Continued evaluation on patients following renal transplantation at perioperative and 3-month postoperative period by color Doppler ultrasound / 中国组织工程研究

ABSTRACT

AIM: To assess the applied value of color Doppler ultrasound in continued monitoring the postoperative complications of renal transplantation by observing the renal morphous and related hemodynamic index of patients fore-and-aft three months of renal transplantation. METHODS: The experiment was carried out among 152 patients underwent allograft renal transplantation in Ultrasound Department of Nanfang Hospital from April 2005 to April 2006. With the informed consents, all the patients received pre-operative evaluation and postoperative monitor, emphasizing on the renal morphous, hemodynamic index and complications after renal transplantation in three days, seven days, one month and three months. First, two-dimensional imaging was used to observe the shape of the transplant kidneys and measure length, width, thickness, cortical thickness and pyramid size of kidney. Secondly, color Doppler ultrasound was used to observe the iliac artery of the transplant kidneys and the anastomose of the renal artery as well as segmental artery of kidney. And then, high frequency probe was used to check the interlobar and interlobular artery of kidney. Finally, pulsed Doppler was used to collect spectra and measure the peak systolic velocity (PSV), end-diastolic velocity, resistance index and pulsate index. RESULTS: All 152 patients were involved in the result analysis without any drop. There were 64 cases presented complications with an incidence of 42.11%. Partly of them were found more than two complications.①It included 23 cases with acute rejection, accounting for 15.14%. The resistance index of each renal artery was all more than 0.75, thereinto, 12 cases more than 0.85.②There were 14 cases renal artery stenosis, taking up to 9.22%. All of the PSV were more than 180 cm/s, thereinto, there were 5 cases (35.71%) more than 300 cm/s, 6 cases (42.86%) intercurrent acute rejection.③There were 25 cases hydronephrosis, with the incidence of 16.45%. The size of the transplant kidney was (208.52?42.43) cm3. And 20 cases showed peritransplant fluid collection with the incidence of 13.16% CONCLUSION: Color Doppler ultrasound is a useful tool for early diagnosis of blood perfusion, hemodynamic index and complication after renal transplantation; it also can improve the renal transplantation and patient survival rates successfully.