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首页> 外文期刊>Journal of nephrology. >Intravascular Doppler technique for monitoring renal venous blood flow in man.
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Intravascular Doppler technique for monitoring renal venous blood flow in man.

机译：血管内多普勒技术监测人的肾静脉血流。

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BACKGROUND: To measure renal blood flow (RBF) from the renal veins in men using the intravascular Doppler technique (IVD). METHODS: In nine hypertensive male patients (age 46-64 years) undergoing diagnostic renal artery angiography and renal vein catheterization to determine plasma renin activity (PRA), a 3F Doppler catheter was positioned in the renal veins using a 7F guide catheter with a "basket" shaped tip. The radiopaque sectors of the catheter, leaning against the vessel wall, serve to measure the internal diameter of renal veins, and therefore to calculate RBF, by multiplying renal vein cross-sectional area by mean blood flow velocity. The resulting RBF from the left and right renal veins were compared with those obtained by the local thermodilution method (TD). RESULTS: We found good agreement (Bland and Altman's method) between the RBF measurements made with IVD (ranging from 46 mL/min to 1,220 mL/min) and with the TD technique (45-1,030 mL/min) (mean bias, 13+/-20 mL/min, 95% CI -54.77 to 28.77 mL/min). In stenotic kidneys a significant correlation was found between the renal vein PRA and RBF calculated with both methods (IVD: r = 0.96, p = 0.002; TD: r = 0.90, p = 0.01). CONCLUSIONS: The IVD technique applied to the venous side of the renal circulation provides a simple and reliable method for separate measurement of RBF in kidneys with and without renal artery stenosis.
机译：背景：使用血管内多普勒技术（IVD）测量男性肾脏静脉的肾血流量（RBF）。方法：在9例接受诊断性肾动脉血管造影和肾静脉插管以确定血浆肾素活性（PRA）的高血压男性患者（年龄46-64岁）中，使用7F导尿管将3F多普勒导尿管定位在肾静脉中，篮子”形的尖端。导管的不透射线部分靠在血管壁上，用于测量肾静脉的内径，从而通过将肾静脉的横截面积乘以平均血流速度来计算RBF。将左肾静脉和右肾静脉产生的RBF与通过局部热稀释法（TD）获得的RBF进行比较。结果：我们发现用IVD（范围从46 mL / min到1,220 mL / min）和TD技术（45-1,030 mL / min）进行的RBF测量（Bland和Altman方法）之间有很好的一致性（平均偏差为13） +/- 20 mL / min，95％CI -54.77至28.77 mL / min）。在狭窄的肾脏中，发现两种方法计算出的肾静脉PRA和RBF之间存在显着相关性（IVD：r = 0.96，p = 0.002; TD：r = 0.90，p = 0.01）。结论：IVD技术应用于肾循环静脉侧，为分离有无肾动脉狭窄的肾脏中的RBF提供了一种简单可靠的方法。

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