020 年 4 月至 2020 年 5 月进行，共纳入 60 名就诊于我院透析中心的患者。使用 DUS 测量近侧肱动脉处的瘘管血流。当天进行透析时，使用 UD 法测量通路流量。分析两种测量方法获得的通路流量之间的相关性和一致性。同样，根据易患因素对患者进行分组分析相关性，并通过比较观察有统计学意义的因素。
两种测量方法均显示出中度正相关（ = 0.60， < 0.01）。两种测量方法之间的偏差（UD-DUS 的平均值）约为 230 mL/min。当 DUS 的测量部位靠近流入动脉且在同一解剖部位时，与 UD 的测量值具有较强的相关性（肱动脉为瘘： = 0.85，桡动脉为瘘： = 0.87）。同样，对于无糖尿病且定期进行透析通路监测的患者，两种测量方法之间也观察到强相关性（ = 0.79 和 = 0.88）。
多种因素可影响 UD 与 DUS 之间的相关性。研究结果表明，流入动脉同一解剖部位的 DUS 测量部位、无糖尿病患者以及定期接受通路监测的患者之间具有较高的相关性。
