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| Study of characteristics of renal blood flow resistance index change after cardiopulmonary bypass in children and adults |
| LIU Hui, FU Yong, CHEN Xiao-mei, DENG Ming-bin, YU Feng-xu, LI Ming-xing |
| Department of Ultrasound, Hospital of Luzhou Medical College, Luzhou Sichuan 646000, China |
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Abstract Objective: To explore the changing characteristics of the renal blood flow resistance index(RI) after cardiopulmonary bypass(CPB) in both children and adults by noninvasive color Doppler flow imaging(CDFI). Methods: All patients with heart disease were divided into two groups according to age, children’s group(n=12) and adult group(n=12). The RI of main renal artery and renal segmental artery in all cases were monitored by the CDFI at the preoperative and postoperative 1 h, 2 h, 4 h, 8 h, 16 h, 24 h. The renal blood urea nitrogen(Urea), uric acid(UA) and creatinine(Crea) were detected at the same time. All data for statistical analysis. Results: In children’s groups, various indicators of renal function at postoperative 8 h, 16 h, 24 h were significantly higher than those at preoperation, the renal function gradually got better after 16 h postoperation. Adult kidney function also showed an increasing trend at postoperative time, but the statistical data had no significant differences. RI values were changed at postoperative time in both groups. RI values at 1 h postoperation was significantly higher than that of other times, then gradually recovered. RI values changed more apparently in children’s groups. Conclusion: RI values at 1 h postoperation was significantly higher than other times. Renal function and renal blood flow RI changed more evident in children than in adults.
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Received: 31 December 2013
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Corresponding Authors:
LI Ming-xing
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2014, Vol. 25 
