肝移植术后彩色多普勒血流动力学研究

目的 探讨肝移植术后肝内血流动力学变化.方法 156例肝移植患者,应用灰阶超声观察移植肝形态、实质回声,彩色多普勒超声观察移植肝动静脉及吻合口血流通畅情况,测量血流动力学参数.结果 肝移植患者术后早期肝实质回声增强.肝移植术后门静脉峰值流速术后第1 d最高,以后渐降低;肝动脉峰值流速在随访期无明显变化;肝动脉阻力指数测值术后第1 d最高,以后则下降(P<0.05).结论 彩色多普勒超声可用于评价肝移植后血流动力学变化.

Changes in hepatic hemodynamics after orthotopic liver transplantation : a research of color Doppler ultrasonography

Objective To analyze the hemodynamic changes with color Doppler flow imaging(CDFI) after liver transplantation. Methods One hundred fifty-six patients with transplanted livers were included. Hepatic morphology and parenehyma was investigated with B-mode ultrasound, and the patency of hepatic anastomosis was assessed with CDFI. Hemodynamic parameters were also measured. Results It showed increased parenchyma echogenicity during the early period after liver transplantation. Hepatic hemodynamies changed as follows: peak systolic velocity of portal vein was high in the first day after operation, and then it progressively decreased; the peak systolic velocity of hepatic artery was not changed during the follow-up period;the resistance index of hepatic artery was a little higher in the first day after liver transplantation, then it decreased ( P<0.05 ). Conclusions CDFI is valuable in evaluating hepatic hemodynamic changes after liver transplantation.