Hemodynamic changes in the cephalic vein of patients with hemodialysis arteriovenous fistula
Hemodynamic changes in the cephalic vein of patients with hemodialysis arteriovenous fistula
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DOI：
10.1002/jcu.20307
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发表时间：
2007-03-01
影响因子：
0.9
通讯作者：
Karaman, Ozcan
中科院分区：
文献类型：
--
作者：
Albayrak, Ramazan;Yuksel, Seref;Karaman, Ozcan
目的。通过多普勒超声评价动静脉瘘形成后头静脉的血流动力学变化，并比较放射头瘘和头臂瘘。33名血液透析患者和54名对照组参加了这项研究。头静脉采用7.5 MHz线阵探头进行检查。测量血流频谱参数(阻力指数、搏动指数)、时间平均最大血流速度(TAV)、收缩期峰流速(PSV)、舒张期末期流速(EDV)和血管横截面积(A)。头静脉血流量(CVFV)按TAV×A计算。血液透析患者头静脉的CVFV、PSV、EDV、A、RI和PI分别是对照组的45.5、7.2、6.7、7.7、1.2和1.32倍。头臂患者的CVFV和A均高于头臂患者(1,983±1,199比870±322 ml/min[p<；0.05]和50.3+/-38.9比21.0+/-7.8 mm(2)[p<；0.05]。头臂瘘患者的头静脉横截面积和血流量的增加明显大于放射头瘘患者，但血流速度和波形参数无明显差异。(C)2007年威利期刊公司。
Purpose. To assess via Doppler sonography the hemodynamic changes in the cephalic vein after creation of an arteriovenous fistula, and to compare radiocephalic and brachiocephalic fistulas.Methods. Thirty-three hemodialysis patients and 54 controls were enrolled in the study. The cephalic vein was examined with a 7.5-MHz linear-array transducer. Doppler waveform parameters (resistance index, pulsatility index), time-averaged maximum flow velocity (TAV), peak systolic velocity (PSV), end-diastolic velocity (EDV), and the cross-sectional area of the vessel (A) were measured. Cephalic vein flow volume (CVFV) was calculated as TAV x A.Results. CVFV, PSV, EDV, A, RI, and PI were 45.5, 7.2, 6.7, 7.7, 1.2, and 1.32 times higher, respectively, in the cephalic vein of hemodialysis patients compared with controls. Both CVFV and A were higher in brachiocephalic patients compared with radiocephalic patients (1,983 +/- 1,199 versus 870 +/- 322 ml/min [p < 0.05] and 50.3 +/- 38.9 versus 21.0 +/- 7.8 mm(2) [p < 0.05], respectively).Conclusion. The increase in cross-sectional area and flow volume of the cephalic vein is larger in patients with brachiocephalic fistulas than in those with radiocephalic fistulas; however, flow velocities and waveform parameters are not different. (C) 2007 Wiley Periodicals, Inc.